Thienopyridine derivatives containing unsaturated aliphatic olefinic bond, preparation method and use thereof
11466025 · 2022-10-11
Assignee
Inventors
- Changjiang Huang (Tianjin, CN)
- Shijun Zhang (Tianjin, CN)
- Lingjun Li (Tianjin, CN)
- Lei Liu (Tianjin, CN)
- Yuquan Li (Tianjin, CN)
- Jing Yuan (Tianjin, CN)
- Hui Yan (Tianjin, CN)
- Songhui Wang (Tianjin, CN)
- Xuemin Zheng (Tianjin, CN)
- Qunchao Wei (Tianjin, CN)
- Xuyuan Liu (Tianjin, CN)
- Wei Wei (Tianjin, CN)
- Weiren Xu (Tianjin, CN)
- Lida Tang (Tianjin, CN)
- Meixiang Zou (Tianjin, CN)
Cpc classification
A61P9/10
HUMAN NECESSITIES
International classification
A61P7/02
HUMAN NECESSITIES
A61P9/10
HUMAN NECESSITIES
Abstract
The present invention provides a compound having a structure of formula (I), a preparation method and use thereof, and a pharmaceutical composition containing the compound, wherein R is methyl, ethyl, propyl, vinyl or propenyl. The present invention also provides a crystalline form of the compound, a preparation method and use of the crystalline form, and a pharmaceutical composition comprising the crystalline form. The compounds having the structure of formula (I) of the present invention are present in a solid form, which not only can solve the problem of clopidogrel resistance, but also can solve the problem of severe hemorrhagic side effect and poor safety of some drugs, as well as the problem of poor stability of existing compounds. It can be developed into an ADP receptor antagonist antiplatelet agent with clear therapeutic effect, no resistance and better stability. ##STR00001##
Claims
1. A compound having a structure of formula (I): ##STR00025## wherein R is methyl, ethyl, propyl, vinyl or propenyl.
2. The compound according to claim 1, which is selected from the following compounds: I-1: methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate; I-2: methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate; I-3: methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2,4-pentadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate; I-4: methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-pentenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate; and I-5: methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-hexenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate.
3. A method for preparing the compound having the structure of formula (I) according to claim 1, comprising the steps of: reacting a compound having a structure of formula (II) with a corresponding acid, acyl chloride or acid anhydride in the presence of a base to prepare the compound having the structure of formula (I), wherein R is as defined in claim 1: ##STR00026##
4. The method according to claim 3, wherein the compound having the structure of formula (II) is prepared by reacting a compound having a structure of formula (III) with a compound having a structure of formula (IV) in the presence of a base: ##STR00027##
5. A pharmaceutical composition comprising the compound having the structure of formula (I) according to claim 1 and a pharmaceutically acceptable carrier or excipient.
6. The pharmaceutical composition according to claim 5, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
7. The compound according to claim 1, which is a crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1), wherein said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.31, 16.13, 20.24 and 21.58 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
8. The crystal form A according to claim 7, characterized in that, said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.31, 10.70, 12.43, 16.13, 17.47, 20.24, 21.58, 25.83 and 27.09 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
9. A pharmaceutical composition comprising the crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1) according to claim 7 and a pharmaceutically acceptable carrier or excipient.
10. The pharmaceutical composition according to claim 9, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
11. The compound according to claim 1, which is a crystalline form A of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2), wherein said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.52, 16.73, 19.43 and 22.38 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being 0.2.
12. The crystal form A according to claim 11, characterized in that, said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.52, 11.10, 12.30, 16.73, 18.86, 19.43, 22.38, 23.40 and 23.80 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
13. A pharmaceutical composition comprising the crystalline form A of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2) according to claim 11 a pharmaceutically acceptable carrier or excipient.
14. The pharmaceutical composition according to claim 13, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
15. The compound according to claim 1, which is a crystalline form B of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2), wherein said crystalline form B has an X-ray powder diffraction pattern having diffraction peaks at 4.31, 8.66, 13.01, 17.42 and 19.52 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being 0.2.
16. The crystal form B according to claim 15, characterized in that, said crystalline form B has an X-ray powder diffraction pattern having diffraction peaks at 4.31, 8.66, 10.29, 10.94, 13.01, 17.42, 19.52, 23.17, 24.22 and 24.92 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
17. A pharmaceutical composition comprising the crystalline form B of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2) according to claim 15 and a pharmaceutically acceptable carrier or excipient.
18. The pharmaceutical composition according to claim 17, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
19. The compound according to claim 1, which is a crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2,4-pentadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-3), wherein said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.71, 11.49, 17.28, 19.57 and 23.14 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
20. The crystalline form A according to claim 19, characterized in that, said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.71, 11.49, 12.43, 15.95, 16.56, 17.28, 19.57, 23.14, 23.66, 24.98 and 26.09 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
21. A pharmaceutical composition comprising the crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2,4-pentadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-3) according to claim 19 and a pharmaceutically acceptable carrier or excipient.
22. The pharmaceutical composition according to claim 21, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
23. The compound according to claim 1, which is a crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-pentenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-4), wherein said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.32, 16.09, 18.28, 20.68 and 21.51 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
24. The crystal form A according to claim 23, characterized in that, said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.32, 10.68, 12.98, 14.57, 16.09, 17.64, 18.28, 19.83, 20.68 and 21.51 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
25. A pharmaceutical composition comprising the crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-pentenoyloxy)-6,7-dihydrothieno[3,2-c] pyridin-5(4H)-yl)-acetate (I-4) according to claim 23 and a pharmaceutically acceptable carrier or excipient.
