PYRAZOLOMORPHINAN DERIVATIVE

Abstract

The present invention provides a compound having a selective opioid δ receptor agonist effect. The present invention provides a pyrazolomorphinan derivative represented by general formula (1) (in the formula, (II) R.sup.1 represents a hydrogen atom, an alkyl group, a cycloalkylmethyl group, or the like, R.sup.2 represents a hydrogen atom or a hydroxy protecting group, R.sup.3 represents a hydroxy group, an alkyl group, a partially unsaturated heterocyclic group, an aryl group, a heteroaryl group, or the like; and R.sup.4 represents a hydrogen atom, an alkyl group, an aralkyl group, a cycloalkyl group, a cycloalkyl alkyl group, a saturated heterocyclic group, an aryl group, a heteroaryl group, or the like). The pyrazolomorphinan derivative can be used as an active ingredient in an analgesic, an antidepressant, an anxiolytic, or the like.

Claims

1. A compound represented by the following general formula (I), a stereoisomer of the compound, a pharmaceutically acceptable salt thereof, or a solvate thereof: ##STR00088## in the formula, ##STR00089## is represented by ##STR00090## R.sup.1 represents a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, a C.sub.2-6 alkenyl group which may have a substituent, or a C.sub.3-10 cycloalkylmethyl group which may have a substituent; R.sup.2 represents a hydrogen atom or a hydroxy protecting group; R.sup.3 represents a hydroxy group, a C.sub.1-6 alkyl group which may have a substituent, a C.sub.3-10 cycloalkyl group which may have a substituent, a saturated heterocyclic group which may have a substituent, a partially unsaturated heterocyclic group which may have a substituent, a C.sub.6-10 aryl group which may have a substituent, or a 5- to 10-membered heteroaryl group which may have a substituent; and R.sup.4 represents a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, a C.sub.1-12 acyl group which may have a substituent, a C.sub.7-12 aralkyl group which may have a substituent, a C.sub.3-10 cycloalkyl group which may have a substituent, a C.sub.3-10 cycloalkyl C.sub.1-6 alkyl group which may have a substituent, a saturated heterocyclic group which may have a substituent, a partially unsaturated heterocyclic group which may have a substituent, a C.sub.6-10 aryl group which may have a substituent, or a 5- to 10-membered heteroaryl group which may have a substituent.

2. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein ##STR00091## is ##STR00092##

3. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein ##STR00093## is ##STR00094##

4. (canceled)

5. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.1 is a methyl group or a cyclopropylmethyl group.

6. (canceled)

7. (canceled)

8. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.3 is a methyl group, a trifluoromethyl group, or a phenyl group.

9. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.3 is a methyl group.

10. (canceled)

11. (canceled)

12. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.4 is a hydrogen atom, a C.sub.1-6 alkyl group, a C.sub.1-6 alkyl group substituted with a hydroxy group, a C.sub.1-6 alkyl group substituted with a C.sub.1-6 alkoxy group, a benzoyl group, a C.sub.3-7 cycloalkyl group, a C.sub.3-7 cycloalkylmethyl group, a phenyl group, an oxazolyl group, a thiazolyl group, a pyrimidinyl group, or a pyridyl group.

13. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.4 is a 2-oxopyridyl group, a tetrahydropyranyl group, a tetrahydrothiopyranyl group, a 1-methylpiperidyl group, or an S-oxide-tetrahydrothiopyranyl group.

14. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.4 is a hydrogen atom, an isopropyl group, a tert-butyl group, a 2-hydroxyethyl group, a benzoyl group, a cyclohexyl group, a cyclopropylmethyl group, a cyclohexylmethyl group, a phenyl group, a 2-thiazolyl group, or a 2-, 3-, or 4-pyridyl group.

15. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.4 is a 2-oxo-4-pyridyl group, a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a 4-tetrahydropyranyl group, a 4-tetrahydrothiopyranyl group, a 1-methylpiperidin-4-yl group, or an S-oxide-tetrahydrothiopyran-4-yl group.

16. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.2 is a hydrogen atom.

17. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein the compound is selected from (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-phenyl -5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 4), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 5), (6R,6aS, 11aR)-14-(cyclopropylmethyl)-9-sopropyl-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2, 1 -f]indazol -6a(7H)-ol (Compound 6), (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-isopropyl-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 7), (6R,6aS,11aR)-9-(tert-butyl)-14-(cydopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 8), (6R,6aS,11aR)-10-(tert-butyl)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 9), (6R,6aS,11aR)-10-benzyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 10), (6R,6aS,11aR)-9-benzyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 10a), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyridin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 11), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyridin-2-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 11a), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyridin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 12), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyridin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 12a), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyrimidin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 13), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyrimidin-2-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 13a), 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-6a-hydroxy-2-methoxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol -10(5H)-yl)pyridin-2(1H)-one (Compound 14), 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-6a-hydroxy-2-methoxy-8-methyl-5,6,6a,7-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol -9(11H)-yl)pyridin-2(1H)-one (Compound 15), (6R,6aS,11aR)-10-cyclohexyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 16), (6R,6aS,11aR)-9-cyclohexyl-14-(cydopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol -6a(7H)-ol (Compound 17), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol -6a(7H)-ol (Compound 18), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1 -f]indazol -6a(7H)-ol (Compound 19), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-phenyl -5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 20), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 21), (6R,6aS,11aR)-14-(cyclopropylmethyl)-9-isopropyl-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 22), (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-isopropyl-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 23), (6R,6aS,11aR)-9-(tert-butyl)-14-(cydopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 24), (6R,6aS,11aR)-10-(tert-butyl)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 25), (6R,6aS,11aR)-10-benzyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 26), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyridin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 27), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyridin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 28), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyrimidin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 29), 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)pyridin-2(1H)-one (Compound 30), 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-5,6,6a,7-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-9(11H)-yl)pyridin-2(1H)-one (Compound 31), (6R,6aS,11aR)-10-cyclohexyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 32), (6R,6aS,11aR)-9-cyclohexyl-14-(cydopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 33), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 34), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 35), ((6R,6aS,11aR)-14-(cydopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)(phenyl)methanone (Compound 36), (6R,6aS,11aR)-9-(cyclohexylmethyl)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 37), (6R,6aS,11aR)-10-(cyclohexylmethyl)-14-(cydopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 38), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 39), (6R,6aS,11aR)-10,14-bis(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 40), (6R,6aS,11aR)-9,14-bis(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 41), (6R,6aS,11aR)-9-(cyclohexylmethyl)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 42), (6R,6aS,11aR)-10-(cyclohexylmethyl)-14-(cydopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 43), (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-(2-hydroxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 44), (6R,6aS,11aR)-10,14-bis(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 45), (6R,6aS,11aR)-9,14-bis(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 46), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyridin-3 -yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 47), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyridin-3-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 48), (6R,6a S,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyridin-3 -yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 49), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(thiazol-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 50), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(thiazol-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 51), (6R,6aS,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 56), (6R,6aS,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 57), (6R,6aS,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 58), (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 59), (6R,6aS,11aR)-2-methoxy-8,14-dimethyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 60), (6R,6aS,11aR)-8,14-dimethyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 61), (6R,6aS,11aR)-10-benzyl-2-methoxy-8,14-dimethyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 65), (6R,6aS,11aR)-9-benzyl-2-methoxy-8,14-dimethyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 65a), (6R,6aS,11aR)-10-benzyl-8,14-dimethyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 66), (6R,6aS,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-6a-hydroxy-9-phenyl-6,6a,7, 7a, 9, 11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol -8(5H)-one (Compound 67), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-9-phenyl -6,6a,7,9,10,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 68), and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-9-isopropyl-6,6a,7,9,10,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 69).

18. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein the compound is selected from (6R,6aS,11aR)-10-cyclopropyl -14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 70), (6R,6aS,11aR)-9-cyclopropyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 71), (6R,6aS,11aR)-10-cyclobutyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 72), (6R,6aS,11aR)-9-cyclobutyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 73), (6R,6aS,11aR)-10-cyclopentyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 74), (6R,6aS,11aR)-9-cyclopentyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho [2,1-f]indazol-6a(7H)-ol (Compound 75), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,10,11 -tetrahydro-6,11a-(epiminoethano)naphtho[2,1 -f]indazol-6a(7H)-ol (Compound 76), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 76), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 77), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-thiopyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 78), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-thiopyran-4-yl)-5,6,9,11 -tetrahydro-6,11a-(epiminoethano)naphtho[2,1 -f]indazol-6a(7H)-ol (Compound 79), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(1-methylpiperidin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 80), (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(1-methylpiperidin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 81), (6R,6aS,11aR)-10-cyclopropyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 82), (6R,6aS,11aR)-9-cyclopropyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 83), (6R,6aS,11aR)-10-cyclobutyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 84), (6R, 6aS,11aR)-9-cyclobutyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 85), (6R,6aS,11aR)-10-cyclopentyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11 -tetrahydro-6,11a-(epiminoethano)naphtho[2,1 -f]indazole-2,6a(7H)-diol (Compound 86), (6R,6aS,11aR)-9-cyclopentyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 87), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 88), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(tetrahydro-2H-thiopyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 89), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-(tetrahydro-2H-thiopyran-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 90), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(1-methylpiperidin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 91), (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-(1-methylpiperidin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 92), (1S,4S)-4-((6R,6aS, 11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)tetrahydro-2H-thiopyran 1-oxide (Compound 93), and (1S,4R)-4-((6R,6aS,11aR)-14-(cydopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)tetrahydro-2H-thiopyran 1-oxide (Compound 94).

19. The compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1, wherein R.sup.2 is a hydroxy protecting group.

20. A pharmaceutical composition comprising the compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1.

21-25. (canceled)

26. A method for treating pain in a mammalian subject, the method comprising administering an effective amount of the compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1 to a subject requiring treatment of pain.

27. A method for treating depression in a mammalian subject, the method comprising administering an effective amount of the compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1 to a subject requiring treatment of depression.

28. A method for treating anxiety in a mammalian subject, the method comprising administering an effective amount of the compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1 to a subject requiring treatment of anxiety.

29. A method for treating dysuria in a mammalian subject, the method comprising administering an effective amount of the compound, the stereoisomer of the compound, the pharmaceutically acceptable salt thereof, or the solvate thereof according to claim 1 to a subject requiring treatment of dysuria.

Description

EXAMPLES

[0235] Next, the present invention will be described in more detail with reference to Reference Examples and Examples, but the present invention is not limited thereto.

[0236] Compounds in Examples and compounds in Reference Examples were named by converting a structural formula drawn using ChemDraw ver. 14 manufactured by Cambridge Software Corporation as an English name by a naming algorithm mounted on the software and then translating the English name into Japanese.

Reference Example 1

Synthesis of (4bR,8aS,9R)-11-(cyclopropylmethyl) methoxy-6-oxo-5,6,7,8,9,10-hexahydro-8aH-9,4b-(epiminoethano)phenanthren-8a-yl acetate (Compound 1)

[0237] ##STR00017##

[0238] (4bR,8aS,9R)-11-(cyclopropylmethyl)-8a-hydroxy-3-methoxy-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-6(7H)-one (Compound 2) (synthesized by a method described in Chemical Biology & Drug Design 2009, 74, 335-342) (1.1 g, 3.2 mmol) was dissolved in acetic anhydride (5 mL), and stirring was performed at 85° C. for 6.5 hours. After the reaction solution was concentrated under reduced pressure, a saturated sodium bicarbonate aqueous solution was added thereto, and extraction was performed with chloroform. After combined organic layers were washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 1 (1.16 g, 97%) as yellow-white amorphous was obtained.

[0239] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.03-0.13 (m, 2H), 0.43-0.54 (m, 2H), 0.75-0.83 (m, 1H), 1.12-1.18 (m, 1H), 1.51-1.56 (m, 1H), 1.87 (ddd, J=5.3, 14.0, 14.0 Hz, 1H), 2.08 (ddd, J=3.3, 12.2, 12.2 Hz, 1H), 2.12-2.19 (m, 1H), 2.21 (s, 3H), 2.28-2.48 (m, 3H), 2.59 (ddd, J=1.3, 5.0, 11.8 Hz, 1H), 2.66 (dd, J=6.1, 18.5 Hz, 1H), 2.83 (ddd, J=1.7, 6.8, 14.2 Hz, 1H), 2.90 (dd, J=1.8, 14.8 Hz, 1H), 2, 96 (d, J=14.8 Hz, 1H), 3.08 (d, J=18.5 Hz, 1H), 3.77 (s, 3H), 4.37 (d, J=6.1 Hz, 1H), 6.70 (dd, J=2.6, 8.4 Hz, 1H), 6.79 (d, J=2.6 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H).

Reference Example 2

Synthesis of 1-((4bR,8aS,9R)-11-(cyclopropylmethyl)-6,8a-dihydroxy-3-methoxy-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-7-yl)ethan-1-one (Compound 3)

[0240] ##STR00018##

[0241] Under an argon atmosphere, a 1.5 M hexane solution of n-butyllithium (3.5 mL, 8.25 mmol) was added dropwise to a tetrahydrofuran (10.0 mL) solution of diisopropylamine (1.1 mL, 7.72 mmol) at −78° C., and stirring was performed at −78° C. for 35 minutes. The temperature was raised to 0° C. and stirring was performed for 50 minutes, and then cooling was performed to −78° C. A tetrahydrofuran (9.0 mL) solution of the compound 1 (2.3 g, 6.1 mmol) was added dropwise, and stirring was performed for 21.5 hours while slowly raising the temperature to room temperature. A saturated sodium bicarbonate aqueous solution was added to the reaction solution, and extraction was performed with ethyl acetate. After combined organic layers were washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed. The obtained crude product was purified by silica gel column chromatography and preparative thin layer chromatography, and thus, the title compound 3 (1.6 g, 69%) as yellow-white amorphous was obtained.

[0242] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.19 (m, 2H), 0.50-0.60 (m, 2H), 0.82-0.94 (m, 1H), 1.26 (d, J=12.4 Hz, 1H), 1.96 (s, 3H), 2.08-2.19 (m, 2H), 2.28 (d, J=15.5 Hz, 1H), 2.36-2.43 (m, 3H), 2.58-2.64 (m, 1H), 2.84 (d, J=18.0 Hz, 1H), 2.92 (dd, J=6.9, 18.6 Hz, 1H), 2.94 (d, J=18.0 Hz, d, 1H), 3.11 (d, J=18.6 Hz, 1H), 3.19 (d, J=6.9 Hz, 1H), 3.76 (s, 3H), 6.71 (dd, J=2.6, 8.4 Hz, 1H), 6.78 (d, J=2.6 Hz, 1H), 7.02 (d, J=8.4 Hz, 1H), 15.9 (s, 1H), 1H (OH) was not observed.

Example 1

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-phenyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 4) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 5)

[0243] ##STR00019##

[0244] Under an argon atmosphere, phenylhydrazine hydrochloride (355.8 mg, 2.46 mmol) and methanesulfonic acid (283 μL, 4.36 mmol) were added to an ethanol (15 mL) solution of the compound 3 (699.8 mg, 1.83 mmol), and heating and reflux were performed for 2.5 hours. After the reaction solution was concentrated under reduced pressure, a saturated sodium bicarbonate aqueous solution was added thereto, and extraction was performed with ethyl acetate. After combined organic layers were washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 4 (97.4 mg, 11.7%) as yellow-white amorphous and the title compound 5 (620.8 mg, 74.7%) as yellow-white amorphous were obtained.

[0245] Compound 4

[0246] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.51-0.61 (m, 2H), 0.84-0.96 (m, 1H), 1.27-1.34 (m, 1H), 2.09 (s, 3H), 2.11-2.26 (m, 2H), 2.42 (d, J=6.5 Hz, 2H), 2.50 (d, J=16.6 Hz, 1H), 2.51 (d, J=16.6 Hz, 1H), 2.62-2.68 (m, 1H), 2.96 (dd, J=6.7, 18.5 Hz, 1H), 3.12 (br d, J=17.8 Hz, 2H), 3.25 (d, J=16.1 Hz, 1H), 3.27 (d, J=6.7 Hz, 1H), 3.56 (s, 3H), 6.46 (d, J=2.6 Hz, 1H), 6.63 (dd, J=2.6, 8.4 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 7.28-7.34 (m, 1H), 7.43-7.54 (m, 4H), 1H (OH) was not observed.

[0247] Compound 5

[0248] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.11-0.20 (m, 2H), 0.51-0.60 (m, 2H), 0.84-0.96 (m, 1H), 1.34-1.40 (m, 1H), 2.09 (s, 3H), 2.14-2.28 (m, 2H), 2.42 (d, J=6.5 Hz, 2H), 2.48 (d, J=15.9 Hz, 1H), 2.56 (d, J=15.9 Hz, 1H), 2.64-2.70 (m, 1H), 2.96 (dd, J=6.8, 18.5 Hz, 1H), 3.07 (d, J=16.5 Hz, 1H), 3.15 (d, J=18.5 Hz, 1H), 2.24 (d, J=6.8 Hz, 1H), 3.39 (d, 16.5 Hz, 1H), 3.71 (s, 3H), 6.68 (dd, J=2.6, 8.4 Hz, 1H), 6.90 (d, J=2.6 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.26-7.31 (m, 1H), 7.35-7.42 (m, 4H), 1H (OH) was not observed.