26. The pharmaceutical composition according to claim 25, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
27. The compound according to claim 1, which is a crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-hexenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-5), wherein said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.58, 16.84, 19.46, 22.50 and 23.47 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
28. The crystal form A according to claim 27, characterized in that, said crystalline form A has an X-ray powder diffraction pattern having diffraction peaks at 5.58, 11.19, 12.21, 15.64, 16.84, 19.00, 19.46, 20.09, 22.50, 23.47, 23.99 and 25.81 expressed by 2θ degree using Cu-Ka radiation, with a 2θ angle measurement error being ±0.2.
29. A pharmaceutical composition comprising the crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-hexenoyloxy)-6,7-dihydrothieno[3,2-c] pyridin-5(4H)-yl)-acetate (I-5) according to claim 27 and a pharmaceutically acceptable carrier or excipient.
30. The pharmaceutical composition according to claim 29, wherein said pharmaceutical composition is a solid oral preparation, a liquid oral preparation, or an injection.
31. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the compound according to claim 1.
32. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form A according to claim 7.
33. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form A according to claim 11.
34. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form B according to claim 15.
35. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form A according to claim 19.
36. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form A according to claim 23.
37. A method for preventing and/or treating cardiovascular and cerebrovascular diseases caused by platelet aggregation, the method comprises administering to a subject in need thereof a therapeutically effective amount of the crystalline form A according to claim 27.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, in which:
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
BEST MODE FOR CARRYING OUT THE INVENTION
(14) The present invention is further described with reference to the examples. The examples are only for explanation and illustration, and are not meant to limit the scope of the present invention in any way.
Example 1
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1)
(15) ##STR00010##
(16) To a reaction flask were added methyl (R)-2-(2-chlorophenyl)-2-(4-nitrobenzenesulfonyloxy)acetate (Compound II) (40.00 g), 5,6,7,7a-tetrahydro-thieno[3,2-c]pyridin-2(4H)-one hydrochloride (Compound IV) (24.00 g), potassium carbonate (60.00 g), and acetonitrile (500 mL). The reaction mixture was stirred at 25-35° C. for 12 h, filtered, and the filtrate was concentrated under reduced pressure to remove the solvent, and then ethanol (150 mL) was added.
(17) The mixture was stirred and dispersed for 30 min, filtered and dried to obtain methyl (2S)-2-(2-chlorophenyl)-2-(2-oxo-7,7a-dihydrothieno[3,2-c]pyridin-5(2H, 4H,6H)-yl)acetate (compound II) (25.40 g).
(18) To a reaction flask were added trans-2-butenoic acid (7.80 g), Compound II (20.00 g), DMAP (2.00 g), and dichloromethane (200 mL), and triethylamine (12.5 mL) and EDCI (18.00 g) were added under stirring. The reaction mixture was stirred at 20-25° C. for 2-3 h. The reaction solution was washed with water (100 mL×1), 5% aqueous hydrochloric acid solution (100 mL×1), and water (100 mL×2), dried over anhydrous sodium sulfate and filtered. The solvent was evaporated under reduced pressure, methanol (100 mL) was added. The mixture was stirred and dispersed, filtered to obtain an off-white solid (11.00 g).
(19) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.92-1.94 (m, 3H), 2.68-2.87 (m, 4H), 3.53 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.08-6.12 (m, 1H), 6.46 (s, 1H), 7.09-7.18 (m, 1H), 7.34-7.41 (m, 2H), 7.46-7.50 (m, 1H), 7.56-7.59 (m, 1H); [M+H].sup.+: 406.0863.
Example 2
Methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2)
(20) ##STR00011##
(21) To a reaction flask were added sorbic acid (12.80 g), Compound II (20.00 g), DMAP (1.00 g), and dichloromethane (300 mL), and triethylamine (15.0 mL) and EDCI (24.00 g) were added under stirring. The reaction mixture was stirred at room temperature for 2-3 h, to which 5% aqueous hydrochloric acid solution (600 mL) was added. After stirring for 5 minutes, the phases were allowed to separate. The organic phase was washed with saturated sodium bicarbonate solution (400 mL), dried over anhydrous sodium sulfate and filtered. The filtrate was evaporated to dryness and separated by silica gel column chromatography (V.sub.ethyl acetate:V.sub.petroleum ether=1:7) to obtain a pale yellow solid (12.00 g).
(22) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.84 (d, 3H), 2.68-2.87 (m, 4H), 3.53 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.02-6.06 (d, 1H), 6.35-6.42 (m, 2H), 6.46 (s, 1H), 7.34-7.50 (m, 4H), 7.56-7.59 (m, 1H); [M+H].sup.+: 432.1024.
Example 3
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2,4-pentadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-3)
(23) ##STR00012##
(24) Compound I-3 was obtained in the same manner as in Example 2 except that (E)-2,4-pentadienoic acid was used instead of sorbic acid, and N,N-diisopropylethylamine was used instead of triethylamine. Compound I-3 was a pale yellow solid.
(25) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 2.66-2.85 (m, 4H), 3.56 (s, 2H), 3.63 (s, 3H), 4.82 (s, 1H), 5.63 (d, 1H), 5.83 (d, 1H), 6.20 (d, 1H), 6.46 (s, 1H), 6.55-6.65 (m, 1H), 7.31-7.47 (m, 4H), 7.55-7.57 (m, 1H); [M+H].sup.+: 418.0865.
Example 4
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-pentenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-4)
(26) ##STR00013##
(27) Compound I-4 was obtained in the same manner as in Example 2 except that trans-2-pentenoic acid was used instead of sorbic acid. Compound I-4 was an off-white solid.
(28) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.03 (t, 3H), 2.24-2.29 (m, 2H), 2.68-2.87 (m, 4H), 3.54 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.03 (d, 1H), 6.46 (s, 1H), 7.15-7.22 (m, 1H), 7.34-7.40 (m, 2H), 7.47-7.49 (m, 1H), 7.58-7.59 (m, 1H); [M+H].sup.+: 420.1027.
Example 5
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-hexenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-5)
(29) ##STR00014##
(30) Compound I-5 was obtained in the same manner as in Example 2 except that trans-2-hexenoic acid was used instead of sorbic acid. Compound I-5 was an off-white solid.
(31) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 0.89 (t, 3H), 1.43-1.50 (m, 2H), 2.22-2.27 (m, 2H), 2.68-2.86 (m, 4H), 3.53 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.07 (d, 1H), 6.47 (s, 1H), 7.09-7.16 (m, 1H), 7.34-7.41 (m, 2H), 7.48-7.50 (m, 1H), 7.56-7.59 (m, 1H); [M+H].sup.+: 434.1182.
Example 6
Methyl (S)-2-(2-chlorophenyl)-2-(2-acryloyloxy-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-1)
(32) ##STR00015##
(33) Compound D-1 was obtained in the same manner as in Example 2 except that acrylic acid was used instead of sorbic acid. Compound D-1 was an oil.
(34) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 2.69-2.85 (m, 4H), 3.54 (s, 2H), 3.65 (s, 3H), 4.85 (s, 1H), 6.17 (d, 1H), 6.34-6.40 (m, 1H), 6.51-6.56 (m, 2H), 7.36-7.41 (m, 2H), 7.48-7.50 (m, 1H), 7.57-7.59 (m, 1H); [M+H].sup.+: 392.0711.
Example 7
Methyl (S)-2-(2-chlorophenyl)-2-(2-(3-methyl-2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-2)
(35) ##STR00016##
(36) Compound D-2 was obtained in the same manner as in Example 2 except that 3-methyl-2-butenoic acid was used instead of sorbic acid. Compound D-2 was an oil.
(37) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.95 (s, 3H), 2.16 (s, 3H), 2.68-2.84 (m, 4H), 3.53 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 5.88 (s, 1H), 6.40 (s, 1H), 7.35-7.40 (m, 2H), 7.46-7.49 (m, 1H), 7.57-7.60 (m, 1H); [M+H].sup.+: 420.1024.
Example 8
Methyl(S,E)-2-(2-chlorophenyl)-2-(2-(2-heptenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-3)
(38) ##STR00017##
(39) Compound D-3 was obtained in the same manner as in Example 2 except that trans-2-heptenoic acid was used instead of sorbic acid. Compound D-3 was an oil.
(40) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 0.80-0.89 (m, 3H), 1.22-1.35 (m, 2H), 1.38-1.46 (m, 2H), 2.23-2.28 (m, 2H), 2.68-2.85 (m, 4H), 3.53 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.05 (d, 1H), 6.46 (s, 1H), 7.09-7.16 (m, 1H), 7.34-7.40 (m, 2H), 7.48 (d, 1H), 7.57 (d, 1H); [M+H].sup.+: 448.1348.
Example 9
Methyl (S)-2-(2-chlorophenyl)-2-(2-(2-methylacryloyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-4)
(41) ##STR00018##
(42) Compound D-4 was obtained in the same manner as in Example 2 except that 2-methacrylic acid was used instead of sorbic acid. Compound D-4 was an oil.
(43) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.96 (s, 3H), 2.69-2.86 (m, 4H), 3.54 (s, 2H), 3.65 (s, 3H), 4.85 (s, 1H), 5.91 (s, 1H), 6.25 (s, 1H), 6.50 (s, 1H), 7.34-7.41 (m, 2H), 7.48-7.50 (m, 1H), 7.57-7.59 (m, 1H); [M+H].sup.+: 406.0866.
Example 10
Methyl (S,Z)-2-(2-chlorophenyl)-2-(2-(2-methyl-2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate (D-5)
(44) ##STR00019##
(45) Compound D-5 was obtained in the same manner as in Example 2 except that (Z)-2-methyl-2-butenoic acid was used instead of sorbic acid. Compound D-5 was an oil.
(46) .sup.1H-NMR (DMSO-d.sub.6), (ppm): 1.94 (t, 3H), 1.99 (t, 3H), 2.69-2.86 (m, 4H), 3.54 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.36-6.38 (m, 1H), 6.49 (s, 1H), 7.35-7.41 (m, 2H), 7.48-7.50 (m, 1H), 7.57-7.59 (m, 1H); [M+H].sup.+: 420.1007.
Example 11
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-methyl-2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-6)
(47) ##STR00020##
(48) Compound D-6 was obtained in the same manner as in Example 2 except that (E)-2-methyl-2-butenoic acid was used instead of sorbic acid. Compound D-6 was an oil.
(49) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 1.81-1.85 (m, 6H), 2.68-2.85 (m, 4H), 3.54 (s, 2H), 3.65 (s, 3H), 4.84 (s, 1H), 6.46 (s, 1H), 7.00-7.05 (m, 1H), 7.34-7.41 (m, 2H), 7.48-7.50 (m, 1H), 7.56-7.59 (m, 111); [M+H]: 420.1008.
Example 12
Methyl (S)-2-(2-chlorophenyl)-2-(2-(2-phenylacryloyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-7)
(50) ##STR00021##
(51) Compound D-7 was obtained in the same manner as in Example 2 except that 2-phenyl-2-butenoic acid was used instead of sorbic acid. Compound D-7 was an oil.
(52) .sup.1H-NMR (DMSO-d.sub.6), (ppm): 2.70-2.84 (m, 4H), 3.55 (s, 2H), 3.65 (s, 3H), 4.85 (s, 1H), 6.25 (s, 1H), 6.52 (s, 1H), 6.54 (s, 1H), 7.36-7.42 (m, 5H), 7.46-7.50 (m, 3H), 7.57-7.59 (m, 1H); [M+H].sup.+: 468.1008.