Example 2

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-9-isopropyl-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 6) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-isopropyl-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 7)

[0249] ##STR00020##

[0250] Method 1

[0251] A reaction was carried out using the compound 3 115.7 mg, 0.30 mmol), isopropylhydrazine (50.9 mg, 0.69 mmol), and methanesulfonic acid (47 μL, 0.72 mmol) in the same manner as that of Example 1, and thus, the title compound 6 (13.7 mg, 11%) as white oil and the title compound 7 (110.0 mg, 84%) as white oil were obtained.

[0252] Method 2

[0253] Under an argon atmosphere, silver(I) oxide (489.7 mg, 2.11 mmol) and iodine isopropyl (0.21 mL, 2.11 mmol) were added to a toluene (10 mL) solution of an equilibrium mixture (401.0 mg, 1.06 mmol) of the compound 18 and the compound 19 at room temperature, and heating and reflux were performed for 2 hours. After cooling, the reaction solution was filtered through celite, and the filtrate was concentrated under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 6 (121.4 mg, 27%) as colorless oil and the title compound 7 (13.0 mg, 9.9%) as colorless oil were obtained.

[0254] Compound 6

[0255] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.48-0.58 (m, 2H), 0.84-0.95 (m, 1H), 1.29-1.34 (m, 1H), 1.37 (d, J=6.7 Hz, 3H), 1.39 (d, J=6.7 Hz, 3H), 1.98 (s, 3H), 2.12-2.26 (m, 2H), 2.35-2.50 (m, 2H), 2.41 (d, J=6.6 Hz, 2H), 2.61-2.68 (m, 1H), 2.92 (dd, J=6.3, 18.4 Hz, 1H), 2.97 (d, J=16.2 Hz, 1H), 3.12 (d, J=18.4 Hz, 1H), 3.20 (d, J=6.3 Hz, 1H), 3.31 (d, J=16.2 Hz, 1H), 3.69 (s, 3H), 4.24 (sept, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.68 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

[0256] Compound 7

[0257] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.49-0.60 (m, 2H), 0.82-0.94 (m, 1H), 1.29-1.36 (m, 1H), 1.48 (d, J=6.7 Hz, 3H), 1.50 (d, J=6.7 Hz, 3H), 2.02 (s, 3H), 2.11-2.25 (m, 2H), 2.35-2.49 (m, 2H), 2.41 (d, J=6.4 Hz, 2H), 2.62-2.68 (m, 1H), 2.89 (d, J=16.2 Hz, 1H), 2.95 (dd, J=6.6, 18.6 Hz, 1H), 3.10 (d, J=18.6 Hz, 1H), 3.20 (d, J=16.2 Hz, 1H), 3.21 (d, J=6.6 Hz, 1H), 3.69 (s, 3H), 4.44 (sept, 1H), 6.65 (dd, J=2.6, 8.3 Hz, 1H), 6.68 (d, J=2.6 Hz, 1H), 6.99 (d, J=8.3 Hz, 1H), 1H (OH) was not observed.

Example 3

Synthesis of (6R,6aS,11aR)-9-(tert-butyl) (cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 8) and (6R,6aS,11aR)-10-(tert-butyl)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-o1 (Compound 9)

[0258] ##STR00021##

[0259] Method 1

[0260] A reaction was carried out using the compound 3 (96.1 mg, 0.25 mmol), t-butylhydrazine hydrochloride (38.5 mg, 0.31 mmol), and methanesulfonic acid (39 μL, 0.60 mmol) in the same manner as that of Example 1, and thus, the title compound 8 (6.8 mg, 6%) as yellow oil and the title compound 9 (88.1 mg, 81%) as yellow oil were obtained.

[0261] Method 2

[0262] A reaction was carried out using an equilibrium mixture (57.8 mg, 0.15 mmol) of the compound 18 and the compound 19, silver(I) oxide (38.8 mg, 0.17 mmol), and 2-bromo-2-methylpropane (26 μL, 0.23 mmol) in the same manner as that of Method 2 described in Example 2, and thus, the title compound 9 (8.0 mg, 12%) as colorless oil was obtained.

[0263] Compound 8

[0264] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.06-0.18 (m, 2H), 0.48-0.59 (m, 2H), 0.82-0.95 (m, 1H), 1.22-1.34 (m, 1H), 1.54 (s, 9H), 2.13 (s, 3H), 2.14-2.25 (m, 2H), 2.32-2.48 (m, 2H), 2.41 (d, J=6.6 Hz, 2H), 2.59-2.68 (m, 1H), 2.92 (dd, J=6.8, 18.4 Hz, 1H), 2.95 (d, J=16.3 Hz, 1H), 3.12 (d, J=18.4 Hz, 1H), 3.20 (d, J=6.8 Hz, 1H), 3.30 (d, J=16.3 Hz, 1H), 3.71 (s, 3H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.87 (d, J=2.4 Hz, 1H), 6.99 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

[0265] Compound 9

[0266] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.49-0.60 (m, 2H), 0.82-0.94 (m, 1H), 1.28-1.36 (m, 1H), 1.68 (s, 9H), 1.99 (s, 3H), 2.10-2.24 (m, 2H), 2.34-2.49 (m, 2H), 2.40 (d, J=6.5 Hz, 2H), 2.61-2.68 (m, 1H), 2.94 (dd, J=6.8, 18.5 Hz, 1H), 3.02-3.13 (m, 2H), 3.20 (d, J=6.6 Hz, 1H), 3.47 (d, J=16.1 Hz, 1H), 3.68 (s, 3H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.87 (d, J=2.6 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 4

Synthesis of (6R,6a5,11aR)-10-benzyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 10) and (6R,6aS,11aR)-9-benzyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 10a)

[0267] ##STR00022##

[0268] A reaction was carried out using the compound 3 (73.6 mg, 0.19 mmol), benzylhydrazine hydrochloride (45.7 mg, 0.29 mmol), and methanesulfonic acid (25 μL, 0.38 mmol) in the same manner as that of Example 1, and thus, the title compound 10 (85.1 mg, 94%) as yellow amorphous was obtained. The production of the position isomer 10a was also confirmed, but could not be isolated.

[0269] Compound 10

[0270] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.06-0.18 (m, 2H), 0.48-0.58 (m, 2H), 0.81-0.93 (m, 1H), 1.22-1.28 (m, 1H), 2.05 (s, 3H), 2.10-2.16 (m, 2H), 2.39 (d, J=6.4 Hz, 2H), 2.41-2.52 (m, 2H), 2.56-2.63 (m, 1H), 2.80 (d, J=16.2 Hz, 1H), 2.94 (dd, J=6.7, 18.5 Hz, 1H), 3.07 (d, J=16.2 Hz, 1H), 3.09 (d, J=18.5 Hz, 1H), 3.21 (d, J=6.7 Hz, 1H), 3.54 (s, 3H), 5.21 (d, J=6.1 Hz, 1H), 5.29 (d, J=6.1 Hz, 1H), 6.39 (d, J=2.6 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 7.20-7.35 (m, 5H), 1H (OH) was not observed.

Example 5

Synthesis of (6R,6a5,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyridin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 11) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyridin-2-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 11a)

[0271] ##STR00023##

[0272] A reaction was carried out at 65° C. using the compound 3 (76.7 mg, 0.20 mmol), 2-hydradinyl pyridine (43.6 mg, 0.40 mmol), and methanesulfonic acid (31 μL, 0.48 mmol) in the same manner as that of Example 1, and thus, the title compound 11 (85.4 mg, 93%) as yellow oil was obtained. The production of the position isomer 11a was also confirmed, but could not be isolated.

[0273] Compound 11

[0274] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.51-0.61 (m, 2H), 0.84-0.98 (m, 1H), 1.35-1.42 (m, 1H), 2.09 (s, 3H), 2.14-2.30 (m, 2H), 2.42 (d, J=6.5 Hz, 1H), 2.40-2.52 (m, 2H), 2.63-2.70 (m, 1H), 2.95 (dd, J=6.8, 18.6 Hz, 1H)3.14 (d, J=18.6 Hz, 1H), 3.20-3.26 (m, 2H), 3.25 (d, J=6.8 Hz, 1H), 3.61 (s, 3H), 4.39 (d, J=17.4 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 6.88 (d, J=2.6 Hz, 1H), 6.99 (d, J=8.4 Hz, 1H), 7.09 (ddd, J=1.0, 4.9, 7.5 Hz, 1H)7.73 (ddd, J=1.9, 7.8, 9.7 Hz, 1H), 7.83 (br d, J=8.3 Hz, 1H), 8.44 (ddd, J=1.0, 1.9, 4.9 Hz, 1H), 1H (OH) was not observed.

Example 6

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyridin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 12) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyridin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 12a)

[0275] ##STR00024##

[0276] A reaction was carried out using the compound 3 (83.0 mg, 0.22 mmol), 4-hydradinyl pyridine (synthesized by a method described in Arch. Pharm. Chem. Life Sci. 2019, 352, e1800247) (38.0 mg, 0.35 mmol), and methanesulfonic acid (33 μL, 0.51 mmol) in the same manner as that of Example 1, and thus, the title compound 12 (60.3 mg, 61%) as yellow oil was obtained. The production of the position isomer 12a was also confirmed, but could not be isolated.

[0277] Compound 12

[0278] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.11-0.20 (m, 2H), 0.52-0.62 (m, 2H), 0.86-0.95 (m, 1H), 1.34-1.41 (m, 1H), 2.10 (s, 3H), 2.17 (ddd, J=3.6, 11.8, 12.5 Hz, 1H), 2.26 (ddd, J=3.6, 11.8, 12.5 Hz, 1H), 2.44 (dd, J=1.8, 6.5 Hz, 2H), 2.46-2.52 (m, 2H), 2.64-2.71 (m, 1H), 2.96 (dd, J=6.8, 18.6 Hz, 1H), 3.13 (d, J=18.6 Hz, 1H)3.23 (d, J=16.2 Hz, 1H), 3.28 (d, J=6.8 Hz, 1H), 3.41 (d, J=16.2 Hz, 1H)3.57 (s, 3H)6.45 (d, J=2.6 Hz, 1H), 6.64 (dd, J=2.6, 8.3 Hz, 1H), 7.00 (d, J=8.3 Hz, 1H), 7.54 (dd, J=1.6, 4.8 Hz, 2H), 8.66 (dd, J=1.6, 4.8 Hz, 2H), 1H (OH) was not observed.

Example 7

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(pyrimidin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 13) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(pyrimidin-2-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 13a)

[0279] ##STR00025##

[0280] A reaction was carried out using the compound 3 (70.7 mg, 0.18 mmol), 2-hydradinyl pyridine (synthesized by a method described in Bioorg. Med. Chem. Lett. 2011, 21, 2887-2889) (31.1 mg, 0.18 mmol), and methanesulfonic acid (28 μL, 0.188 mmol) in the same manner as that of Example 1, and thus, the title compound 13 (57.8 mg, 69%) as white oil was obtained. The production of the position isomer 13a was also confirmed, but could not be isolated.

[0281] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.49-0.61 (m, 2H), 0.84-0.96 (m, 1H), 1.36-1.43 (m, 1H), 2.14 (s, 3H), 2.15-2.31 (m, 2H), 2.37-2.53 (m, 4H), 2.63-2.70 (m, 1H), 2.95 (dd, J=6.8, 18.7 Hz, 1H), 3.15 (d, J=18.7 Hz, 1H), 3.17-3.22 (m, 1H), 3.26 (d, J=6.8 Hz, 1H), 3.62 (s, 3H), 4.33 (d, J=17.7 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 6.79 (d, J=2.6 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.11 (dd, J=4.8, 4.8 Hz, 1H), 8.75 (d, J=4.8 Hz, 2H), 1H (OH) was not observed.

Example 8

Synthesis of a mixture (.SUP.1.H-NMR ratio, Compound 14:Compound 15=84:16) of 4-((6R,6aS,11aR) (cyclopropylmethyl)-6a-hydroxy-2-methoxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)pyridin-2(1H)-one (Compound 14) and 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-6a-hydroxy-2-methoxy-8-methyl-5,6,6a,7-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-9(11H)-yl)pyridin-2(1H)-one (Compound 15)

[0282] ##STR00026##

[0283] A reaction was carried out using the compound 3 (93.1 mg, 0.24 mmol), 4-hydradinylpyridin-2-(1H)-one (synthesized by a method described in Bioorg. Med. Chem. Lett. 2019, 29, 668-673) (48.1 mg, 0.36 mmol), and methanesulfonic acid (37 μL, 0.58 mmol) in the same manner as that of Example 1, and thus, a mixture (105.1 mg, 92%) of the title compound 14 and the title compound 15 as white amorphous was obtained.

[0284] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.11-0.29 (m, 2H), 0.52-0.60 (m, 2H), 0.86-0.91 (m, 1H), 1.34-1.40 (m, 1H), 2.07 (s, 3H), 2.13-2.22 (m, 2H), 2.39-2.53 (m, 1H), 2.42 (d, J=6.5 Hz, 2H), 2.62-2.72 (m, 1H), 3.10-3.30 (m, 3H), 3.45 (d, J=17.2 Hz, 1H), 3.59 (s, 0.48H), 3.62 (s, 2.52H), 3.69-3.79 (m, 2H), 6.44 (d, J=2.3 Hz, 0.16H), 6.53 (d, J=2.3 Hz, 0.84H), 6.63 (d, J=2.5 Hz, 0.84H), 6.65 (dd, J=2.5 Hz, 8.6 Hz, 0.84H), 6.66-6.70 (m, 0.32H), 6.90 (dd, J=2.1, 7.3 Hz, 0.84H), 6.96-7.23 (m, 1.16H), 7.30 (d, J=7.3 Hz, 0.16H), 7.34 (d, J=7.3 Hz, 0.84H), 2H (NH, OH) was not observed.

Example 9

Synthesis of (6R,6a5,11aR)-10-cyclohexyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 16) and (6R,6aS,11aR)-9-cyclohexyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 17)

[0285] ##STR00027##

[0286] Method 1

[0287] A reaction was carried out using the compound 3 (105.0 mg, 0.23 mmol), cyclohexylhydrazine hydrochloride (53.6 mg, 0.36 mmol), and methanesulfonic acid (42.7 μL, 0.66 mmol) in the same manner as that of Example 1, and thus, the title compound 16 (116.1 mg, 92%) as yellow oil and the title compound 17 (5.5 mg, 4%) as white oil were obtained.

[0288] Method 2

[0289] A reaction was carried out using an equilibrium mixture (45.5 mg, 0.12 mmol) of the compound 18 and the compound 19, silver(I) oxide (32.4 mg, 0.14 mmol), and iodocyclohexane (24 μL, 0.19 mmol) in the same manner as that of Method 2 described in Example 2, and thus, the title compound 16 (9.5 mg, 17%) and the title compound 17 (12.9 mg, 23%) as colorless oil was obtained.

[0290] Compound 16

[0291] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.50-0.59 (m, 2H), 0.83-0.94 (m, 1H), 1.22-1.50 (m, 5H), 1.61-1.76 (m, 1H), 1.87-1.98 (m, 6H), 2.01 (s, 3H), 2.11-2.25 (m, 2H), 2.38 (d, J=16.2 Hz, 1H), 2.41 (d, J=6.6 Hz, 2H), 2.44 (d, J=16.2 Hz, 1H), 2.62-2.78 (m, 1H), 2.88 (d, J=15.9 Hz, 1H), 2.95 (dd, J=6.8, 18.5 Hz, 1H), 3.10 (d, J=18.5 Hz, 1H), 3.19 (d, J=15.9 Hz, 1H), 3.22 (d, J=6.8 Hz, 1H), 3.70 (s, 3H), 3.93-4.03 (m, 1H), 6.65 (dd, J=2.5, 8.3 Hz, 1H), 6.65 (d, J=2.5 Hz, 1H), 6.99 (d, J=8.3 Hz, 1H).

[0292] Compound 17

[0293] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.20 (m, 2H), 0.48-0.59 (m, 2H), 0.82-0.95 (m, 1H), 1.19-1.31 (m, 5H), 1.63-1.89 (m, 1H), 1.74-1.93 (m, 6H), 2.01 (s, 3H), 2.12-2.25 (m, 2H), 2.40 (d, J=15.7 Hz, 1H), 2.61 (d, J=7.1 Hz, 2H), 2.46 (d, J=15.7 Hz, 1H), 2.60-2.69 (m, 1H), 2.93 (dd, J=6.4, 18.4 Hz, 1H), 2.98 (d, J=16.2 Hz, 1H), 3.11 (d, J=18.4 Hz, 1H), 3.20 (br d, J=6.4 Hz, 1H), 3.31 (d, J=16.2 Hz, 1H), 3.69 (s, 3H), 3.72-3.83 (m, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.85 (d, J=2.6 Hz, 1H), 6.48 (d, J=8.4 Hz, 1H).

Example 10

[0294] Synthesis of an equilibrium mixture of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 18) and (6R,6aS,11aR) (cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 19)

##STR00028##

[0295] A reaction was carried out using the compound 3 (89.5 mg, 0.23 mmol), hydrazine hydrochloride (28.4 mg, 0.42 mmol), and methanesulfonic acid (36 μL, 0.55 mmol) in the same manner as that of Example 1, and thus, an equilibrium mixture (87.0 mg, 98%) of the title compounds 18 and 19 as white amorphous was obtained.

[0296] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.50-0.60 (m, 2H), 0.83-0.94 (m, 1H), 1.31-1.37 (m, 1H), 2.03 (s, 3H), 2.14-2.24 (m, 2H), 2.37-2.52 (m, 2H), 2.41 (d, J=6.5 Hz, 2H), 2.60-2.70 (m, 1H), 2.90-2.96 (m, 1H), 2.99 (d, J=16.1 Hz, 1H), 3.12 (d, J=18.5 Hz, 1H), 3.22 (d, J=6.7 Hz, 1H), 3.26 (d, J=16.1 Hz, 1H), 3.70 (s, 3H), 6.65 (dd, J=2.3, 8.4 Hz, 1H), 6.78 (d, J=2.3 Hz, 1H), 6.99 (d, J=8.4 Hz, 1H), 2H (NH, OH) was not observed.

Example 11

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-phenyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 20)

[0297] ##STR00029##

[0298] Under an argon atmosphere, a 1.0 M dichloromethane solution (0.54 mL, 0.54 mmol) of boron tribromide was added to a dichloromethane (3 mL) solution of the compound 4 (82.7 mg, 0.18 mmol), and stirring was performed at 0° C. for 2 hours. Methanol (2 mL) was added to the reaction solution, stirring was performed at room temperature for 30 minutes, and then, concentration was performed under reduced pressure. A saturated sodium bicarbonate aqueous solution was added to the residue, and extraction was performed with a mixed solvent of chloroform and ethanol (chloroform:ethanol=3:1). After combined organic layers were washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 20 (57.7 mg, 72%) as yellow-white amorphous was obtained.

[0299] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.51-0.60 (m, 2H), 0.84-0.95 (m, 1H), 1.23-1.32 (m, 1H), 2.09 (s, 3H), 2.10-2.25 (m, 2H), 2.42 (d, J=6.5 Hz, 2H), 2.47 (d, J=16.1 Hz, 1H), 2.52 (d, J=16.1 Hz, 1H), 2.62-2.68 (m, 1H), 2.94 (dd, J=6.6, 18.5 Hz, 1H), 3.09 (br d, J=17.9 Hz, 2H), 3.20 (d, J=16.4 Hz, 1H), 3.27 (d, J=6.6 Hz, 1H), 6.42 (d, J=2.5 Hz, 1H), 6.52 (br d, J=8.3 Hz, 1H), 6.90 (d, J=8.1 Hz, 1H), 7.24-7.30 (m, 1H), 7.36-7.50 (m, 4H), 2H (OH×2) was not observed.

Example 12

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 21)

[0300] ##STR00030##

[0301] A reaction was carried out using the compound 5 (110 mg, 0.24 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.75 mL, 0.75 mmol) in the same manner as that of Example 11, and thus, the title compound 21 (78.1 mg, 73%) as yellow-white amorphous was obtained.

[0302] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.12-0.20 (m, 2H), 0.52-0.60 (m, 2H), 0.84-0.96 (m, 1H), 1.32-1.40 (m, 1H), 2.05 (s, 3H), 2.14-2.26 (m, 2H), 2.42 (d, J=6.5 Hz, 2H), 2.48 (d, J=16.0 Hz, 1H), 2.56 (d, J=15.9 Hz, 1H), 2.64-2.70 (m, 1H), 2.93 (dd, J=6.7, 18.6 Hz, 1H), 3.09 (d, J=16.5 Hz, 1H), 3.14 (d, J=18.6 Hz, 1H), 3.23 (d, J=6.7 Hz, 1H), 3.37 (d, 16.5 Hz, 1H), 6.51 (dd, J=2.5, 8.2 Hz, 1H), 6.87 (d, J=2.5 Hz, 1H), 6.91 (d, J=8.2 Hz, 1H), 7.18-7.30 (m, 5H), 2H (OH×2) was not observed.

Example 13

Synthesis of (6R, 6aS,11aR)-14-(cyclopropylmethyl) isopropyl-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano) naphtho [2,1-f] indazole-2,6a (7H) -diol (Compound 22)

[0303] ##STR00031##

[0304] A reaction was carried out using the compound 6 (13.7 mg, 0.03 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.09 mL, 0.09 mmol) in the same manner as that of Example 11, and thus, the title compound 22 (10.0 mg, 76%) as white oil was obtained.

[0305] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.10-0.18 (m, 2H), 0.50-0.58 (m, 2H), 0.84-0.91 (m, 1H), 1.20-1.28 (m, 1H), 1.30 (d, J=6.7 Hz, 3H), 1.36 (d, J=6.7 Hz, 3H), 1.99 (s, 3H), 2.09-2.68 (m, 2H), 3.57 (d, J=15.9 Hz, 1H), 2.41 (d, J=6.5 Hz, 2H), 2.47 (d, J=15.9 Hz, 1H), 2.60-2.68 (m, 1H), 2.89 (dd, J=6.6, 18.4 Hz, 1H), 2.96 (d, J=16.2 Hz, 1H), 3.11 (d, J=18.4 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 3.30 (d, J=16.2 Hz, 1H), 4.24 (sept, 1H), 6.61 (dd, J=2.5, 8.3 Hz, 1H), 6.84 (d, J=2.5 Hz, 1H), 6.92 (d, J=8.3 Hz, 1H), 2H (OH×2) was not observed.

Example 14

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-isopropyl-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 23)

[0306] ##STR00032##

[0307] A reaction was carried out using the compound 7 (101 mg, 0.24 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.72 mL, 0.72 mmol) in the same manner as that of Example 11, and thus, the title compound 23 (73.2 mg, 75%) as a white solid was obtained.

[0308] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.14-0.24 (m, 2H), 0.50-0.62 (m, 2H), 0.87-0.98 (m, 1H), 1.32-1.37 (m, 1H), 1.44 (d, J=6.8 Hz, 3H), 1.47 (d, J=6.8 Hz, 3H), 1.90 (s, 3H), 2.18-2.28 (m, 2H), 2.34 (d, J=16.5 Hz, 1H), 2.45-2.52 (m, 2H), 2.49 (d, J=16.5 Hz, 1H), 2.68 (d, J=6.7 Hz, 1H), 2.80 (d, J=16.2 Hz, 1H), 2.96 (dd, J=6.7, 18.6 Hz, 1H), 3.14 (d, J=18.6 Hz, 1H), 3.31 (d, J=16.2 Hz, 1H), 4.54 (sept, 1H), 6.55 (dd, J=2.5, 8.3 Hz, 1H), 6.63 (d, J=2.5 Hz, 1H), 6.93 (d, J=8.3 Hz, 1H), 3H (OH×2, 6C—H) was not observed. The proton at the 6-position (6C—H) was not confirmed because it overlapped with the signal of the heavy solvent.

Example 15

Synthesis of (6R,6aS,11aR)-9-(tert-butyl)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 24)

[0309] ##STR00033##

[0310] A reaction was carried out using the compound 8 (16.8 mg, 0.039 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.05 mL, 0.05 mmol) in the same manner as that of Example 11, and thus, the title compound 24 (10.7 mg, 66%) as yellow-white oil was obtained.

[0311] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.49-0.60 (m, 2H), 0.80-0.94 (m, 1H), 1.23-1.32 (m, 1H), 1.52 (s, 9H), 2.14 (s, 3H), 2.14-2.23 (m, 2H), 2.35 (d, J=15.8 Hz, 1H), 2.40 (d, J=5.0 Hz, 2H), 2.44 (d, J=15.8 Hz, 1H), 2.57-2.69 (m, 1H), 2.90 (dd, J=6.6, 18.6 Hz, 1H), 2.93 (d, J=16.3 Hz, 1H), 3.09 (d, J=18.6 Hz, 1H), 3.19 (d, J=6.6 Hz, 1H), 3.26 (d, J=16.3 Hz, 1H), 6.56 (dd, J=2.4, 8.2 Hz, 1H), 6.79 (d, J=2.4 Hz, 1H), 6.90 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 16

Synthesis of (6R,6a5,11aR)-10-(tert-butyl)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 25)

[0312] ##STR00034##

[0313] A reaction was carried out using the compound 9 (88.1 mg, 0.23 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.65 mL, 0.65 mmol) in the same manner as that of Example 11, and thus, the title compound 25 (24.8 mg, 29%) as a white solid was obtained.

[0314] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.02-0.15 (m, 2H), 0.38-0.53 (m, 2H), 0.73-0.90 (m, 1H), 1.15-1.29 (m, 1H), 1.57 (s, 9H), 1.86 (s, 3H), 2.15-2.18 (m, 2H), 2.23 (d, J=16.2 Hz, 1H), 2.36 (d, J=6.9 Hz, 2H), 2.40 (d, J=16.2 Hz, 1H), 2.57 (d, J=6.9 Hz, 1H), 2.80-2.92 (m, 2H), 3.03 (d, J=18.6 Hz, 1H), 3.46 (d, J=16.4 Hz, 1H), 6.45 (dd, J=2.4, 8.3 Hz, 1H), 6.57 (d, J=2.4 Hz, 1H), 6.82 (d, J=8.3 Hz, 1H), 3H (OH×2, 6C—H) was not observed. The proton at the 6-position (6C—H) was not confirmed because it overlapped with the signal of the heavy solvent.

Example 17

Synthesis of (6R,6a5,11aR)-10-benzyl (cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 26)

[0315] ##STR00035##

[0316] A reaction was carried out using the compound 10 (34.7 mg, 0.074 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.25 mL, 0.25 mmol) in the same manner as that of Example 11, and thus, the title compound 26 (21.8 mg, 65%) as yellow oil was obtained.

[0317] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.06-0.17 (m, 2H), 0.48-0.58 (m, 2H), 0.80-0.95 (m, 1H), 1.12-1.20 (m, 1H), 2.05 (s, 3H), 2.07-2.13 (m, 2H), 2.37 (d, J=6.5 Hz, 2H), 2.40-2.48 (m, 2H), 2.59 (d, J=6.1 Hz, 1H), 2.79 (d, J=16.2 Hz, 1H), 2.88 (dd, J=6.6, 18.4 Hz, 1H), 2.92 (d, J=16.2 Hz, 1H), 3.05 (d, J=18.4 Hz, 1H), 3.19 (d, J=6.6 Hz, 1H), 5.11 (d, J=16.0 Hz, 1H), 5.30 (d, J=16.0 Hz, 1H), 6.51 (dd, J=2.4, 8.3 Hz, 1H), 6.86 (d, J=8.3 Hz, 1H), 7.17 (br d, J=7.4 Hz, 1H), 7.28-7.40 (m, 5H), 2H (OH×2) was not observed.

Example 18

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methyl-10-(pyridin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 27)

[0318] ##STR00036##

[0319] A reaction was carried out using the compound 11 (85.3 mg, 0.19 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.50 mL, 0.50 mmol) in the same manner as that of Example 11, and thus, the title compound 27 (55.8 mg, 67%) as white amorphous was obtained.

[0320] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.50-0.61 (m, 2H), 0.84-0.96 (m, 1H), 1.33-1.40 (m, 1H), 2.08 (s, 3H), 2.12-2.28 (m, 2H), 2.42 (d, J=6.6 Hz, 2H), 2.44-2.52 (m, 2H), 2.66 (d, J=6.9 Hz, 1H), 2.93 (dd, J=6.9, 18.6 Hz, 1H)3.12 (d, J=18.6 Hz, 1H), 3.17-3.29 (m, 2H), 4.27 (d, J=17.6 Hz, 1H), 6.57 (dd, J=2.0, 8.2 Hz, 1H), 6.77 (d, J=2.0 Hz, 1H), 6.93 (d, J=8.2 Hz, 1H), 7.09 (br s, 1H), 7.72 (br d, J=7.3 Hz, 1H), 7.80 (br d, J=7.9 Hz, 1H), 8.42 (br s, 1H), 2H (OH×2) was not observed.

Example 19

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyridin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 28)

[0321] ##STR00037##

[0322] A reaction was carried out using the compound 12 (60.3 mg, 0.13 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.4 mL, 0.4 mmol) in the same manner as that of Example 11, and thus, the title compound 28 (9.8 mg, 14%) as a white solid was obtained.

[0323] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.18-0.28 (m, 2H), 0.55-0.60 (m, 2H), 0.98-1.14 (m, 1H), 1.36-1.45 (m, 1H), 2.13 (s, 3H), 2.18-2.39 (m, 2H), 2.45-2.55 (m, 2H), 2.47 (dd, J=1.2, 16.4 Hz, 1H), 2.68-2.76 (m, 1H), 2.64 (dd, J=6.9, 18.6 Hz, 1H), 3.19 (d, J=18.6 Hz, 1H), 3.26 (d, J=16.6 Hz, 1H), 3.38 (d, J=6.6 Hz, 1H), 3.50 (d, J=16.6 Hz, 1H), 6.44 (d, J=2.5 Hz, 1H), 6.97 (dd, J=2.5, 8.3 Hz, 1H), 6.97 (d, J=8.3 Hz, 1H), 7.75 (dd, J=1.6, 4.8 Hz, 2H), 8.76 (dd, J=1.5, 4, 9 Hz, 2H), 3H (OH×2, 7C—H or 11C—H) was not observed. The proton at the 7-position (7C—H) or the proton at the 11-position (11C—H) were not confirmed because they overlapped with the signal of the heavy solvent.

Example 20

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyrimidin-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 29)

[0324] ##STR00038##

[0325] A reaction was carried out using the compound 13 (57.8 mg, 0.13 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.6 mL, 0.6 mmol) in the same manner as that of Example 11, and thus, the title compound 29 (19.9 mg, 36%) as white amorphous was obtained.

[0326] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.04-0.12 (m, 2H), 0.40-0.52 (m, 2H), 0.76-0.89 (m, 1H), 1.22-1.30 (m, 1H), 2.01 (s, 3H), 2.18-2.22 (m, 2H), 2.31 (d, J=16.5 Hz, 1H), 2.36 (d, J=6.5 Hz, 2H), 2.47 (dd, J=2.0, 16.5 Hz, 1H), 2.59 (d, J=6.5 Hz, 1H), 2.86 (dd, J=6.5, 18.6 Hz, 1H), 3.02-3.09 (m, 1H), 3.07 (d, J=18.6 Hz, 1H), 3.22-3.26 (m, 1H), 4.17 (d, J=17.9 Hz, 1H), 6.43 (dd, J=2.5, 8.4 Hz, 1H), 6.55 (d, J=2.5 Hz, 1H), 6.84 (d, J=8.4 Hz, 1H), 7.22 (dd, J=4.8, 4.8 Hz, 1H), 8.71 (d, J=4.8 Hz, 2H), 2H (OH×2) was not observed.

Example 21

Synthesis of 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)pyridin-2(1H)-one (Compound 30) and 4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy methyl-5,6,6a,7-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-9(11H)-yl)pyridin-2(1H)-one (Compound 31)

[0327] ##STR00039##

[0328] A reaction was carried out using a mixture (125.1 mg, 0.26 mmol) of the compound 14 and the compound 15 and a 1.0 M dichloromethane solution (0.80 mL, 0.80 mmol) of boron tribromide in the same manner as that of Example 11, and thus, a mixture of the title compounds 30 and 31 as a white solid (.sup.1H-NMR ratio, compound 30:compound 31=84:16) (34.0 mg, 28%) was obtained.

[0329] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.12-0.24 (m, 2H), 0.50-0.62 (m, 2H), 0.86-0.98 (m, 1H), 1.33-1.39 (m, 1H), 2.01 (s, 0.48H), 2.52 (s, 2.52H), 2.14-2.33 (m, 2H), 2.39-2.50 (m, 3H), 2.52-2.59 (m, 1H), 2.62-2.72 (m, 1H), 2.90-2.96 (m, 1H), 2.95 (dd, J=6.5, 18.3 Hz, 1H), 3.10-3.21 (m, 2H), 3.47 (d, J=16.5 Hz, 1H), 6.46 (d, J=2.4 Hz, 1H), 6.53 (dd, J=2.4, 8.3 Hz, 1H), 6.66 (d, J=2.1 Hz, 0.84H), 6.67 (d, J=2.4 Hz, 0.16H), 6.73 (dd, J=2.1, 7.2 Hz, 0.16H), 6.87 (dd, J=2.1, 7.2 Hz, 0.84H), 6.94 (d, J=8.3 Hz, 1H), 7.50 (d, J=7.2 Hz, 0.16H), 7.56 (d, J=7.2 Hz, 0.84H), 3H (NH, OH×2) was not observed.

Example 22

Synthesis of (6R,6a5,11aR)-10-cyclohexyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 32)

[0330] ##STR00040##

[0331] A reaction was carried out using the compound 16 (58.5 mg, 0.13 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.6 mL, 0.6 mmol) in the same manner as that of Example 11, and thus, the title compound 32 (36.0 mg, 64%) as pale yellow amorphous was obtained.

[0332] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.48-0.60 (m, 2H), 0.81-0.92 (m, 1H), 1.17-1.49 (m, 5H), 1.63-1.71 (m, 1H), 1.82-1.95 (m, 6H), 2.00 (s, 3H), 2.11-2.25 (m, 2H), 2.38 (d, J=15.9 Hz, 1H), 2.41 (d, J=6.4 Hz, 2H), 2.45 (d, J=15.9 Hz, 1H), 2.63-2.69 (m, 1H), 2.85 (d, J=16.1 Hz, 1H), 2.93 (dd, J=6.4, 18.5 Hz, 1H), 3.07 (d, J=18.5 Hz, 1H), 3.15 (d, J=16.1 Hz, 1H), 3.21 (d, J=6.4 Hz, 1H), 3.90-4.00 (m, 1H), 6.54 (dd, J=2.2, 8.2 Hz, 1H), 6.62 (d, J=2.2 Hz, 1H), 6.90 (d, J=8.2 Hz, 1H), 1H (OH) was not observed.