Example 13
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-(3-(4-methoxyphenyl)acryloyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (D-8)
(53) ##STR00022##
(54) Compound D-8 was obtained in the same manner as in Example 2 except that p-methoxycinnamic acid was used instead of sorbic acid. Compound D-8 was a pale orange solid.
(55) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 2.69-2.86 (m, 4H), 3.51 (s, 2H), 3.66 (s, 3H), 3.80 (s, 3H), 4.85 (s, 1H), 6.49 (s, 1H), 6.67 (d, 1H), 6.99 (d, 2H), 7.34-7.41 (m, 2H), 7.49 (d, 1H), 7.59 (d, 1H), 7.75 (d, 2H), 7.82 (d, 1H); [M+H].sup.+: 498.1132.
Example 14
Methyl (S,E)-2-(2-chlorophenyl)-2-(2-acetoxy-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate Hydrochloride (D-9, B is Methyl)
(56) ##STR00023##
(57) To a 500 mL three-necked flask were added compound H (20 g), dichloromethane (200 mL), triethylamine (16.4 mL) and acetic anhydride (7.8 mL) successively. The reaction mixture was stirred at room temperature for 5 h. The reaction solution was washed successively with distilled water (100 mL), 5% aqueous HCl solution (120 mL), saturated sodium bicarbonate aqueous solution (60 mL) and saturated brine (60 mL), dried over anhydrous sodium sulfate, filtered and separated by silica gel column chromatography (V.sub.ethyl acetate:V.sub.petroleum ether=1:5) to obtain a yellow oil (15.00 g, yield 66.42%), i.e. compound methyl (S,E)-2-(2-chlorophenyl)-2-(2-acetoxy-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (B is methyl), which is an oil.
(58) .sup.1H-NMR (DMSO-d.sub.6), δ(ppm): 2.25 (s, 3H), 2.67-2.85 (m, 4H), 3.52 (s, 3H), 3.65 (s, 3H), 4.84 (s, 1H), 6.42 (s, 1H), 7.33-7.41 (m, 2H), 7.47-7.50 (m, 1H), 7.56-7.59 (m, 1H); [M+H].sup.+: 380.0710.
(59) To a 100 mL three-necked flask were added the obtained oil (3.00 g) and ethyl acetate (30 mL), and the reaction mixture was stirred to dissolve. 2.2 mol/L HCl-ethyl acetate solution (8.60 mL) was added dropwise at 0-5° C. under stirring and a solid was precipitated out. After the addition was completed, the mixture was raised to room temperature to react for 2 h, filtered, and the filter cake was washed with ethyl acetate (20 mL×3) to obtain a white solid.
(60) To the reaction flask was added the obtained white solid, followed by ethyl acetate (40 mL) and absolute ethanol (10 mL). The mixture was heated to reflux under stirring to obtain a clear solution, and then cooled to room temperature for crystallization. The temperature was maintained, and stirring was continued for 2 h. The resulting mixture was filtered and dried under vacuum at 35-40° C. for 3-4 h to obtain compound methyl (S,E)-2-(2-chlorophenyl)-2-(2-acetoxy-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate hydrochloride (D-9, B is methyl) as a white solid (1.00 g).
(61) In the the Examples of the Present Invention, the Measurement Conditions of the Crystalline Form are as Follows:
(62) X-Ray Powder Diffraction Conditions:
(63) Instrument: Rigaku SmartLab 3 kW powder X-ray diffractometer
(64) Ray: Cu-Ka radiation, λ=1.5419 Å, 2θ=3°˜40°
(65) Voltage: 40 kV
(66) Electric current: 40 mA
(67) Scan speed: 10°/min
(68) DS/SS=1/2°
(69) RS: 20 mm
(70) DSC-TGA Conditions:
(71) Instrument: METTLER TOLEDO TGA/DSC1 Simultaneous Thermal Analyzer
(72) Heating rate: 10° C./min
(73) Temperature range: 30° C.˜170° C.
(74) Reference compound: Al.sub.2O.sub.3
Example 15
Crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyl-oxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1)
(75) To a reaction flask was added compound I-1 (5.00 g), and absolute ethanol (100 mL) was added. The reaction mixture was heated to reflux to obtain a clear solution, and then cooled to 15-25° C. under stirring and maintained for 2 h while stirring. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 5 h to obtain a white solid (4.30 g, yield: 86.00%).
(76) The X-ray powder diffraction pattern and DSC-TGA patter of this product are shown in
Example 16
Crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyl-oxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1)
(77) To a reaction flask was added compound I-1 (2.00 g), and methanol (60 mL) was added. The reaction mixture was heated to reflux to obtain a clear solution, and then cooled to 20-25° C. under stirring and maintained for 2 h while stirring. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 5 h to obtain a white solid (1.60 g, yield: 80.00%).
(78) The resulting white solid was determined by X-ray powder diffraction and DSC-TGA as crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1).
Example 17
Crystalline form A of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2)
(79) To a reaction flask was added compound I-2 (3.00 g), and absolute ethanol (10 mL) was added. The reaction mixture was heated to reflux to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 2 h for crystallization. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 10 h to obtain a pale yellow solid (2.20 g, yield: 73.33%).
(80) The X-ray powder diffraction pattern and DSC-TGA pattern of this product are shown in
Example 18
Crystalline form A of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2)
(81) To a reaction flask was added compound I-2 (3.00 g), and absolute methanol (10 mL) was added. The reaction mixture was heated to reflux to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 2 h for crystallization. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 10 h to obtain a pale yellow solid (2.18 g, yield: 72.67%).