Example 23

Synthesis of (6R,6aS,11aR)-9-cyclohexyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 33)

[0333] ##STR00041##

[0334] A reaction was carried out using the compound 17 (12.0 mg, 0.026 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.2 mL, 0.2 mmol) in the same manner as that of Example 11, and thus, the title compound 33 (10.0 mg, 86%) as pale yellow oil was obtained.

[0335] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.15-0.25 (m, 2H), 0.41-0.63 (m, 2H), 0.84-0.99 (m, 1H), 1.23-1.51 (m, 5H), 1.68-1.76 (m, 1H), 1.77-1.92 (m, 6H), 2.04 (s, 3H), 2.17-2.31 (m, 2H), 2.37 (d, J=16.1 Hz, 1H), 2.45-2.56 (m, 3H), 2.65-2.73 (m, 1H), 2.85 (d, J=16.2 Hz, 1H), 2.96 (dd, J=6.5, 18.6 Hz, 1H), 3.16 (d, J=18.6 Hz, 1H), 3.24 (d, J=16.2 Hz, 1H), 3.89-3.99 (m, 1H), 6.53 (dd, J=2.4, 8.3 Hz, 1H), 6.67 (d, J=2.4 Hz, 1H), 6.92 (d, J=8.3 Hz, 1H), 2H (OH, 6C—H) was not observed. The proton at the 6-position (6C—H) was not confirmed because it overlapped with the signal of the heavy solvent.

Example 24

Synthesis of an equilibrium mixture of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 34) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 35)

[0336] ##STR00042##

[0337] A reaction was carried out using an equilibrium mixture (72.2 mg, 0.19 mmol) of the compound 18 and the compound 19, and a 1.0 M dichloromethane solution of boron tribromide (0.2 mL, 0.2 mmol) in the same manner as that of Example 11, and thus, an equilibrium mixture (52.2 mg, 75%) of the title compounds 34 and 35 as a white solid was obtained.

[0338] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.11-0.22 (m, 2H), 0.47-0.58 (m, 2H), 0.86-0.91 (m, 1H), 1.22-1.32 (m, 1H), 1.97 (s, 3H), 2.14-2.24 (m, 2H), 2.32 (d, J=15.8 Hz, 1H), 2.42-2.50 (m, 3H), 2.62-2.68 (m, 1H), 2.86 (d, J=16.0 Hz, 1H), 2.95 (dd, J=6.8, 18.6 Hz, 1H), 3.14 (d, J=18.6 Hz, 1H), 3.16-3.22 (m, 2H), 6.55 (dd, J=2.6, 8.2 Hz, 1H), 6.73 (d, J=2.6 Hz, 1H), 6.91 (d, J=8.2 Hz, 1H), 3H (NH, OH×2) was not observed.

Example 25

Synthesis of ((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)(phenyl)methanone (Compound 36)

[0339] ##STR00043##

[0340] Under an argon atmosphere, pyridine (14.8 μL, 0.18 mmol) and benzoyl chloride (19.7 μL, 0.17 mmol) were added to a dichloromethane (1.5 mL) solution of an equilibrium mixture (52.2 mg, 0.14 mmol) of the compound 34 and the compound 35 at 0° C., and stirring was performed at room temperature for 30 minutes. A saturated sodium bicarbonate aqueous solution was added to the reaction solution, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 36 (27.6 mg, 41%) as yellow oil was obtained.

[0341] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.23 (m, 2H), 0.50-0.64 (m, 2H), 0.90-1.04 (m, 1H), 1.31-1.39 (m, 1H), 2.03 (s, 3H), 2.18-2.35 (m, 3H), 2.44-2.57 (m, 3H), 2.74-2.84 (m, 1H), 3.00 (dd, J=6.3, 18.8 Hz, 1H), 3.06-3.14 (m, 1H), 3.17 (d, J=18.0 Hz, 1H), 3.47 (d, J=6.3 Hz, 1H), 4.08 (d, J=17.9 Hz, 1H), 6.01 (dd, J=2.5, 8.3 Hz, 1H), 6.81 (d, J=2.5 Hz, 1H), 6.93 (d, J=8.3 Hz, 1H), 7.35-7.56 (m, 5H), 2H (OH×2) was not observed.

Example 26

Synthesis of (6R,6aS,11aR)-9-(cyclohexylmethyl)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 37) and (6R,6aS,11aR)-10-(cyclohexylmethyl)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-o1 (Compound 38)

[0342] ##STR00044##

[0343] Under an argon atmosphere, an N,N-dimethylformamide (1.5 mL) solution of the equilibrium mixture (81.0 mg, 0.21 mmol) of the compound 18 and the compound 19 was added dropwise to an N,N-dimethylformamide (1.0 mL) suspension of sodium hydride (55% in oil, 63.3 mg, 1.45 mmol) at 0° C., and stirring was performed for 30 minutes. An N,N-dimethylformamide (1.0 mL) solution of bromomethylcyclohexane (147 μL, 1.06 mmol) was added at 0° C., stirring was performed at room temperature for 21 hours, heating was performed at 80° C., and stirring was performed for 24 hours. After cooling, a sodium bicarbonate aqueous solution was added, and extraction was performed with diethyl ether. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 37 (17.8 mg, 18%) as yellow-white oil and the title compound 38 (25.1 mg, 25%) as yellow-white oil were obtained.

[0344] Compound 37

[0345] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.49-0.59 (m, 2H), 0.82-0.96 (m, 3H), 1.08-1.38 (m, 4H), 1.51-1.84 (m, 6H), 1.96 (s, 3H), 2.11-2.45 (m, 2H), 2.37-2.49 (m, 2H), 2.41 (d, J=6.3 Hz, 2H), 2.59-2.69 (m, 1H), 2.91 (dd, J=6.7, 18.5 Hz, 1H), 2.98 (d, J=16.2 Hz, 1H), 3.12 (d, J=18.5 Hz, 1H), 3.20 (d, J=6.7 Hz, 1H), 3.26 (d, J=16.2 Hz, 1H), 3.62-3.74 (m, 2H), 3.68 (s, 3H), 6.64 (dd, J=2.4, 8.4 Hz, 1H), 6.82 (d, J=2.4 Hz, 1H), 6.96 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

[0346] Compound 38

[0347] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.47-0.60 (m, 2H), 0.82-1.09 (m, 3H), 1.12-1.38 (m, 4H), 1.54-1.79 (m, 5H), 1.87-1.99 (m, 1H), 2.01 (s, 3H), 2.10-2.26 (m, 2H), 2.34-2.49 (m, 2H), 2.40 (d, J=6.3 Hz, 2H), 2.61-2.68 (m, 1H), 2.85 (d, J=16.0 Hz, 1H), 2.95 (dd, J=6.7, 18.2 Hz, 1H), 3.10 (d, J=18.2 Hz, 1H), 3.14 (d, J=16.0 Hz, 1H), 3.21 (d, J=6.7 Hz, 1H), 3.70 (s, 3H), 3.79 (dd, J=1.3, 7.3 Hz, 2H), 6.65 (dd, J=2.5, 8.4 Hz, 1H), 6.69 (d, J=2.5 Hz, 1H), 6.99 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 27

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methoxy-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 39)

[0348] ##STR00045##

[0349] A reaction was carried out using the equilibrium mixture (88.4 mg, 0.23 mmol) of the compound 18 and the compound 19, sodium hydride (55% in oil, 65.9 mg, 1.5 mmol), and 1-bromo-2-methoxyethane (110 μL, 1.17 mmol) in the same manner as that of Example 26, and thus, the title compound 39 (72.6 mg, 71%) as yellow-white oil was obtained.

[0350] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.45-0.58 (m, 2H), 0.84-0.94 (m, 1H), 1.16-1.24 (m, 1H), 2.03 (s, 3H), 2.05-2.12 (m, 1H), 2.19 (d, J=16.3 Hz, 1H), 2.23 (dd, J=6.9, 12.4 Hz, 1H), 2.41-2.53 (m, 2H), 2.57-2.65 (m, 2H), 2.73 (dd, J=6.1, 18.1 Hz, 1H), 3.04 (d, J=16.2 Hz, 1H), 3.15 (d, J=18.1 Hz, 1H), 3.19 (d, J=16.2 Hz, 1H), 3.27 (s, 3H), 3.42-3.51 (m, 4H), 3.70 (s, 3H), 3.82-3.90 (m, 1H), 6.64 (dd, J=2.5, 8.4 Hz, 1H), 6.78 (d, J=2.5 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 28

Synthesis of (6R,6aS,11aR)-10,14-bis(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 40) and (6R,6aS,11aR)-9,14-bis(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 41)

[0351] ##STR00046##

[0352] A reaction was carried out using the equilibrium mixture (80.4 mg, 0.21 mmol) of the compound 18 and the compound 19, sodium hydride (55% in oil, 25.4 mg, 0.58 mmol), and chloromethyl cyclopropane (140 μL, 1.51 mmol) in the same manner as that of Example 26, and thus, the title compound 40 (29.6 mg, 32%) as yellow oil and the title compound 41 (21.6 mg, 24%) as pale yellow oil were obtained.

[0353] Compound 40

[0354] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.33-0.44 (m, 2H), 0.48-0.64 (m, 4H), 0, 80-0.98 (m, 2H), 1.31-1.37 (m, 1H), 2.02 (s, 3H), 2.10-2.26 (m, 2H), 2.36-2.50 (m, 2H), 2.41 (d, J=6.4 Hz, 2H), 2.59-2.69 (m, 1H), 2.90 (d, J=16.1 Hz, 1H), 2.92-3.00 (m, 1H), 3.11 (d, J=18.5 Hz, 1H), 3.18 (d, J=16.1 Hz, 1H), 3.23 (d, J=6.6 Hz, 1H), 3.69 (s, 3H), 3.86 (dd, J=6.7, 14.4 Hz, 1H), 3.93 (dd, J=6.7, 14.4 Hz, 1H), 6.65 (dd, J=2.6, 8.3 Hz, 1H), 6.68 (d, J=2.6 Hz, 1H), 6.99 (d, J=8.3 Hz, 1H), 1H (OH) was not observed.

[0355] Compound 41

[0356] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.22-0.34 (m, 2H), 0.43-0.60 (m, 4H), 0.82-0.98 (m, 1H), 1.08-1.18 (m, 1H), 1.29-1.38 (m, 1H), 2.00 (s, 3H), 2.12-2.28 (m, 2H), 2.36-2.52 (m, 2H), 2.43 (d, J=6.4 Hz, 2H), 2.63-2.71 (m, 1H), 2.89-2.96 (m, 1H), 2.99 (d, J=16.2 Hz, 1H), 3.12 (d, J=18.5 Hz, 1H), 3.19-3.26 (m, 1H), 3.28 (d, J=16.2 Hz, 1H), 3.70 (s, 3H), 3.77 (dd, J=4.0, 13.2 Hz, 1H), 3.78 (dd, J=4.0, 13.2 Hz, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.85 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 29

Synthesis of (6R,6aS,11aR)-9-(cyclohexylmethyl) (cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 42)

[0357] ##STR00047##

[0358] A reaction was carried out using the compound 37 (17.8 mg, 0.03 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.11 mL, 0.11 mmol) in the same manner as that of Example 11, and thus, the title compound 42 (16.8 mg, 97%) as a white solid was obtained.

[0359] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.13-0.24 (m, 2H), 0.49-0.62 (m, 2H), 0.84-1.00 (m, 3H), 1.12-1.25 (m, 3H), 1.26-1.34 (m, 1H), 1.46-1.55 (m, 2H), 1.61-1.81 (m, 5H), 2.15-2.29 (m, 2H), 2.01 (s, 3H), 2.36 (d, J=16.2 Hz, 1H), 2.47 (d, J=6.5 Hz, 2H), 2.51 (d, J=16.2 Hz, 1H), 2.64-2.71 (m, 1H), 2.87 (d, J=16.1 Hz, 1H), 2.94 (dd, J=6.8, 18.5 Hz, 1H), 3.14 (d, J=18.5 Hz, 1H), 3.18 (d, J=16.1 Hz, 1H), 3.74 (d, J=7.4 Hz, 2H), 6.51 (dd, J=2.5, 8.1 Hz, 1H), 6.64 (d, J=2.5 Hz, 1H), 6.91 (d, J=8.1 Hz, 1H), 2H (OH×2) was not observed.

Example 30

Synthesis of (6R,6aS,11aR)-10-(cyclohexylmethyl)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 43)

[0360] ##STR00048##

[0361] A reaction was carried out using the compound 38 (28.1 mg, 0.059 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.18 mL, 0.18 mmol) in the same manner as that of Example 11, and thus, the title compound 43 (18.6 mg, 68%) as a white solid was obtained.

[0362] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.02-0.22 (m, 2H), 0.49-0.61 (m, 2H), 0.87-1.40 (m, 7H), 1.56-1.93 (m, 6H), 1.98 (s, 3H), 2.13-2.26 (m, 2H), 2.34 (d, J=16.1 Hz, 1H), 2.45 (d, J=6.5 Hz, 2H), 2.50 (d, J=16.1 Hz, 1H), 2.61-2.71 (m, 1H), 2.77 (d, J=16.3 Hz, 1H), 2.95 (dd, J=6.1, 18.7 Hz, 1H), 3.13 (d, J=18.7 Hz, 1H), 3.25 (d, J=16.3 Hz, 1H), 3.27 (d, J=6.1 Hz, 1H), 3.78-3.79 (m, 2H), 6.54 (dd, J=2.5, 8.3 Hz, 1H), 6.63 (d, J=2.5 Hz, 1H), 6.92 (d, J=8.3 Hz, 1H), 2H (OH×2) was not observed.

Example 31

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-(2-hydroxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 44)

[0363] ##STR00049##

[0364] A reaction was carried out using the compound 39 (72.6 mg, 0.17 mmol), and a 1.0 M dichloromethane solution of boron tribromide (1.0 mL, 1.0 mmol) in the same manner as that of Example 11, and thus, the title compound 44 (18.6 mg, 61%) as a white solid was obtained.

[0365] .sup.1H-NMR (400 MHz, CD.sub.3OD) δ (ppm): 0.16-0.30 (m, 2H), 0.51-0.66 (m, 2H), 0.94-1.04 (m, 1H), 1.26-1.38 (m, 1H), 2.03 (s, 3H), 2.30 (d, J=16.7 Hz, 1H), 2.53 (ddd, J=5.0, 13.0, 13.0 Hz, 1H), 2.63-2.74 (m, 2H), 2.86-3.06 (m, 2H), 2.98 (d, J=16.3 Hz, 1H), 3.21 (d, J=7.0 Hz, 1H), 3.24-3.34 (m, 3H), 3.38-3.44 (m, 1H), 3.54-3.61 (m, 1H), 3.66-3.86 (m, 3H), 6.55 (dd, J=2.2, 8.3 Hz, 1H), 6.70 (d, J=2.2 Hz, 1H), 6.95 (d, J=8.3 Hz, 1H), 3H (OH×3) was not observed.

Example 32

Synthesis of (6R,6aS,11aR)-10,14-bis(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 45)

[0366] ##STR00050##

[0367] A reaction was carried out using the compound 40 (29.6 mg, 0.068 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.2 mL, 0.2 mmol) in the same manner as that of Example 11, and thus, the title compound 45 (13.5 mg, 47%) as white oil was obtained.

[0368] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.11-0.19 (m, 2H), 0.20-0.33 (m, 2H), 0.43-0.61 (m, 4H), 0.80-0.97 (m, 2H), 1.08-1.20 (m, 1H), 1, 27-1.37 (m, 1H), 2.00 (s, 3H), 2.16-2.24 (m, 2H), 2.40 (d, J=15.9 Hz, 1H), 2.42 (d, J=7.4 Hz, 2H), 2.47 (d, J=15.9 Hz, 1H), 2.66-2.70 (m, 1H), 2.85 (d, J=16.0 Hz, 1H), 2.94 (dd, J=6.5, 18.6 Hz, 1H), 3.08 (d, J=18.6 Hz, 1H), 3.09 (d, J=16.0 Hz, 1H), 3.24 (d, J=6.5 Hz, 1H), 3.74 (dd, J=6.7, 14.4 Hz, 1H), 3.82 (dd, J=6.8, 14.4 Hz, 1H), 6.55 (dd, J=2.4, 8.2 Hz, 1H), 6.64 (d, J=2.4 Hz, 1H), 6.90 (d, J=8.2 Hz, 1H).1H (OH) was not observed.

Example 33

Synthesis of (6R,6aS,11aR)-9,14-bis(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 46)

[0369] ##STR00051##

[0370] A reaction was carried out using the compound 41 (21.6 mg, 0.050 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.2 mL, 0.2 mmol) in the same manner as that of Example 11, and thus, the title compound 46 (15.8 mg, 76%) as white oil was obtained.

[0371] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.12-0.24 (m, 3H), 0.27-0.33 (m, 1H), 0.36-0.47 (m, 2H), 0.50-0.60 (m, 2H), 0.81-0.96 (m, 2H), 1.04-1.16 (m, 1H), 1.30-1.38 (m, 1H), 2.01 (s, 3H), 2.13-2.30 (m, 2H), 2.41 (d, J=15.9 Hz, 1H), 2.44 (d, J=6, 5 Hz, 2H), 2, 51 (d, J=15.9 Hz, 1H), 2.68 (br d, J=6.3 Hz, 1H), 2.92 (dd, J=6.7, 18.4 Hz, 1H), 3.01 (d, J=16.1 Hz, 1H), 3.12 (d, J=18.4 Hz, 1H), 3.24 (br d, J=6.7 Hz, 1H), 3.38 (d, J=16.1 Hz, 1H), 3.74 (dd, J=6.8, 14.6 Hz, 1H), 3.77 (dd, J=6.8, 14.6 Hz, 1H), 6.63 (dd, J=2.2, 8.3 Hz, 1H), 6.94 (d, J=8.3 Hz, 1H), 6.96 (d, J=2.2 Hz, 1H), 1H (OH) was not observed.

Example 34

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methoxy-8-methyl-10-(pyridin-3-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 47) and (6R,6aS,11aR)-14-(cyclopropylmethyl) methoxy-8-methyl-9-(pyridin-3-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 48)

[0372] ##STR00052##

[0373] Under an argon atmosphere, copper(I) iodide (22.5 mg, 0.12 mmol), N,N′-dimethylethylenediamine (23 μL, 0.21 mmol), potassium carbonate (59.5 mg, 0.43 mmol), and 3-bromopyridine (21.0 μL, 0.22 mmol) were added to an N,N-dimethylformamide (0.7 mL) solution of the equilibrium mixture (85.8 mg, 0.22 mmol) of the compound 18 and the compound 19, and heating and reflux were performed for 24 hours. After cooling, the produced insoluble matters were removed by filtration through celite, a sodium carbonate aqueous solution was added to the filtrate, and extraction was performed with diethyl ether. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 47 (7.4 mg, 7%) as yellow oil and the title compound 48 (5.1 mg, 5%) as yellow oil were obtained.

[0374] Compound 47

[0375] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.11-0.20 (m, 2H), 0.52-0.60 (m, 2H), 0.84-0.95 (m, 1H), 1.30-1.36 (m, 1H), 2.10 (s, 3H), 2.14-2.28 (m, 2H), 2.43 (d, J=6.4 Hz, 2H), 2.46-2.56 (m, 2H), 2.64-2.70 (m, 1H), 2.97 (dd, J=6.4, 18.6 Hz, 1H), 3.12-3.16 (m, 1H), 3.12 (d, J=18.6 Hz, 1H)3.24-3.31 (m, 2H), 3.58 (s, 3H)6.45 (d, J=2.6 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.43 (br dd, J=5.1, 7.8 Hz, 1H), 7.90 (ddd, J=1.5, 2.5, 8.3 Hz, 1H), 8.57 (br s, 1H), 8.86 (br s, 1H), 1H (OH) was not observed.

[0376] Compound 48

[0377] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.21 (m, 2H), 0.51-0.62 (m, 2H), 0.82-0.97 (m, 1H), 1.36-1.42 (m, 1H), 2.08-2.30 (m, 3H), 2.13 (s, 3H), 2.40-2.48 (m, 2H), 2.50-2.60 (m, 1H), 2.53 (d, J=18.0 Hz, 1H), 2.04-2.72 (m, 1H), 2.97 (dd, J=6.7, 18.6 Hz, 1H), 3.08 (d, J=16.6 Hz, 1H)3.16 (d, J=12.5 Hz, 1H), 3.22-3.31 (m, 1H), 3.39 (d, J=16.6 Hz, 1H), 3.72 (s, 3H)6.68 (dd, J=2.6, 8.4 Hz, 1H), 6.88 (d, J=2.6 Hz, 1H), 7.02 (d, J=8.4 Hz, 1H), 7.36 (dd, J=5.0, 7.0 Hz, 1H), 8.66 (ddd, J=1.3, 2.1, 8.1 Hz, 1H), 8.54 (br s, 1H), 8.68 (br s, 1H).

Example 35

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(pyridin-3-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 49)

[0378] ##STR00053##

[0379] A reaction was carried out using the compound 47 (7.4 mg, 0.016 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.1 mL, 0.1 mmol) in the same manner as that of Example 11, and thus, the title compound 49 (3.8 mg, 53%) as yellow-white amorphous was obtained.

[0380] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.12-0.20 (m, 2H), 0.52-0.60 (m, 2H), 0.82-0.95 (m, 1H), 1.31-1.36 (m, 1H), 2.10 (s, 3H), 2.14-2.24 (m, 2H), 2.44 (d, J=6.4 Hz, 1H), 2.48 (d, J=16.2 Hz, 1H), 2.56 (d, J=16.2 Hz, 1H), 2.62-2.72 (m, 2H), 2.96 (dd, J=6.4, 18.6 Hz, 1H), 3.07-3.13 (m, 1H), 3.12 (d, J=18.6 Hz, 1H), 3.23 (d, J=16.3 Hz, 1H), 3.26-3.33 (m, 1H), 6.53 (d, J=2.4 Hz, 1H), 6.61 (dd, J=2.4, 8.2 Hz, 1H), 6.95 (d, J=8.2 Hz, 1H), 7.40 (br s, 1H), 7.94 (br d, J=8.0 Hz, 1H), 8.42 (br s, 1H), 8.79 (br s, 1H), 2H (OH×2) was not observed.

Example 36

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(thiazol-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 50) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(thiazol-2-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 50a)

[0381] ##STR00054##

[0382] Under an argon atmosphere, a tetrahydrofuran (1.5 mL) solution of the equilibrium mixture (42.7 mg, 0.10 mmol) of the compound 18 and the compound 19 was added dropwise to a tetrahydrofuran (1.0 mL) suspension of sodium hydride (55% in oil, 26.7 mg, 0.61 mmol) at 0° C., and stirring was performed at room temperature for 1.5 hours. 2-Chlorothiazole (43 μL, 0.50 mmol) was added dropwise, and heating and reflux were performed for 15.5 hours. After cooling, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 50 (7.1 mg, 14%) as yellow oil was obtained. The production of the position isomer 50a was also confirmed, but could not be isolated.

[0383] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.50-0.61 (m, 2H), 0.83-0.95 (m, 1H), 1.39-1.46 (m, 1H), 2.08 (s, 3H), 2.13-2.32 (m, 2H), 2.39-2.52 (m, 4H), 2.63-2.73 (m, 1H), 2.95 (dd, J=6.8, 18.6 Hz, 1H), 3.14 (d, J=18.6 Hz, 1H), 3.16 (d, J=17.6 Hz, 1H), 3.25 (d, J=6.6 Hz, 1H), 3.62 (s, 3H), 4.27 (d, J=17.6 Hz, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.82 (d, J=2.6 Hz, 1H), 6.96-7.02 (m, 2H), 7.54 (d, 1H), 1H (OH) was not observed.

Example 37

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(thiazol-2-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 51)

[0384] ##STR00055##

[0385] A reaction was carried out using the compound 50 (7.1 mg, 0.015 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.08 mL, 0.08 mmol) in the same manner as that of Example 11, and thus, the title compound 51 (5.0 mg, 73%) as a white solid was obtained.

[0386] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.15-0.26 (m, 2H), 0.50-0.62 (m, 2H), 0.88-1.00 (m, 1H), 1.38-1.42 (m, 1H), 2.07 (s, 3H), 2.24-2.32 (m, 2H), 2.41 (d, J=16.4 Hz, 1H), 2.51 (d, J=6.4 Hz, 2H), 2.56 (dd, J=1.7, 16.4 Hz, 1H), 2.68-2.74 (m, 1H), 2.99 (dd, J=6.6, 18.6 Hz, 1H), 3.06 (d, J=17.8 Hz, 1H), 3.18 (d, J=18.6 Hz, 1H), 3.37 (d, J=6.6 Hz, 1H), 4.18 (d, J=17.8 Hz, 1H), 6.55 (dd, J=2.4, 8.3 Hz, 1H), 6.66 (d, J=2.4 Hz, 1H), 6.95 (d, J=8.3 Hz, 1H), 7.24 (dd, J=1.9, 3.6 Hz, 1H), 7.60 (dd, J=1.1, 3.6 Hz, 1H), 2H (OH×2) was not observed.

Reference Example 3

Synthesis of (4bR,8aS,9R)-3-(benzyloxy)-11-(cyclopropylmethyl)-8a-hydroxy-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-6(7H)-one (Compound 52)

[0387] ##STR00056##

[0388] Under an argon atmosphere, benzyl bromide (267 mg, 1.58 mmol) was added to an acetonitrile (10 mL) suspension of (4bR,8aS,9R)-11-(cyclopropylmethyl)-3,8a-dihydroxy-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-6(7H)-one (Compound 53) (synthesized by a method described in Bioorganic & Medicinal Chemistry 2016, 24, 2199-2205) (344 mg, 1.05 mmol) and potassium carbonate (363 mg, 2.63 mmol), and stirring was performed at room temperature for 45 hours. Water was added to the reaction solution, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel chromatography, and thus the title compound 52 (392 mg, 89%) as colorless amorphous was obtained.

[0389] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.49-0.59 (m, 2H), 0.82-0.92 (m, 1H), 1.11-1.21 (m, 1H), 1.80 (m, 1H), 1.87 (ddd, J=5.1, 13.2, 13.2 Hz, 1H), 2.05-2.20 (m, 3H), 2.39 (d, J=6.5 Hz, 12.8 Hz, 1H), 2.40 (dd, J=6.7, 12.8 Hz, 1H), 2.54-2.62 (m, 1H), 2.70-2.85 (m, 3H), 3.05 (d, J=13.9 Hz, 1H), 3.06 (d, J=18.7 Hz, 1H), 3.13 (d, J=6.4 Hz, 1H), 4.67-4.84 (br s, 1H), 4.98 (d, J=11.5 Hz, 1H), 5.02 (d, J=11.5 Hz, 1H), 6.75 (dd, J=2.6, 8.4 Hz, 1H), 6.90 (d, J=2.6 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 7.28-7.34 (m, 1H), 7.35-7.40 (m, 2H) , 7.41-7.46 (m, 2H).

Reference Example 4

Synthesis of (4bR,8aS,9R)-3-(benzyloxy)-11-(cyclopropylmethyl)-6-oxo-5,6,7,8,9,10-hexahydro-8aH-9,4b-(epiminoethano)phenanthren-8a-yl acetate (Compound 54)

[0390] ##STR00057##

[0391] A reaction was carried out using the compound 52 (649.7 mg, 1.6 mmol) in the same manner as that of Reference Example 1, and thus, the title compound 54 (637.4 mg, 89%) as white oil was obtained.

[0392] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.03-0.14 (m, 2H), 0.43-0.55 (m, 2H), 0.73-0.85 (m, 1H), 1.10-1.19 (m, 1H), 1.88 (ddd, J=5.3, 14.0, 14.0 Hz, 1H), 2.08 (ddd, J=3.3, 12.2, 12.2 Hz, 1H), 2.12-2.25 (m, 1H), 2.20 (s, 3H), 2.28-2.39 (m, 3H), 2.44 (ddd, J=7.0, 14.4, 14.4 Hz, 1H), 2.59 (dd, J=3.7, 11.9 Hz, 1H), 2.66 (dd, J=6.3, 18.4 Hz, 1H), 2.83 (ddd, J=1.6, 7.0, 7.0 Hz, 1H), 2.86-2.93 (m, 1H), 2.98 (d, J=14.8 Hz, 1H), 3.08 (d, J=18.4 Hz, 1H), 3.00 (d, J=6.0 Hz, 1H), 5.00 (dd, J=1.5, 11, 5 Hz, 2H), 6.77 (dd, J=2.5, 8.4 Hz, 1H), 6.89 (d, J=2.5 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.29-7.48 (m, 5H).

Reference Example 5

Synthesis of 1-((4bR,8aS,9R)-3-(benzyloxy)-11-(cyclopropylmethyl)-6,8a-dihydroxy-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-7-yl)ethan-1-one (Compound 55)

[0393] ##STR00058##

[0394] A reaction was carried out using diisopropylamine (260 μL, 1.8 mmol), a 1.5 M hexane solution of n-butyllithium (1.26 mL, 1.9 mmol), and the compound 54 (637.4 mg, 1.39 mmol) in the same manner as that of Reference Example 2, and thus, the title compound 55 (253.4 mg, 45%) as yellow-white amorphous was obtained.

[0395] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.48-0.60 (m, 2H), 0.81-0.92 (m, 1H), 1.20-1.27 (m, 1H), 1.96 (s, 3H), 2.00-2.14 (m, 2H), 2.28 (d, J=15.5 Hz, 1H), 2.34-2.41 (m, 3H), 2.57-2.64 (m, 1H), 2.81 (d, J=18.1 Hz, 1H), 2.91 (dd, J=6.9, 18.1 Hz, 1H), 2.94 (d, J=18.1 Hz, 1H), 3.01 (d, J=18.6 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 4.99 (s, 2H), 6.78 (dd, J=2.5, 8.4 Hz, 1H), 6.87 (d, J=2.5 Hz, 1H), 7.02 (d, J=8.4 Hz, 1H), 7.28-7.46 (m, 5H), 15.9 (s, 1H), 1H (OH) was not observed.

Example 38

Synthesis of an equilibrium mixture of (6R,6a5,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 56) and (6R,6aS,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 57)

[0396] ##STR00059##

[0397] A reaction was carried out using the compound 55 (253.4 mg, 0.55 mmol), hydrazine hydrochloride (58.6 mg, 0.86 mmol), and methanesulfonic acid (195 μL, 3.0 mmol) in the same manner as that of Example 1, and thus, an equilibrium mixture (231.3 mg, 92%) of the title compounds 56 and 57 as yellow amorphous was obtained.

[0398] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.06-0.20 (m, 2H), 0.48-0.60 (m, 2H), 0.82-0.91 (m, 1H), 1.28-1.36 (m, 1H), 2.02 (s, 3H), 2.14-2.20 (m, 2H), 2.40 (d, J=6.5 Hz, 1H), 2.42-2.52 (m, 2H), 2.59-2.69 (m, 1H), 2.90-2.98 (m, 1H), 2.97 (d, J=15.5 Hz, 1H), 3.12 (d, J=18.5 Hz, 1H), 3.19-3.22 (m, 1H), 3.23 (d, J=8.2 Hz, 1H), 4.92 (s, 2H), 6.71 (dd, J=2.5, 8.4 Hz, 1H), 6.86 (d, J=2.5 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 7.27-7.40 (m, 5H), 15.9 (s, 1H), 2H (NH, OH) was not observed.

Example 39

Synthesis of (6R,6a5,11aR)-2-(benzyloxy) (cyclopropylmethyl)-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 58)

[0399] ##STR00060##

[0400] A reaction was carried out using the equilibrium mixture (215.0 mg, 0.47 mmol) of the compound 56 and the compound 57, sodium hydride (55% in oil, 98.7 mg, 2.26 mmol), and 1-bromo-2-methoxyethane (310 μL, 3.3 mmol) in the same manner as that of Example 26, and thus, the title compound 58 (84.4 mg, 35%) as yellow-white amorphous was obtained.

[0401] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.44-0.60 (m, 2H), 0.80-0.96 (m, 1H), 1.15-1.23 (m, 1H), 2.04 (s, 3H), 2.06-2.24 (m, 3H), 2.28-2.56 (m, 4H), 2.68 (dd, J=6.2, 18.3 Hz, 1H), 3.05 (d, J=16.2 Hz, 1H), 3.11-3.20 (m, 2H), 3.27 (s, 3H), 3.42-3.60 (m, 4H), 3.82-3.91 (m, 1H), 4.93 (s, 2H), 6.71 (dd, J=2.5, 8.4 Hz, 1H), 6.87 (d, J=2.5 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 7.27-7.41 (m, 5H), 1H (OH) was not observed.

Example 40

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-10-(2-methoxyethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 59)

[0402] ##STR00061##

[0403] Acetic acid (5 μL, 0.0087 mmol) and 10% palladium/carbon (17.2 mg) were added to a methanol (2 mL) solution of the compound 58 (34.6 mg, 0.067 mmol), and stirring was performed under a hydrogen atmosphere at room temperature for 16 hours. After filtration through celite, the filtrate was concentrated under reduced pressure, the obtained crude product was produced by silica gel column chromatography, and thus, the title compound 59 (24.9 mg, 87%) as a white solid was obtained.

[0404] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.12-0.26 (m, 2H), 0.47-0.63 (m, 2H), 0.86-0.96 (m, 1H), 1.16-1.24 (m, 1H), 2.02 (s, 3H), 2.12-2.24 (m, 1H), 2.21 (d, J=16.3 Hz, 1H), 2.34-2.66 (m, 4H), 2.71 (d, J=16.3 Hz, 1H), 2.79 (dd, J=6.3, 18.3 Hz, 1H), 2.93 (d, J=16.2 Hz, 1H), 3.16 (d, J=16.2 Hz, 1H), 3.18 (d, J=18.3 Hz, 1H), 3.24 (s, 3H), 3.46-3.64 (m, 3H), 3.68-3.76 (m, 1H), 3.81-3.88 (m, 1H), 6.52 (dd, J=2.2, 8.3 Hz, 1H), 6.67 (d, J=2.2 Hz, 1H), 6.91 (d, J=8.3 Hz, 1H), 2H (OH×2) was not observed.

Example 41

Synthesis of (6R,6aS,11aR)-2-methoxy-8,14-dimethyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 60)

[0405] ##STR00062##

[0406] Under an argon atmosphere, 2,2,2-trichloroethyl chloroformate (115 μL, 0.84 mmol) and potassium carbonate (91.3 mg, 0.66 mmol) were added to a 1,1,2,2-tetrachloroethane (2.5 mL) solution of the compound 5 (123.3 mg, 0.27 mmol), and heating and reflux were performed for 12 hours. After cooling, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and extraction was performed with chloroform. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was crudely purified by silica gel chromatography and was used as it was for the next reaction. Under an argon atmosphere, a tetrahydrofuran solution of the crude product (52.6 mg) was added dropwise to a tetrahydrofuran (3.0 mL) suspension of lithium aluminum hydride (15.0 mg, 0.4 mmol) at 0° C., and stirring was performed at room temperature for 1 hour. Sodium sulfate decahydrate was added under ice cooling, stirring was performed for 16 hours, and then, filtration through celite was performed. After the filtrate was concentrated under reduced pressure, the obtained crude product was purified by preparative TLC, and thus, the title compound 60 (24.4 mg, 66%) as yellow oil was obtained.