(82) The resulting pale yellow solid was determined by X-ray powder diffraction and DSC-TGA as crystalline form A of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2).
Example 19
Crystalline form B of methyl (S)-2-(2-chlorophenyl)-2-(2-((2E,4E)-2,4-hexadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-2)
(83) To a reaction flask was added compound I-2 (4.00 g), and acetic acid (6 mL) was added. The reaction mixture was heated to 80-100° C. to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 2 h for crystallization. The resulting mixture was filtered, the obtained solid was washed with absolute ethanol and then washed with n-hexane, and dried under vacuum at 40-45° C. for 10 h to obtain a pale yellow solid (2.85 g, yield: 71.25%).
(84) The X-ray powder diffraction pattern and DSC-TGA pattern of this product are shown in
Example 20
Crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2,4-pentadienoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-3)
(85) To a reaction flask was added compound I-3 (3.00 g), and methanol (40 mL) was added. The reaction mixture was heated to relux to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 3 h for crystallization. The resulting mixture was filtered and air-dried at 35-40° C. for 8 h to obtain a pale yellow solid (1.50 g, yield: 50.00%).
(86) The X-ray powder diffraction pattern and DSC-TGA pattern of this product are shown in
Example 21
Crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-pentenoyl-oxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-4)
(87) To a reaction flask was added compound I-4 (3.00 g), and methanol (10 mL) was added. The reaction mixture was heated to relux to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 4 h for crystallization. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 6 h to obtain an off-white solid (2.50 g, yield: 83.33%).
(88) The X-ray powder diffraction pattern and DSC-TGA pattern of this product are shown in
Example 22
Crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-hexenoyl-oxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-5)
(89) To a reaction flask was added compound I-5 (4.00 g), and absolute ethanol (20 mL) was added. The reaction mixture was heated to relux to obtain a clear solution. The resulting solution was allowed to cool down to 20-25° C. and the temperature was maintained for 4 h for crystallization. The resulting mixture was filtered and dried under vacuum at 40-45° C. for 6 h to obtain an off-white solid (3.20 g, yield: 80.00%).
(90) The X-ray powder diffraction pattern and DSC-TGA pattern of this product are shown in
Example 23
(91) Test of Inhibitory Effect of Compounds on Platelet Aggregation in Rats
(92) Healthy male SD rats were selected and randomly divided into solvent control group, positive drug control group and test compound group. Intragastric administration was carried out, with the administration volume being 10 ml/kg˜bw. The solvent control group was administered an equal volume of 0.5% CMC-Na. 2 h after administration, the rats were anesthetized with 4.0% chloral hydrate (8.5 ml/kg) by intraperitoneal injection, blood was collected from the abdominal aorta, and 3.8% sodium citrate was used for anticoagulation. Platelet-rich plasma (PRP, 1100 rpm, centrifugated for 15 min) and platelet-poor plasma (PPP, 3500 rpm, centrifugated for 10 min) were routinely prepared. The platelet count was adjusted to 5×10.sup.8 cells/ml with PPP. Along the wall of a platelet cuvette with a magnetic rotor was added well-mixed PRP (300 μL), which was incubated at 37° C. for 5 min, and then the maximum percentage of platelet aggregation induced by ADP (20 uM) was measured. The percentage inhibition of platelet aggregation of the test compounds and drugs was calculated, with the aggregation rate of the rats in the control group being 100%. All tests were completed within 2 h after blood collection, and the results are shown in Table 7.
(93) TABLE-US-00007 TABLE 7 Inhibition of platelet aggregation after oral administration of test compounds to rats Sample Dose size Aggregation Inhibition ED.sub.50 Group (mg/kg) (number) rate (%) rate (%) (mg/kg) Control — 6 60.0 ± 23.4 — — Clopidogrel 2.5 6 44.1 ± 13.5 26.5 4.130 5 6 24.2 ± 10.6** 59.7 10 6 5.7 ± 7.5** 90.5 Prasugrel 0.25 6 52.1 ± 6.6 13.3 0.612 0.5 6 37.4 ± 12.3* 37.8 1 6 15.0 ± 10.2** 75.0 I-1 0.5 6 46.6 ± 8.1 22.4 1.004 1 6 29.9 ± 8.7** 50.2 2 6 13.8 ± 11.7** 77.0 I-2 0.75 6 55.8 ± 13.9 7.0 1.582 1.5 6 29.6 ± 8.7** 50.8 3 6 8.5 ± 9.4** 85.8 I-3 1 6 33.6 ± 31.3 44.0 1.043 2 6 1.44 ± 2.5** 97.6 4 6 0.0 ± 0.0** 100 I-4 0.5 6 44.3 ± 25.8 26.2 1.266 1 6 37.1 ± 20.8 38.2 2 6 22.3 ± 17.2** 62.9 4 6 13.0 ± 11.3** 78.4 8 6 0.0 ± 0.0** 100.0 I-5 0.5 6 48.4 ± 17.3 19.5 1.032 1 6 28.3 ± 11.7** 52.8 2 6 15.4 ± 14.7** 74.3 Note: compared with the model group, *p < 0.05; **p < 0.01.
(94) It can be seen from the test results that, compared with the normal control group, the compounds having the structure of formula (I) of the present invention have a significant effect against ADP-induced platelet aggregation. Therefore, they can be used to prevent or treat cardiovascular and cerebrovascular diseases such as coronary artery syndrome, myocardial infarction, and myocardial ischemia caused by platelet aggregation.