[0407] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.23-1.32 (m, 1H), 2.09 (s, 3H), 2.14-2.26 (m, 2H), 2.37-2.56 (m, 3H), 2.42 (s, 3H), 2.91-3.00 (m, 2H), 3.10 (d, J=15.4 Hz, 1H), 3.16-3.28 (m, 2H), 3.57 (s, 3H), 6.46 (d, J=2.6 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.28-7.35 (m, 1H), 7.43-7.53 (m, 4H), 1H (OH) was not observed.

Example 42

Synthesis of (6R,6aS,11aR)-8,14-dimethyl-10-phenyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 61)

[0408] ##STR00063##

[0409] A reaction was carried out using the compound 60 (24.8 mg, 0.06 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.2 mL, 0.2 mmol) in the same manner as that of Example 11, and thus, the title compound 61 (9.2 mg, 38%) as a white solid was obtained.

[0410] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.24-1.32 (m, 1H), 2.08 (s, 3H), 2.13-2.25 (m, 2H), 2.41 (s, 3H), 2.36-2.58 (m, 3H), 2.89-2.98 (m, 2H), 3.09 (d, J=16.4 Hz, 1H), 3.14-3.22 (m, 1H), 3.22 (d, J=16.4 Hz, 1H), 6.41 (d, J=2.5 Hz, 1H), 6.44 (dd, J=2.5, 8.2 Hz, 1H), 6.94 (J=8.2 Hz, 1H), 7.27-7.32 (m, 1H), 7.47-7.53 (m, 4H), 2H (OH×2) was not observed.

Reference Example 6

Synthesis of (4bR,8aS,9R)-3-methoxy-11-methyl-6-oxo-5,6,7,8,9,10-hexahydro-8aH-9,4b-(epiminoethano)phenanthren-8a-yl acetate (Compound 62)

[0411] ##STR00064##

[0412] A reaction was carried out using (4bR,8aS,9R)-8a-hydroxy-3-methoxy-11-methyl-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-6(7H)-one (Compound 63) (synthesized by a method described in Bioorganic & Medicinal Chemistry Letters 2010, 20, 6302-6305) (267.3 mg, 0.89 mmol) in the same manner as that of Reference Example 1, and thus, the title compound 62 (238.5 mg, 78%) as yellow oil was obtained.

[0413] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.11-1.19 (m, 1H), 1.88 (ddd, J=5.3, 14.0, 14.0 Hz, 1H), 2.03-2.12 (m, 2H), 2.20 (s, 3H), 2.28-2.45 (m, 3H), 2.33 (s, 3H), 6.64 (dd, J=6.0, 18.5 Hz, 1H), 2.82 (ddd, J=1.7, 6.8, 14.8 Hz, 1H), 2.89 (dd, J=1.7, 14.8 Hz, 1H), 2.97 (d, J=14.8 Hz, 1H), 3.19 (d, J=18.5 Hz, 1H), 3.77 (s, 3H), 4.09 (d, J=6.0 Hz, 1H), 6.71 (dd, J=2.6, 8.4 Hz, 1H), 6.78 (d, J=2.6 Hz, 1H), 7.02 (d, J=8.4 Hz, 1H).

Reference Example 7

Synthesis of 1-((4bR,8aS,9R)-6,8a-dihydroxy-3-methoxy-11-methyl-8,8a,9,10-tetrahydro-5H-9,4b-(epiminoethano)phenanthren-7-yl)ethan-1-one (Compound 64)

[0414] ##STR00065##

[0415] A reaction was carried out using diisopropylamine (85 μL, 0.60 mmol), a 2.6 M hexane solution of n-butyllithium (220 μL, 0.57 mmol), and the compound 62 (186 mmg, 0.54 mmol) in the same manner as that of Reference Example 2, and thus, the title compound 64 (121.7 mg, 66%) as yellow amorphous was obtained.

[0416] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.22-1.28 (m, 1H), 1.95 (s, 3H), 2.04 (ddd, J=5.1, 12.6, 12.6 Hz, 1H), 2.10-2.19 (m, 2H), 2.27 (d, J=18.2 Hz, 1H), 2.34-2.37 (m, 1H), 2.39 (m, 3H), 2.84-2.95 (m, 4H), 3.20 (d, J=17.0 Hz, 1H), 3.76 (s, 3H), 6.72 (dd, J=2.6, 8.4 Hz, 1H), 6.78 (d, J=2.6 Hz, 1H), 7.04 (d, J=8.4 Hz, 1H), 15.9 (s, 1H), 1H (OH) was not observed.

Example 43

Synthesis of (6R,6a5,11aR)-10-benzyl-2-methoxy-8,14-dimethyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 65) and (6R,6aS,11aR)-9-benzyl-2-methoxy-8,14-dimethyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 65a)

[0417] ##STR00066##

[0418] A reaction was carried out using the compound 64 (58.5 mg, 0.17 mmol), benzylhydrazine hydrochloride (38.1 mg, 0.35 mmol), and methanesulfonic acid (22 μL, 0.34 mmol) in the same manner as that of Example 1, and thus, the title compound 65 (15.0 mg, 21%) as a yellow-white solid was obtained. The production of the position isomer 65a was also confirmed, but could not be isolated.

[0419] Compound 65

[0420] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.21-1.27 (m, 1H), 2.05 (s, 3H), 2.10-2.19 (m, 2H), 2.28-2.43 (m, 2H), 2.39 (s, 3H), 2.49 (dd, J=1.1, 16.0 Hz, 1H), 2.79 (d, J=16.2 Hz, 1H), 2.88-2.97 (m, 2H), 3.07 (d, J=16.2 Hz, 1H), 3.14-3.22 (m, 1H), 3.54 (s, 3H), 5.20 (d, J=16.2 Hz, 1H), 5.28 (d, J=16.1 Hz, 1H), 6.38 (d, J=2.6 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 7.00 (d, J=8.4 Hz, 1H), 7.10-7.16 (m, 2H), 7.25-7.34 (m, 3H), 1H (OH) was not observed.

Example 44

Synthesis of (6R, 6aS,11aR)-10-benzyl-8,14-dimethyl-5,6,10,11-tetrahydro-6,11a- (epiminoethano) naphtho [2,1-f]indazole-2,6a (7H) -diol (Compound 66)

[0421] ##STR00067##

[0422] A reaction was carried out using the compound 65 (15.0 mg, 0.035 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.1 mL, 0.1 mmol) in the same manner as that of Example 11, and thus, the title compound 66 (4.4 mg, 30%) as colorless oil was obtained.

[0423] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 1.10-1.19 (m, 1H), 2.05 (s, 3H), 2.07-2.20 (m, 2H), 2.32-2.46 (m, 3H), 2.39 (s, 3H), 2.80 (d, J=16.6 Hz, 1H), 2.84-2.89 (m, 1H), 1.90-2.94 (m, 2H), 3.14 (d, J=18.0 Hz, 1H), 5.12 (d, J=15.9 Hz, 1H), 5.36 (d, J=15.9 Hz, 1H), 5.58 (d, J=2.3 Hz, 1H), 6.53 (dd, J=2.3, 8.3 Hz, 1H), 6.90 (d, J=8.3 Hz, 1H), 7.18-7.23 (m, 2H), 7.31-7.41 (m, 3H), 2H (OH×2) was not observed.

Example 45

Synthesis of (6R,6a5,11aR)-2-(benzyloxy)-14-(cyclopropylmethyl)-6a-hydroxy-9-phenyl-6,6a,7,7a,9,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 67) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-9-phenyl-6,6a,7,9,10,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 68)

[0424] ##STR00068##

[0425] Under an argon atmosphere, a 5.1 M copper(II) chloride aqueous solution (190 μL) was added to an ethyl acetate (5 mL) solution of the compound 52 (411.6 mg, 0.99 mmol) and phenyl isocyanate (140 mg, 1.18 mmol), and stirring was performed at room temperature for 10 hours. A saturated sodium carbonate aqueous solution was added to the reaction solution, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure, and thus, a crude product (584.4 mg) was obtained. A 6 M potassium hydroxide aqueous solution (700 μL) was added to a 2-propanol (10 mL) solution of the obtained crude purified product, and stirring was performed under an argon atmosphere at 80° C. for 7 hours. Water was added to the reaction solution, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was crudely purified by silica gel chromatography, and thus, a crude product (473.3 mg) was obtained. The obtained crude product and phenylhydrazine hydrochloride (255.1 mg, 1.764 mmol) were suspended in acetic acid (8 mL), and heating and reflux were performed under an argon atmosphere for 5 hours. After the reaction solution was concentrated under reduced pressure, a saturated sodium carbonate aqueous solution was added thereto, and extraction was performed with ethyl acetate. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel chromatography, and thus, the title compound 67 (337.8 mg, 64%) and the title compound 68 (14.8 mg, 3.4%) were obtained.

[0426] Compound 67

[0427] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.1-0.16 (m, 2H), 0.5-0.57 (m, 2H), 0.81-0.92 (m, 1H), 1.26-1.34 (m, 1H), 1.63 (dd, J=12.6, 12.6 Hz, 1H), 2.09-2.26 (m, 3H), 2.38 (dd, J=6.5, 12.6 Hz, 1H), 2.40 (dd, J=6.5, 12.6 Hz, 1H), 2.59-2.69 (m, 1H), 2.69 (dd, J=6.5, 18.7 Hz, 1H), 3.00 (d, J=14.1 Hz, 1H), 3.05 (d, J=18.7 Hz, 1H), 3.13 (d, J=6.4 Hz, 1H), 3.16 (d, J=14.1 Hz, 1H), 3.75 (dd, J=7.8, 12.4 Hz, 1H), 5.02 (s, 2H), 6.72 (dd, J=2.5, 8.4 Hz, 1H), 6.95 (d, J=8.4 Hz, 1H), 7.02 (d, J=2.5 Hz, 1H), 7.06-7.16 (m, 1H), 7.27-7.36 (m, 5H), 7.38-7.44 (m, 2H), 7.80-7.86 (m, 2H), 1H (OH) was not observed.

[0428] Compound 68

[0429] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.34-0.48 (m, 2H), 0.66-0.82 (m, 2H), 1.02-1.14 (m, 1H), 1.40-1.50 (m, 1H), 2.38-2.51 (m, 1H), 2.41 (d, J=16.4 Hz, 1H), 2.52 (d, J=16.4 Hz, 1H), 2.58-2.72 (m, 1H), 2.78-2.88 (m, 1H), 2.92 (d, J=16.6 Hz, 1H), 2.92-3.00 (m, 1H), 3.05-3.12 (m, 1H), 3.19 (d, J=16.6 Hz, 1H), 3.26-3.33 (m, 2H), 3.86 (br s, 1H), 6.51 (dd, J=2.5, 8.4 Hz, 1H), 6.77 (d, J=2.4 Hz, 1H), 7.01 (d, J=8.4 Hz, 1H), 7.12-7.20 (m, 1H), 7.32-7.41 (m, 1H), 3H (OH×2, NH) was not observed.

Example 46

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-9-phenyl-6,6a,7,9,10,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 68)

[0430] ##STR00069##

[0431] 10% palladium/carbon (33.8 mg) was added to methanol (5 mL) of the compound 67 (337.8 mg, 0.63 mmol), and stirring was performed under a hydrogen atmosphere at room temperature for 19 hours. The reaction solution was filtered through celite, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography, and thus, the title compound 68 (254.6 mg, 91%) was obtained.

[0432] NMR data identical to that of the compound 68 described in Example 45 was shown.

Example 47

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-9-isopropyl-6,6a,7,9,10,11-hexahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-8(5H)-one (Compound 69)

[0433] ##STR00070##

[0434] A reaction was carried out using the compound 52 (1.16 g, 2.78 mmol), phenyl isocyanate (0.41 g, 3.35 mmol), a 5.1 M copper(II) chloride aqueous solution (0.55 mL), and a 6 M potassium hydroxide aqueous solution (2 mL) in the same manner as that of Example 45, the obtained crude product was crudely purified by silica gel column chromatography, and thus, a crudely purified product (1.16 g) was obtained. A reaction was carried out using 308.8 mg of the crudely purified product (1.16 g) and isopropylhydrazine hydrochloride (130 mg, 1.15 mmol), the obtained crude product was crudely purified by silica gel column chromatography, and thus, the title compound 69 (107 mg, 35%) was obtained in the same manner as that of Example 46.

[0435] .sup.1H-NMR (400 MHz, CD3OD) δ (ppm): 0.19-0.29 (m, 2H), 0.53-0.67 (m, 2H), 0.89-1.40 (m, 1H), 1.26 (d, J=6.8 Hz, 3H), 1.30 (d, J=6.8 Hz, 3H), 1.30-1.37 (m, 1H), 2.19-2.30 (m, 1H), 2.26-2.36 (m, 1H), 2.29 (d, J=16.5 Hz, 1H), 2.39 (d, J=16.5 Hz, 1H), 2.55 (dd, J=6.6, 12.9 Hz, 1H), 2.59 (dd, J=6.6, 12.9 Hz, 1H), 2.69-2.77 (m, 1H), 2.82 (d, J=16.7 Hz, 1H), 3.39 (dd, J=6.7, 18.9 Hz, 1H), 3.10 (d, J=16.7 Hz, 1H), 3.15 (d, J=18.9 Hz, 1H), 3.43 (d, J=6.7 Hz, 1H), 4.50 (sept, J=6.8 Hz, 1H), 6.57 (dd, J=2.4, 8.3 Hz, 1H), 6.94 (d, J=2.4 Hz, 1H), 3H (OH×2, NH) was not observed.

Example 48

Synthesis of (6R,6a5,11aR)-10-cyclopropyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 70) and (6R,6aS,11aR)-9-cyclopropyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 71)

[0436] ##STR00071##

[0437] A reaction was carried out using the compound 3 (101.7 mg, 0.27 mmol), cyclohexylhydrazine hydrochloride (57.6 mg, 0.53 mmol), and methanesulfonic acid (42 μL, 0.64 mmol) in the same manner as that of Example 1, and thus, the title compound 70 (45.9 mg, 41%) as yellow-white amorphous and the title compound 71 (11.5 mg, 10%) as yellow-white amorphous were obtained.

[0438] Compound 70

[0439] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.50-0.59 (m, 2H), 0.83-0.94 (m, 1H), 0.97-1.11 (m, 3H), 1.14-1.22 (m, 1H), 1.33-1.38 (m, 1H), 1.99 (s, 3H), 2.11-2.26 (m, 2H), 2.37 (d, J=15.9 Hz, 1H), 2.41 (d, J=6.4 Hz, 2H), 2.42 (d, J=15.9 Hz, 1H), 2.62-2.68 (m, 1H), 2.89 (d, J=16.4 Hz, 1H), 2.94 (dd, J=6.7, 18.5 Hz, 1H), 3.10 (d, J=18.5 Hz, 1H), 3.21 (d, J=6.7 Hz, 1H), 3.26-3.33 (m, 1H), 3.36 (d, J=16.4 Hz, 1H), 3.71 (s, 3H), 4.68 (br s, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.70 (d, J=2.6 Hz, 1H), 6.99 (d, J=8.4 Hz, 1H).

[0440] Compound 71

[0441] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.20 (m, 2H), 0.50-0.58 (m, 2H), 0.83-0.99 (m, 4H), 1.08-1.15 (m, 1H), 1.29-1.35 (m, 1H), 2.07 (s, 3H), 2.11-2.23 (m, 2H), 2.36 (d, J=15.8 Hz, 1H), 2.40 (d, J=6.5 Hz, 2H), 2.46 (d, J=15.8 Hz, 1H), 2.59-2.69 (m, 1H), 2.92 (dd, J=6.8, 18.5 Hz, 1H), 2.93 (d, J=16.4 Hz, 1H), 3.10-3.22 (m, 1H), 3.11 (d, J=18.5 Hz, 1H), 3.19 (d, J=6.8 Hz, 1H), 3.28 (d, J=16.4 Hz, 1H), 3.70 (s, 3H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.84 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 49

Synthesis of (6R,6a5,11aR)-10-cyclobutyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 72) and (6R,6aS,11aR)-9-cyclobutyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 73)

[0442] ##STR00072##

[0443] A reaction was carried out using the compound 3 (97.2 mg, 0.25 mmol), cyclobutylhydrazine hydrochloride (61.5 mg, 0.38 mmol), and methanesulfonic acid (40 μL, 0.61 mmol) in the same manner as that of Example 1, and thus, the title compound 72 (78.7 mg, 72%) as yellow-white amorphous and the title compound 73 (13.9 mg, 13%) as yellow-white amorphous were obtained.