Example 24
(95) Test of Effect of Compounds on Arteriovenous Bypass Thrombosis in Rats
(96) Male SD rats were randomly divided into solvent control group, positive drug control group and test compound group. The solvent control group was administered a corresponding volume of the solvent. The test compound group was intragastrically administered with the test compounds at a dose of 1.0, 3.0, 10.0 and 30.0 mg/kg, respectively. The positive drug control group was intragastrically administered with prasugrel (0.1, 0.3, 1.0 and 3.0 mg/kg) or clopidogrel (3, 10 and 30 mg/kg). Rats were anesthetized with 4% chloral hydrate (0.32 g/kg), and fixed on the operating table at the supine position. The right common carotid artery and the left external jugular vein were separated, and was each inserted with a Teflon tube filled with normal saline solution containing heparin (50 U/mL), which were connected through another Teflon tube. A 6 cm long cotton thread was placed at the joints of the two tubes. After 2.5 h of administration, the arteriovenous loop was opened in each group and circulated for 15 min. The blood flow was interrupted, and the cotton thread wrapped with the thrombus was quickly removed and weighed. The weight of the cotton thread was subtracted to obtain the wet weight of the thrombus, and then it was baked in the oven to constant weight and weighed. The weight of the cotton thread was subtracted to obtain the dry weight of the thrombus.
(97) The test results show that all of the test compounds can inhibit the thrombosis of arteriovenous bypass model in rats in a dose-dependent manner.
(98) TABLE-US-00008 TABLE 8 Effects of compounds on dry weight of thrombus from arteriovenous bypass in rats Dose Dry weight of Inhibition ED.sub.50 Group (mg/kg) thrombus (%) rate (%) (mg/kg) Model — 10.1 ± 1.9 — Prasugrel 0.1 9.5 ± 2.4 6.0 1.571 0.3 9.2 ± 2.1 9.0 1 6.5 ± 2.0** 35.7 3 3.0 ± 1.5** 70.2 Clopidogrel 3 7.7 ± 1.2 24.2 11.845 10 5.9 ± 2.4** 41.5 30 2.8 ± 1.5** 72.6 I-1 1 8.3 ± 2.7 18.3 7.888 3 5.8 ± 1.4** 43.2 10 4.5 ± 2.4** 56.0 30 3.6 ± 0.5** 64.2 I-2 1 6.4 ± 3.6 36.5 5.861 3 6.1 ± 2.9* 40.3 10 4.9 ± 2.3** 52.1 30 3.2 ± 1.5** 68.6 Note: compared with the model group, *p < 0.05; **p < 0.01
Example 25
(99) Study on pharmacokinetics of compounds: clopidogrel is a prodrug which requires two steps of metabolism in vivo to be converted into an active metabolite. The steps are as follows:
(100) ##STR00024##
(101) Studies have shown that there is gene polymorphism in human CYP2C19, which mainly affects the first-step metabolism of clopidogrel, and a considerable proportion of the population has a relatively low metabolism of clopidogrel. It is reported by literatures that the genetic mutation rates in Japanese, Asians, Australians, Caucasians, and African-Americans were 28%, 30%, 35%, 13%, and 18%, respectively, and this portion of population is prone to develop “clopidogrel resistance”, and thus being prone to occur severe cardiovascular and cerebrovascular events. Therefore, whether the relevant drug can be successfully metabolized into 2-oxo (2-Oxo) product in plasma can indicate whether the drug can solve the problem of “drug resistance”.
(102) Plasma samples (double sample) containing 1 μM of the compounds of the present invention, clopidogrel hydrogen sulfate (LBGL), 2-oxo product (2-Oxo) were prepared from human blank plasma, and incubated at 37° C. 50 μL of the above incubated plasma samples were taken at different time points, and 100 μL of precipitant (acetonitrile:methanol=7:3) and 50 μL of internal standard were added. The mixture was vortexed for 1 min and centrifuged for 10 min. 100 μL of the supernatant was taken into an inner inserted tube, centrifuged for 5 min, and injected for LC-MS/MS analysis.
(103) Preparation of blank control sample (PPT-0): 100 μL of frozen human blank plasma was taken, to which 195 μL of acetonitrile and 100 μL of internal standard were added, followed by 5 μL of the compound of the present invention, clopidogrel or 2-oxo product (20 μM). The mixture was vortexed for 1 min and centrifuged for 10 min. 100 μL of the supernatant was taken into an inner inserted tube, centrifuged for 5 min, and injected for LC-MS/MS analysis. The results are shown in Table 9-11:
(104) TABLE-US-00009 TABLE 9 Clopidogrel and metabolite concentrations in human plasma at different time points of incubation Time LBGL (min) μM % 0 0.965 98.1 5 1.045 106 10 1.000 102 20 0.987 100 30 1.025 104 45 0.995 101 60 0.981 100 90 0.924 94.0 120 0.944 96.0
(105) TABLE-US-00010 TABLE 10 I-1 and metabolite concentrations in human plasma at different time points of incubation Time I-1 2-Oxo (min) μM % μM % 0 0.950 100 0.0412 4.34 5 0.872 91.7 0.0807 8.49 10 0.782 82.3 0.143 15.1 20 0.575 60.5 0.195 20.5 30 0.425 44.7 0.198 20.8 45 0.266 28.0 0.167 17.5 60 0.174 18.3 0.130 13.6 90 0.0522 5.49 0.0535 5.63 120 0.0162 1.70 0.0224 2.35 150 0.00531 0.558 0.00857 0.902 180 0.00219 0.231 0.00397 0.418 240 0 0 0 0 300 0 0 0 0 360 0 0 0 0
(106) TABLE-US-00011 TABLE 11 I-2 and metabolite concentrations in human plasma at different time points of incubation Time I-2 2-Oxo (min) μM % μM % 0 1.11 100 0.0192 1.74 5 1.03 93.5 0.0246 2.23 10 1.03 92.8 0.0319 2.89 20 1.07 97.1 0.0449 4.06 30 0.957 86.6 0.0493 4.46 45 0.927 83.9 0.0522 4.72 60 0.849 76.8 0.0521 4.71 90 0.705 63.8 0.0481 4.35 120 0.695 62.9 0.0457 4.14 150 0.516 46.7 0.0445 4.03 180 0.475 43.0 0.0388 3.51 240 0.332 30.0 0.0331 3.00 300 0.231 20.9 0.0294 2.66 360 0.164 14.8 0.0236 2.14
(107) It can be seen from the test results that clopidogrel is substantially stable in human plasma over 120 min; the representative compounds I-1 and I-2 of the present invention rapidly generate 2-oxo products in human plasma.