[0444] Compound 72

[0445] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.50-0.59 (m, 2H), 0.83-0.94 (m, 1H), 1.30-1.36 (m, 1H), 1.72-1.82 (m, 2H), 2.03 (s, 3H), 2.11-2.24 (m, 2H), 2.32-2.47 (m, 6H), 2.60-2.67 (m, 3H), 2.85 (d, J=16.2 Hz, 1H), 2.94 (dd, J=6.8, 18.4 Hz, 1H), 3.10 (d, J=18.4 Hz, 1H), 3.18 (d, J=16.2 Hz, 1H), 3.21 (d, J=6.8 Hz, 1H), 3.69 (s, 3H), 4.63-4.73 (m, 1H), 6.62-6.66 (m, 2H), 6.98 (d, J=9.1 Hz, 1H), 1H (OH) was not observed.

[0446] Compound 73

[0447] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.17 (m, 2H), 0.50-0.57 (m, 2H), 0.83-0.94 (m, 1H), 1.30-1.36 (m, 1H), 1.77-1.88 (m, 2H), 2.58 (s, 3H), 2.10-2.33 (m, 4H), 2.38 (d, J=15.7 Hz, 1H), 2.40 (d, J=6.6 Hz, 2H), 2.46 (d, J=15.7 Hz, 1H), 2.57-2.61 (m, 3H), 2.92 (dd, J=6.7, 18.4 Hz, 1H), 2.99 (d, J=16.3 Hz, 1H), 3.11 (d, J=18.4 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 3.35 (d, J=16.3 Hz, 1H), 3.70 (s, 3H), 4.45-4.55 (m, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 6.87 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 50

Synthesis of (6R,6aS,11aR)-10-cyclopentyl (cyclopropylmethyl)-2-methoxy-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 74) and (6R,6aS,11aR)-9-cyclopentyl-14-(cyclopropylmethyl)-2-methoxy-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 75)

[0448] ##STR00073##

[0449] A reaction was carried out using the compound 3 (128.3 mg, 0.33 mmol), cyclopentylhydrazine hydrochloride (81.0 mg, 0.47 mmol), and methanesulfonic acid (52 μL, 0.77 mmol) in the same manner as that of Example 1, and thus, the title compound 74 (86.1 mg, 58%) as white amorphous and the title compound 75 (19.9 mg, 13%) as yellow oil were obtained.

[0450] Compound 74

[0451] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.18 (m, 2H), 0.50-0.59 (m, 2H), 0.83-0.94 (m, 1H), 1.30-1.36 (m, 1H), 1.60-1.72 (m, 2H), 1.85-1.98 (m, 2H), 1.99-2.25 (m, 6H), 2.01 (s, 3H), 2.39 (d, J=16.5 Hz, 1H), 2.40 (d, J=6.7 Hz, 2H), 2.43 (d, J=16.5 Hz, 1H), 2.61-2.68 (m, 1H), 2.88 (d, J=16.0 Hz, 1H), 2.97 (dd, J=6.7, 18.4 Hz, 1H), 3.10 (d, J=18.4 Hz, 1H), 3.212 (d, J=16.0 Hz, 1H), 3.214 (d, J=6.7 Hz, 1H), 3.70 (s, 3H), 4.55 (dddd, J=8.0, 8.0, 8.0, 8.0 Hz, 1H), 4.66 (br s, 1H), 6.45 (dd, J=2.6, 8.3 Hz, 1H), 6.67 (d, J=2.6 Hz, 1H), 6.98 (d, J=8.3 Hz, 1H).

[0452] Compound 75

[0453] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.48-0.58 (m, 2H), 0.83-0.95 (m, 1H), 1.28-1.36 (m, 1H), 1.53-1.66 (m, 2H), 1.82-2.08 (m, 6H), 1.99 (s, 3H), 2.11-2.25 (m, 2H), 2.39 (d, J=15.6 Hz, 1H), 2.40 (d, J=6.4 Hz, 2H), 2.47 (d, J=15.6 Hz, 1H), 2.60-2.67 (m, 1H), 2.92 (dd, J=6.7, 18.5 Hz, 1H), 2.97 (d, J=16.1 Hz, 1H), 3.11 (d, J=18.5 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 3.31 (d, J=16.1 Hz, 1H), 3.69 (s, 3H), 4.35 (dddd, J=7.8, 7.8, 7.8, 7.8 Hz, 1H), 6.64 (dd, J=2.6, 8.4 Hz, 1H), 6.85 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 51

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methoxy-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 76) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(tetrahydro-2H-pyran-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 77)

[0454] ##STR00074##

[0455] Under an argon atmosphere, tert-butyl 2-(tetrahydro-2H-pyran-4-yl)hydrazine-1-carboxylate (synthesized by a method described in J. Med. Chem., 2007, 50, 4789-4792) (116.7 mg, 0.54 mmol) and methanesulfonic acid (60 μL, 0.89 mmol) were added to an ethanol (4.5 mL) solution of the compound 3 (112.6 mg, 0.54 mmol), and heating and reflux were performed for 14.5 hours. After cooling, the reaction solution was concentrated under reduced pressure, a saturated sodium bicarbonate aqueous solution was added thereto, and extraction was performed with chloroform. After combined organic layers were washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, the title compound 76 (77.2 mg, 57%) as yellow-white amorphous and the title compound 77 (18.3 mg, 13%) as yellow-white amorphous were obtained.

[0456] Compound 76

[0457] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.50-0.50 (m, 2H), 0.83-0.94 (m, 1H), 1.31-1.37 (m, 1H), 1.83-1.92 (m, 2H), 2.01 (s, 3H), 2.11-2.40 (m, 5H), 2.42 (d, J=6.6 Hz, 2H), 2.44 (d, J=16.3 Hz, 1H), 2.61-2.68 (m, 1H), 2.90 (d, J=15.7 Hz, 1H), 2.95 (dd, J=6.8, 18.6 Hz, 1H), 3.11 (d, J=18.6 Hz, 1H), 3.215 (d, J =15.7 Hz, 1H), 3.217 (d, J=6.8 Hz, 1H), 3.50-3.61 (m, 2H), 3.12 (s, 3H), 4.14 (br d, J=11.9 Hz, 2H), 4.23 (dddd, J=4.1, 4.1, 11.8, 11.8 Hz, 1H), 4.68 (br s, 1H), 6.652 (dd, J=2.6, 9.1 Hz, 1H), 6.654 (d, J=2.6, 1H), 7.00 (d, J=9.1 Hz, 1H).

[0458] Compound 77

[0459] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.19 (m, 2H), 0.49-0.59 (m, 2H), 0.83-0.93 (m, 1H), 1.29-1.36 (m, 1H), 1.66-1.79 (m, 2H), 2.01 (s, 3H), 2.10-2.31 (m, 4H), 2.40 (d, J=15.7 Hz, 1H), 2.41 (d, J=6.4 Hz, 2H), 2.47 (d, J=15.7 Hz, 1H), 2.61-2.67 (m, 1H), 2.92 (dd, J=6.7, 18.5 Hz, 1H), 2.97 (d, J=16.2 Hz, 1H), 3.12 (d, J=18.5 Hz, 1H), 3.20 (d, J=6.7 Hz, 1H), 3.31 (d, J=16.2 Hz, 1H), 3.41-3.52 (m, 2H), 3.69 (s, 3H), 3.98-4.11 (m, 3H), 6.65 (d, J=2.6, 8.4 Hz, 1H), 6.85 (d, J=2.6 Hz, 1H), 6.98 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 52

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(tetrahydro-2H-thiopyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 78) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(tetrahydro-2H-thiopyran-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 79)

[0460] ##STR00075##

[0461] A reaction was carried out using ethanol (7.0 mL) of the compound 3 (202.1 mg, 0.53 mmol), tert-butyl 2-(tetrahydro-2H-thiopyran-4-yl)hydrazin-1-carboxylate (synthesized by a method described in J. Med. Chem., 2004, 47, 2180-2193) (183.7 mg, 0.79 mmol), and methanesulfonic acid (103 μL, 1.52 mmol) in the same manner as that of Example 51, and thus, the title compound 78 (110.1 mg, 43.6%) as white amorphous and the title compound 79 (51.0 mg, 20.2%) as white amorphous were obtained.

[0462] Compound 78

[0463] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.18 (m, 2H), 0.51-0.60 (m, 2H), 0.83-0.94 (m, 1H), 1.31-1.36 (m, 1H), 2.00 (s, 3H), 2.11-2.41 (m, 6H), 2.37 (d, J=16.5 Hz, 1H), 2.41 (d, J=6.5 Hz, 2H), 2.44 (d, J=16.5 Hz, 1H), 2.62-2.68 (m, 1H), 2.76-2.99 (m, 6H), 3.10 (d, J=18.5 Hz, 1H), 3.20 (d, J=15.9 Hz, 1H), 3.21 (d, J=6.3 Hz, 1H), 3.70 (s, 3H), 4.00 (dddd, J=3.7, 3.7, 11.6, 11.6 Hz, 1H), 4.67 (br s, 1H), 6.63-6.67 (m, 2H), 7.00 (d, J=9.0 Hz, 1H).

[0464] Compound 79

[0465] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.11-0.17 (m, 2H), 0.51-0.57 (m, 2H), 0.83-0.92 (m, 1H), 1.29-1.35 (m, 1H), 1, 98 (s, 3H), 2.02-2.34 (m, 6H), 2.38 (d, J=15.8 Hz, 1H), 2.40 (d, J=6.4 Hz, 2H), 2.45 (d, J=15.8 Hz, 1H), 2.61-2.66 (m, 1H), 2.69-2.84 (m, 4H), 2.91 (dd, J=6.7, 18.4 Hz, 1H), 2.96 (d, J=16.2 Hz, 1H), 3.12 (d, J=18.4 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 3.30 (d, J=16.2 Hz, 1H), 3.70 (s, 3H), 3.79 (dddd, J=3.4, 3.4, 11.6, 11.6 Hz, 1H), 6.65 (dd, J=2.6, 8.4 Hz, 1H), 6.84 (d, J=2.6 Hz, 1H), 6.97 (d, J=8.4 Hz, 1H), 1H (OH) was not observed.

Example 53

Synthesis of a mixture of (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-10-(1-methylpiperidin-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 80) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-2-methoxy-8-methyl-9-(1-methylpiperidin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-6a(7H)-ol (Compound 81)

[0466] ##STR00076##

[0467] A reaction was carried out using the compound 3 (116.2 mg, 0.30 mmol), tert-butyl 2-(1-methylpiperidin-4-yl)hydrazine-1-carboxylate (synthesis by a method described in WO 2016/44666 A1) (108.5 mg, 0.47 mmol), and methanesulfonic acid (90 μL, 1.3 mmol) in the same manner as that of Example 51, and thus, a mixture (60.8 mg, 42%) of the title compound 80 and the title compound 81 as white amorphous was obtained.

[0468] Mixture of compound 80 and compound 81

[0469] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.18 (m, 2H), 0.48-0.60 (m, 2H), 0.82-0.94 (m, 1H), 1.28-1.35 (m, 1H), 1.63-2.50 (m, 12H), 1.99 (s, 3H), 2.39 (s, 1.8H), 2.41 (s, 1.2H), 2.59-2.69 (m, 1H), 2.87-3.10 (m, 4H), 3.10 (d, J=18.4 Hz, 0.6H), 3.13 (d, J=18.5 Hz, 0.4H), 3.19 (d, J=7.8 Hz, 0.6H), 3.21 (d, J=7.2 Hz, 0.4H), 3.27 (d, J=16.1 Hz, 0.4H), 3.29 (d, J=16.2 Hz, 0.6H), 3.69 (s, 3H), 3.78-3.88 (m, 0.4H), 4.01-4.12 (m, 0.6H), 4.67 (br s, 1H), 6.62-9.68 (m, 1.6H), 6.85 (d, J=2.6 Hz, 0.4H), 6.97 (d, J=8.1 Hz, 0.6H), 6.99 (d, J=7.9 Hz, 0.4H).

Example 54

Synthesis of (6R,6a5,11aR)-10-cyclopropyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 82)

[0470] ##STR00077##

[0471] A reaction was carried out using the compound 70 (45.9 mg, 0.11 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.33 mL, 0.33 mmol) in the same manner as that of Example 11, and thus, the title compound 82 (11.5 mg, 26%) as white amorphous was obtained.

[0472] Compound 82

[0473] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.49-0.60 (m, 3H), 0.68-0.96 (m, 4H), 1.26-1.33 (m, 1H), 1.97 (s, 3H), 2.11-2.23 (m, 2H), 2.34 (d, J=15.9 Hz, 1H), 2.40 (d, J=6.5 Hz, 2H), 2.45 (d, J=15.9 Hz, 1H), 2.59-2.68 (m, 1H), 2.76 (d, J=16.2 Hz, 1H), 2.90 (dd, J=6.8, 18.5 Hz, 1H), 2.95-3.33 (m, 1H), 3.07 (d, J=18.5 Hz, 1H), 3.19 (d, J=6.8 Hz, 1H), 3.22 (d, J=16.2 Hz, 1H), 6.51 (dd, J=2.4, 8.3 Hz, 1H), 6.72 (d, J=2.4 Hz, 1H), 6.86 (d, J=8.3 Hz, 1H), 2H (OH×2) was not observed.

Example 55

Synthesis of (6R,6aS,11aR)-9-cyclopropyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 83)

[0474] ##STR00078##

[0475] A reaction was carried out using the compound 71 (11.3 mg, 0.027 mmol), and a 1.0 M dichloromethane solution of boron tribromide (81 μL, 0.081 mmol) in the same manner as that of Example 11, and thus, the title compound 83 (4.9 mg, 45%) as yellow oil was obtained.

[0476] Compound 83

[0477] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.18 (m, 2H), 0.49-0.58 (m, 2H), 0.83-0.95 (m, 4H), 1.04-1.11 (m, 1H), 1.29-1.34 (m, 1H), 2, 07 (s, 3H), 2.11-2.26 (m, 2H), 2.37 (d, J=15.9 Hz, 1H), 2.41 (d, J=6.5 Hz, 2H), 2.46 (d, J=15.9 Hz, 1H), 2.62-2.69 (m, 1H), 2.90 (dd, J=6.7, 18.3 Hz, 1H), 2.94 (d, J=16.2 Hz, 1H), 3.09-3.17 (m, 1H), 3.11 (d, J=18.3 Hz, 1H), 3.19 (d, J=6.7 Hz, 1H), 3.28 (d, J=16.2 Hz, 1H), 6.62 (dd, J=2.5, 8.2 Hz, 1H), 6.86 (d, J=2.5 Hz, 1H), 6.93 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 56

Synthesis of (6R,6a5,11aR)-10-cyclobutyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 84)

[0478] ##STR00079##

[0479] A reaction was carried out using the compound 72 (78.7 mg, 0.18 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.55 mL, 0.55 mmol) in the same manner as that of Example 11, and thus, the title compound 84 (54.3 mg, 71%) as white amorphous was obtained.

[0480] Compound 84

[0481] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.20 (m, 2H), 0.48-0.60 (m, 2H), 0.81-0.95 (m, 1H), 1.27-1.35 (m, 1H), 1.56-1.77 (m, 2H), 1.99 (s, 3H), 2.12-2.33 (m, 4H), 2.34-2.70 (m, 7H), 2.79 (d, J=16.1 Hz, 1H), 2.91 (dd, J=6.5, 18.5 Hz, 1H), 3.07 (d, J=18.5 Hz, 1H), 3.11 (d, J=16.1 Hz, 1H), 3.26 (d, J=6.5 Hz, 1H), 4.55 (dddd, J=8.4, 8.4, 8.4, 8.4 Hz, 1H), 6.52 (dd, J=2.1, 8.2 Hz, 1H), 6.61 (d, J=2.1 Hz, 1H), 6.86 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 57

Synthesis of (6R,6aS,11aR)-9-cyclobutyl (cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 85)

[0482] ##STR00080##

[0483] A reaction was carried out using the compound 73 (13.9 mg, 0.032 mmol), and a 1.0 M dichloromethane solution of boron tribromide (96 μL, 0.096 mmol) in the same manner as that of Example 11, and thus, the title compound 85 (9.7 mg, 72%) as yellow oil was obtained.

[0484] Compound 85

[0485] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.10-0.20 (m, 2H), 0.49-0.60 (m, 2H), 0.83-0.98 (m, 1H), 1.23-1.33 (m, 1H), 1.60-1.77 (m, 2H), 1.96 (s, 3H), 2.08-2.30 (m, 4H), 2.38 (d, J=15.8 Hz, 1H), 2.44 (d, J=6.7 Hz, 2H), 2.45 (d, J=15.9 Hz, 1H), 2.46-2.71 (m, 3H), 2.91 (dd, J=6.5, 18.5 Hz, 1H), 2.97 (d, J=16.3 Hz, 1H), 3.10 (d, J=18.5 Hz, 1H), 3.23 (d, J=6.5 Hz, 1H), 3.30 (d, J=16.3 Hz, 1H), 4.49 (dddd, J=8.4, 8.4, 8.4, 8.4 Hz, 1H), 6.61 (dd, J=2.4, 8.2 Hz, 1H), 6.81 (d, J=2.4 Hz, 1H), 6.92 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 58

Synthesis of (6R,6a5,11aR)-10-cyclopentyl-14-(cyclopropylmethyl)-8-methyl-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 86)

[0486] ##STR00081##

[0487] A reaction was carried out using the compound 74 (78.4 mg, 0.18 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.53 mL, 0.53 mmol) in the same manner as that of Example 11, and thus, the title compound 86 (48.8 mg, 64%) as white amorphous was obtained.