(108) The test results show that the compounds of the formula (I) of the present invention are not affected by gene polymorphism of the CYP2C19, and can be rapidly metabolized into a 2-oxo (2-Oxo) product in the plasma, which can solve the problem of “clopidogrel resistance”.
Example 26
(109) Safety Test:
(110) Safety Evaluation of Compounds I-1 and I-2 in Single Dosing:
(111) The test consisted of a physiological control group, a solvent control group, and two administration groups, with 4 animals in each group, half of which were male and the other half of which were female. The animals were intragastrically administered with the test compounds at a single dose of 2 g/kg. The solvent control group was administered with an equal volume of the blank solvent. Animals were daily observed for various conditions during the test. ECG examinations were performed before administration, 1 h after administration, and 7 and 14 days after administration. Hematological and blood biochemical tests were performed before administration and 1, 7 and 12 days after administration.
(112) The animals had normal activities, good mental condition, and normal diet during the administration and observation period after the administration. There were no obvious abnormalities in the ECG examinations, hematological tests and serum biochemical tests.
(113) It was reported by the literature that in the acute toxicity test of prasugrel in dog, toxic effects such as vomiting, increased ALP, and decreased platelet aggregation etc. occurred at a dose of ≥300 mg/kg, and toxic effect such as vomiting etc. occurred at a dose of 1000 mg/kg, and toxic effect such as hepatocellular atrophy etc. occurred at a dose of 2000 mg/kg.
(114) It can be known that the compounds of the present invention are less toxic to beagle dogs, which have no toxic response to a high dose of administration, and the compounds have higher safety.
(115) Safety Evaluation of Compounds I-1 and I-2 in Multiple Dosing:
(116) The test consisted of a physiological control group, a solvent control group, and two administration groups, with 4 animals in each group, half of which were male and the other half of which were female. Two dose groups, 100 mg/kg group and 300 mg/kg group, were set for the test compounds, to which the test compounds at doses of 100 mg/kg and 300 mg/kg were intragastrically administered respectively over 14 days. The solvent control group was administered with an equal volume of the blank solvent. Animals were daily observed for various conditions during the test. ECG examinations were performed before administration, and 7 and 14 days after administration. Hematological and blood biochemical tests were performed before administration and 7 and 15 days after administration.
(117) 100 mg/kg dose group: the animals had normal activities, good mental condition, and normal diet after the administration. There were no obvious abnormalities in the ECG examinations, hematological tests and serum biochemical tests on day 7 and 14 after administration.
(118) 300 mg/kg dose group: the animals had normal activities, good mental condition, and normal diet after the administration. There were no obvious abnormalities in the ECG examinations, hematological tests and serum biochemicals test on day 7 and 14 after administration.
(119) The test results showed that continuous intragastrical administration of the representative compounds I-1 and I-2 of the present invention for 14 days showed no significant drug-related toxicity in appearance, mental activity, appetite and several examinations such as hematological, blood biochemical, and ECG etc. examinations in beagle dogs. No abnormal phenomena such as mydriasis and vomiting etc. was observed, no signs of hepatotoxicity such as elevated ALP and ALT etc. was observed, and no other abnormal toxicities were observed.
(120) It was reported by the literature that in the multiple dosing test of prasugrel in dog over two weeks, toxic responses such as mydriasis, vomiting, white matter (unabsorbed test substance) in stool, decreased platelet aggregation, increased ALP, increased total liver volume, hepatocyte swelling, hyaline surface and testicular seminiferous epithelial atrophy etc. occurred at a dose of ≥100 mg/kg/day, and toxic response such as weight loss etc. also occurred at a dose of ≥300 mg/kg/day.
(121) It can be known that the compounds having the structure of formula (I) of the present invention are less toxic to beagle dogs when administered intragastrically, and have higher safety.
Example 27
(122) Test of Hemorrhagic Side Effects:
(123) Healthy male SD rats were selected and randomly divided into model control group, prasugrel group, and test compound group, and intragastrical administration was carried out. 1 h after administration, the rats were anesthetized by intraperitoneal injection of 20% urethane (1 g/kg), and the tail was cut off 5 mm from the tip of the tail, which was then placed in a test tube containing 5 ml normal saline at 37° C. The time from tail cut to cease of bleeding was recorded as the bleeding time. The increasing rate of bleeding time in each dose group was calculated, with the bleeding time of the rats in the control group being 100%. A linear equation was fitted to calculate the dose of prasugrel and the compound of the present invention that doubled the bleeding time (ED.sub.200).
(124) TABLE-US-00012 TABLE 12 Effects of prasugrel and compound of the present invention on bleeding time of amputated tail in rats ED.sub.200 Compound (mg .Math. kg.sup.−1) Prasugrel 0.513 I-1 1.977
(125) It can be known from the test results that the compounds having the structure of formula (I) of the present invention have a significantly lower hemorrhagic risk than prasugrel.
Example 28
(126) Study on the Stability of the Compounds:
(127) The stability of the compound is investigated under the conditions of high temperature, high humidity and light. The testing conditions for high performance liquid chromatography (HPLC) are as follows:
(128) Method 1:
(129) Instrument: high performance liquid chromatography;
(130) Column: Inertsil C8-3, 150 mm×4.6 mm, 5 μm;
(131) Mobile phase A: acetonitrile; mobile phase B: 5 mM ammonium dihydrogen phosphate;
(132) Flow rate: 1.0 mL/min;
(133) Detection wavelength: 220 nm;
(134) Running time: 60 min;
(135) Injection volume: 20 μL;
(136) Column temperature: 35° C.;
(137) Sample chamber temperature: 25° C.;
(138) Gradient elution table:
(139) TABLE-US-00013 TABLE 13 Gradient elution list Mobile Mobile Time phaseA phaseB (min) (%) (%) 0 45 55 30 60 40 45 70 30 50 80 20 55 80 20 56 45 55 60 45 55
(140) Method 2:
(141) Column: Agilent Poroshell 120 EC-C18, 100 mm×4.6 mm, 2.7 μm;
(142) Column temperature: 30° C.;
(143) Other conditions are the same as that in Method 1.
(144) Samples relating to Compound I-2 were tested using Method 2 and other samples were tested using Method 1. The test results of the influence factors are shown in Table 14, and the test results of the light-avoidance stability test are shown in Table 15.
(145) TABLE-US-00014 TABLE 14 Data list of influence factors results of compounds Time 5 days 10 days 30 days High High High temper- Light High temper- Light High temper- Light High 0 day ature 4500 ± humidity ature 4500 ± humidity ature 4500 ± humidity Compound Test item 0point 60° C. 500 LX RH92.5% 60° C. 500 LX RH92.5% 60° C. 500 LX RH92.5% I-1 Appearance White White White White White White White White Pale White solid solid solid solid solid solid solid solid yellow solid solid Individual 0.236 0.234 0.287 0.235 0.232 0.313 0.234 0.237 0.698 0.235 maximum impurity % Chromatographic 99.612 99.595 99.539 99.583 99.596 99.502 99.578 99.570 98.868 99.544 purity % I-2 Appearance Pale Pale Pale Pale Pale Yellow Pale Yellow Ocherous Pale yellow yellow yellow yellow yellow solid yellow solid solid yellow solid solid solid solid solid solid solid Isomer % 0.705 0.696 0.699 0.707 0.692 0.712 0.708 0.683 0.695 0.704 Chromatographic 98.879 98.840 98.853 98.897 98.930 98.756 98.882 98.936 95.099 98.885 purity % D-8 Appearance Pale Pale Brown Pale Brown Brown Pale Black Red Pale orange brown solid orange solid solid orange block Brown orange solid solid solid solid Solid solid Individual 0.135 0.510 1.094 0.127 1.224 2.821 0.104 5.418 8.206 0.172 maximum impurity % Chromatographic 99.118 96.953 91.635 99.253 93.371 80.960 99.202 80.070 59.908 98.933 purity % D-9 Appearance White Brown Pale Brown Brown Pale Brown Brown Pale Brown solid solid yellow oil solid yellow oil solid yellow solid solid solid solid Individual 0.062 2.897 0.946 20.760 5.254 1.621 26.942 9.740 3.728 52.717 maximum impurity % Chromatographic 99.802 92.725 97.637 29.362 84.395 96.472 3.827 39.866 91.198 — purity %
(146) TABLE-US-00015 TABLE 15 Data list for stability test of compounds after being packaged with aluminum foil Time 0 day 5 days 10 days 30 days Test item Light Light Light (aluminum (aluminum (aluminum foil) foil) foil) 4500 ± 4500 ± 4500 ± Compound 0 point 500 LX 500 LX 500 LX I-1 Appearance White White White White solid solid solid solid Individual 0.236 0.242 0.243 0.242 maximum impurity % Chroma- 99.612 99.598 99.565 99.555 tographic purity % I-2 Appearance Pale Pale Pale Pale yellow yellow yellow yellow solid solid solid solid Individual 0.705 0.699 0.699 0.696 maximum impurity % Chroma- 98.879 98.348 98.544 98.434 tographic purity %
(147) The results show that compared with zero point the individual maximum impurity and chromatographic purity of the representative compounds of the present invention have not changed significantly under high temperature and high humidity conditions, indicating that the compounds have a good stability. Only slight degradation occurred under light conditions, which can be avoided by keeping away from light. However, the representative compounds reported by literatures have significantly reduced chromatographic purities under the conditions of high temperature, high humidity and light, and have poor stability.
Example 29
Study on the Stability of Crystalline Form A of methyl(S,E)-2-(2-chloro-phenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-acetate (I-1)
(148) The stability of crystalline form A of methyl (S,E)-2-(2-chlorophenyl)-2-(2-(2-butenoyloxy)-6,7-dihydrothieno[3,2-c]pyridin-5 (4H)-yl)-acetate (I-1) was investigated under high temperature, high humidity and light conditions for 5 days, 10 days and 30 days. The results show that compared with zero point, the compound has good stability. At the same time, the X-ray powder diffraction analysis of the samples after investigation show that the crystalline form has not changed and is still crystalline form A, and the results show that the crystalline form is stable.
(149) TABLE-US-00016 TABLE 16 Investigation on the stability of crystalline form Time point Crystalline form 0 day Crystalline form A 5 days High humidity (RH 92.5%) Crystalline form A High temperature (60° C.) Crystalline form A Light (5000 ± 5000 Lx) Crystalline form A 10 days High humidity (RH 92.5%) Crystalline form A High temperature (60° C.) Crystalline form A Light (5000 ± 500 Lx) Crystalline form A 30 days High humidity (RH 92.5%) Crystalline form A High temperature (60° C.) Crystalline form A Light (5000 ± 500 Lx) Crystalline form A