[0488] Compound 86

[0489] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.19 (m, 2H), 0.48-0.59 (m, 2H), 0.81-0.94 (m, 1H), 1.27-1.38 (m, 1H), 1.42-1.59 (m, 2H), 1.69-1.83 (m, 2H), 1.88-2.05 (m, 4H), 1.97 (s, 3H), 2.11-2.22 (m, 2H), 2.37 (d, J=15.8 Hz, 1H), 2.40 (d, J=6.6 Hz, 2H), 2.46 (d, J=15.8 Hz, 1H), 2.58-2.69 (m, 1H), 2.82 (d, J=16.1 Hz, 1H), 2.91 (dd, J=6.6, 18.5 Hz, 1H), 3.07 (d, J=18.5 Hz, 1H), 3.15 (d, J=16.1 Hz, 1H), 3.20 (d, J=6.6 Hz, 1H), 4.45 (dddd, J=8.0, 8.0, 8.0, 8.0 Hz, 1H), 6.50 (dd, J=2.3, 8.3 Hz, 1H), 6.63 (d, J=2.3 Hz, 1H), 6.85 (d, J=8.3 Hz, 1H), 2H (OH×2) was not observed.

Example 59

Synthesis of (6R,6aS,11aR)-9-cyclopentyl-14-(cyclopropylmethyl)-8-methyl-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 87)

[0490] ##STR00082##

[0491] A reaction was carried out using the compound 75 (98.1 mg, 0.22 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.66 mL, 0.66 mmol) in the same manner as that of Example 11, and thus, the title compound 87 (51.9 mg, 55%) as white amorphous was obtained.

[0492] Compound 87

[0493] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm) : 0.10-0.20 (m, 2H), 0.49-0.58 (m, 2H), 0.83-0.95 (m, 1H), 1.25-1.32 (m, 1H), 1.38-1.58 (m, 2H), 1.58-2.01 (m, 6H), 1.99 (s, 3H), 2.10-2.25 (m, 2H), 2.38 (d, J=15.8 Hz, 1H), 2.40 (d, J=6.6 Hz, 2H), 2.46 (d, J=15.8 Hz, 1H), 2.61-2.68 (m, 1H), 2.88 (dd, J=6.8, 18.5 Hz, 1H), 2.97 (d, J=16.2 Hz, 1H), 3.11 (d, J=18.5 Hz, 1H), 3.18 (d, J=6.8 Hz, 1H), 3.30 (d, J=16.2 Hz, 1H), 4.31 (dddd, J=8.1, 8.1, 8.1, 8.1 Hz, 1H), 6.61 (dd, J=2.5, 8.2 Hz, 1H), 6.83 (d, J=2.5 Hz, 1H), 6.92 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 60

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(tetrahydro-2H-pyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 88)

[0494] ##STR00083##

[0495] A reaction was carried out using the compound 76 (77.2 mg, 0.17 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.60 mL, 0.60 mmol) in the same manner as that of Example 11, and thus, the title compound 88 (64.1 mg, 86%) as white amorphous was obtained.

[0496] Compound 88

[0497] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.19 (m, 2H), 0.50-0.59 (m, 2H), 0.82-0.93 (m, 1H), 1.31-1.37 (m, 1H), 1.79-1.89 (m, 2H), 2.00 (s, 3H), 2.12-2.35 (m, 4H), 2.38 (d, J=16.2 Hz, 1H), 2.40 (d, J=6.8 Hz, 2H), 2.45 (d, J=16.2 Hz, 1H), 2.62-2.68 (m, 1H), 2.88 (d, J=16.1 Hz, 1H), 2.93 (dd, J=6.7, 18.4 Hz, 1H), 3.09 (d, J=18.4 Hz, 1H), 3.18 (d, J=16.1 Hz, 1H), 3.21 (d, J=6.7 Hz, 1H), 3.45-3.57 (m, 2H), 4.04-4.14 (m, 2H), 4.15-4.25 (m, 1H), 6.54 (dd, J=2.5, 8.2 Hz, 1H), 6.61 (d, J=2.5 Hz, 1H), 6.92)d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 61

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl) methyl-10-(tetrahydro-2H-thiopyran-4-yl)-5,6,10,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 89)

[0498] ##STR00084##

[0499] A reaction was carried out using the compound 78 (87.2 mg, 0.18 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.55 mL, 0.55 mmol) in the same manner as that of Example 11, and thus, the title compound 89 (66.6 mg, 79%) as pale yellow amorphous was obtained.

[0500] Compound 89

[0501] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.50-0.59 (m, 2H), 0.82-0.93 (m, 1H), 1.30-1.38 (m, 1H), 1.98 (s, 3H), 2.10-2.32 (m, 6H), 2.37 (d, J=15.9 Hz, 1H), 2.40 (d, J=6.5 Hz, 2H), 2.45 (d, J=15.9 Hz, 1H), 2.61-2.81 (m, 5H), 2.85 (d, J=16.0 Hz, 1H), 2.92 (dd, J=6.7, 18.6 Hz, 1H), 3.08 (d, J=18.6 Hz, 1H), 3.16 (d, J=16.0 Hz, 1H), 3.20 (d, J=6.7 Hz, 1H), 3.94 (dddd, J=3.5, 3.5, 11.6, 11.6 Hz, 1H), 6.52 (dd, J=2.4, 8.2 Hz, 1H), 6.61 (d, J=2.4 Hz, 1H), 6.88 (d, J=8.2 Hz, 1H), 2H (OH×2) was not observed.

Example 62

Synthesis of (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-(tetrahydro-2H-thiopyran-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 90)

[0502] ##STR00085##

[0503] A reaction was carried out using the compound 79 (34.9 mg, 0.073 mmol), and a 1.0 M dichloromethane solution of boron tribromide (0.22 mL, 0.22 mmol) in the same manner as that of Example 11, and thus, the title compound 90 (21.3 mg, 63%) as pale yellow amorphous was obtained.

[0504] Compound 90

[0505] .sup.1H-NMR (400 MHz, DMSO-d.sub.6) δ (ppm): 0.06-0.14 (m, 2H), 0.41-0.51 (m, 2H), 0.80-0.88 (m, 1H), 1.13 (br d, J=11.1 Hz, 1H), 1.93-2.10 (m, 7H), 1.95 (s, 3H), 2.21 (d, J=15.7 Hz, 1H), 2.29-2.38 (m, 3H), 2.52-2.58 (m, 1H), 2.60-2.69 (m, 3H), 2.71-2.85 (m, 3H), 2.99 (d, J=18.7 Hz, 1H), 3.04 (d, J=16.1 Hz, 1H), 3.06-3.12 (m, 1H), 3.90-3.99 (m, 1H), 4.45 (br s, 1H), 6.43 (dd, J=2.4, 8.2 Hz, 1H), 6.60 (d, J=2.4 Hz, 1H), 6.84 (d, J=8.2 Hz, 1H).

Example 63

Synthesis of (6R,6a5,11aR)-14-(cyclopropylmethyl)-8-methyl-10-(1-methylpiperidin-4-yl)-5,6,10,11-tetrahydro- 6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 91) and (6R,6aS,11aR)-14-(cyclopropylmethyl)-8-methyl-9-(1-methylpiperidin-4-yl)-5,6,9,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazole-2,6a(7H)-diol (Compound 92)

[0506] ##STR00086##

[0507] A reaction was carried out using a mixture (60.8 mg, 0.064 mmol) of the compounds 80 and 81, and a 1.0 M dichloromethane solution of boron tribromide (0.45 mL, 0.45 mmol) in the same manner as that of Example 11, and thus, the title compound 91 (17.4 mg, 30%) as yellow-white amorphous and the title compound 92 (13.1 mg, 22%) as yellow-white amorphous were obtained.

[0508] Compound 91

[0509] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.09-0.18 (m, 2H), 0.48-0.58 (m, 2H), 0.82-0.93 (m, 1H), 1.24-1.33 (m, 1H), 1.60-1.80 (m, 2H), 1.79 (s, 3H), 1.98-2.23 (m, 6H), 2.30 (s, 3H), 2.34 (d, J=15.8 Hz, 1H), 2.39 (d, J=6.5 Hz, 2H), 2.43 (d, J=15.8 Hz, 1H), 2.60-2.67 (m, 1H), 2.88 (dd, J=6.8, 18.4 Hz, 1H), 2.91-3.02 (m, 2H), 2.94 (d, J=16.3 Hz, 1H), 3.10 (d, J=18.4 Hz, 1H), 3.16 (d, J=6.8 Hz, 1H), 3.25 (d, J=16.3 Hz, 1H), 3.80-3.89 (m, 1H), 4.69 (br s, 1H), 6.60 (dd, J=2.5, 8.2 Hz, 1H), 6.77 (d, J=2.5 Hz, 1H), 6.91 (d, J=8.2 Hz, 1H), 1H (OH) was not observed.

[0510] Compound 92

[0511] .sup.1H-NMR (400 MHz, CDCl.sub.3) δ (ppm): 0.08-0.17 (m, 2H), 0.48-0.58 (m, 2H), 0.80-0.91 (m, 1H), 1.08-1.14 (m, 1H), 1.89-2.00 (m, 2H), 1.97 (s, 3H), 2.04-2.20 (m, 4H), 2.23-2.42 (m, 5H), 2.34 (s, 3H), 2.45 (d, J=15.9 Hz, 1H), 2.53-2.60 (m, 1H), 2.81 (d, J=16.1 Hz, 1H), 2.91 (dd, J=6.6, 18.5 Hz, 1H), 2.95-3.04 (m, 2H), 3.06 (d, J=18.5 Hz, 1H), 3.17 (d, J=6.6 Hz, 1H), 3.25 (d, J=16.1 HZ, 1H), 4.08 (dddd, J=4.2, 4.2, 11.8, 11.8 Hz, 1H), 4.62 (br s, 1H), 6.52 (dd, J=1.9, 8.2 Hz, 1H), 6.76 (br d, J=1.9 Hz, 1H), 6.90 (d, J=8.2 Hz, 1H), 1H (OH) was not observed.

Example 64

Synthesis of a mixture of (1S,4S)-4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)tetrahydro-2H-thiopyran 1-oxide (Compound 93) and (1S,4R)-4-((6R,6aS,11aR)-14-(cyclopropylmethyl)-2,6a-dihydroxy-8-methyl-6,6a,7,11-tetrahydro-6,11a-(epiminoethano)naphtho[2,1-f]indazol-10(5H)-yl)tetrahydro-2H-thiopyran 1-oxide (Compound 94)

[0512] ##STR00087##

[0513] Under an argon atmosphere, m-chloroperbenzoic acid (77%, 16.0 mg, 0.071 mmol) was added to a dichloromethane (3.0 mL) solution of the compound 89 (29.2 mg, 0.063 mmol) at room temperature, and stirring was performed at room temperature for 3 hours. A saturated thiosulfate aqueous sodium was added to the reaction solution under ice cooling, and stirring was performed. After confirming the disappearance of m-chloroperbenzoic acid on potassium iodide starch paper, a saturated sodium bicarbonate aqueous solution was added, and extraction was performed with chloroform. After an organic layer was washed with saturated brine and dried with anhydrous sodium sulfate, concentration was performed under reduced pressure. The obtained crude product was purified by silica gel column chromatography, and thus, a mixture (18.8 mg, 62%) of the title compound 93 and the title compound 94 as colorless oil was obtained.

[0514] Mixture of Compound 93 and Compound 94

[0515] .sup.1H-NMR (400 MHz, acetone-d.sub.6) δ (ppm): 0.13-0.23 (m, 2H), 0.48-0.59 (m, 2H), 0.85-0.97 (m, 1H), 1.25-1.33 (m, 1H), 1.91 (s, 1.8H), 1.92 (s, 1.2H), 2.12-2.25 (m, 2.6H), 2.31 (d, J=15.9 Hz, 1H), 2.36-2.52 (m, 3.6H), 2.62-2.72 (m, 1H), 2.75-3.12 (m, 7.8H), 3.14 (d, J=18.5 Hz, 1H), 3.23 (d, J=6.6 Hz, 1H), 3.34 (d, J=16.1 Hz, 0.6H), 3.36 (d, J=16.0 Hz, 0.4H), 3.39-3.48 (m, 1H), 3.58-3.66 (m, 1H), 4.44-4.53 (m, 0.4H), 4.58-4.66 (m, 0.6H), 6.57 (dd, J=2.4, 8.2 Hz, 0.4H), 6.58 (dd, J=2.4, 8.2 Hz, 0.6H), 6.79 (d, J=2.4 Hz, 0.6H), 6.82 (d, J=2.4 Hz, 0.4H), 6.92 (d, J=8.2 Hz, 1H), 1H (OH) was not observed.

Example 65

[0516] Opioid Receptor Function Test

[0517] Functional activity of the compound provided by the present invention on μ, δ, and κ opioid receptors was examined.

[0518] Method: Using a Lance Ultra cAMP kit (Perkin Elmer), the functional activity was examined by a predetermined method. In evaluation of agonist activity, CHO cells expressing each of human opioid receptors (δ, μ, and κ: accession numbers and catalog numbers are described below) were reacted with a test compound in an assay buffer (1× HBSS, 1 M HEPES, pH 7.4, 250 mM isobutylmethylxanthine (IBMX), 7.5% BSA) in the presence of 10 μM forskolin for 30 minutes. Subsequently, a cAMP detection reagent in the kit was added. One hour later, time-resolved fluorescence measurement was performed using an EnVision plate reader (Perkin Elmer). The test compound and each control drug (δ: SNC 80, μ: DAMGO, κ: U-69593) were evaluated in a concentration range of 10.sup.−12 to 10.sup.−5 M. A dose reaction curve of the test compound was determined from a fluorescence value at 665 nm, and an EC.sub.50 value and an E.sub.max value were calculated. The E.sub.max value was determined as a ratio of a maximum reaction of the test compound when a maximum reaction of each control drug was taken as 100%.

[0519] SNC80: (+)-4-[(αR)-α-((2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N,N-diethylbenzamide

[0520] DAMGO:[D-Ala.sup.2,N-MePhe.sup.4,Gly-ol]enkephalin

[0521] U-69593: (+)-(5α,7α,8β)-N-methyl-N-[7-(1-pyrrolidinyl)-1-oxaspiro[4.5]deca-8-yl]benzeneacetamide

[0522] Accession number and catalog number

[0523] δ: Catalog No. CT6607, accession No. NM_000911.2

[0524] μ: Catalog No. CT6605, accession No. NM_000914 [0525] κ: Catalog No. CT6606, accession No. NM_000912

[0526] (ChanTest Corporation)

TABLE-US-00001 TABLE 1 Compound EC.sub.50: nM (E.sub.max: %) number δ receptor μ receptor κ receptor 20 0.89 (86) 8.1 (10)  8.7 (12)  21 0.76 (81) N.C. N.C. 22 0.18 (107) 15 (15) 13 (35) 23 0.48 (95) N.C. N.C. 24 0.14 (108) N.C. 17 (23) 27 0.83 (51) N.C. N.C. 28 0.33 (101) N.C. 58 (15) 30, 31 0.70 (86) N.C. N.C. 32 0.089 (111) N.C. N.C. 33 0.14 (108) N.C. 44 (13) 34, 35 1.3 (42) N.C. N.C. 36 3.4 (65) N.C. N.C. 42 1.0 (90) N.C. N.C. 45 0.75 (72) N.C. N.C. 46 0.17 (105) N.C. N.C. 49 0.50 (73) N.C. N.C. 51 0.94 (54) N.C. N.C. 61 15 (91) 257 (63)  1033 (14)  68 1.4 (100) N.C. N.C. 82 0.93 (39) N.C. N.C. 83 0.13 (99) 11 (16) 50 (30) 84 0.34 (95) N.C. N.C. 85 0.092 (104) 16 (26) 17 (25) 86 0.12 (101) N.C. N.C. 87 0.11 (106) 28 (24) 59 (30) 88 0.086 (113) N.C. N.C. 89 0.069 (112) N.C. N.C. 90 0.092 (116) N.C. 8.1 (15)  91 0.23 (112) 32 (12) 15 (25) 92 0.51 (103) 52 (17) 16 (20) N.C.: EC.sub.50 value was not calculated as no dose response was obtained.

[0527] As shown in Table 1, it was confirmed that the compound of the present invention showed high selectivity for the opioid δ receptor, and a large number of compounds had strong agonist activity. Since the compound of the present invention has no agonist activity for μ and κ receptors or shows only weak agonist activity, reduction of side effects is expected.

Example 66

[0528] Ether-a-Go-Go Related Gene (hERG) Potassium Channel Inhibition Test

[0529] A test was performed using hERG channel stably expressing CHO cells (purchased from Channelopathy Foundation) with a Port-a-Patch auto patch clamping device (Nanion Technologies). A membrane potential of the cells was held at −80 mV, and then a test pulse of −50 mV for 1.5 seconds was applied at a frequency of once every 10 seconds following a depolarization pulse of +20 mV for 1.5 seconds. An hERG current was confirmed by a tail current induced by the test pulse. A test compound was dissolved in an extracellular solution (13,740 mM NaCl, 4 mM KCl, 1.82 mM CaCl.sub.2, 1 mM MgCl.sub.2, 105 mM D(+)-glucose, 10 mM HEPES, pH 7.4) and perfused at room temperature for 5 minutes. An inhibition ratio was determined from a ratio of a tail current value after application of the compound when a maximum tail current value before application of the compound was taken as 100%. For the test, cells having a peak current value of the tail current of 300 pA or more, tail current run-down of less than 10% of a current initial value, and a leak current of less than 200 pA were used.

[0530] For example, the compound 22, the compound 23, the compound 24, and the compound 44 showed only weak inhibitory effect. It is presumed from this that the compound of the present invention has a low risk of delaying ventricular repolarization and prolonging QT interval in humans.