ORAL PHARMACEUTICAL COMPOSITION

Abstract

An oral pharmaceutical composition of a peptide amide compound (compound A). The present invention further relates to a method for preparing an oral pharmaceutical composition, and the use of the oral pharmaceutical composition in preparing a drug for treating diseases or conditions related to the κ-opioid receptor.

##STR00001##

Claims

1. An oral pharmaceutical composition, comprising: a) compound A: ##STR00034##  and b) an absorption enhancer.

2. The oral pharmaceutical composition of claim 1, wherein the absorption enhancer is selected from one or more of N-[8-(2-hydroxybenzoyl)amino]octanoic acid or a pharmaceutically acceptable salt thereof, 4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof, lauroyl-L-carnitine or a hydrochloride thereof, sodium caprylate, sodium caprate, capric acid, caprylocaproyl macrogolglyceride.

3. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is N-[8 (2 hydroxybenzoyl)amino]octanoic acid or a pharmaceutically acceptable salt thereof.

4. The oral pharmaceutical composition of claim 3, wherein the weight ratio of compound A to N-[8-(2-hydroxybenzoyl)amino]octanoic acid or a pharmaceutically acceptable salt thereof is 1:20 to 1:80.

5. (canceled)

6. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is 4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof.

7. The oral pharmaceutical composition of claim 6, wherein the weight ratio of compound A to 4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof is 1:20 to 1:200.

8. The oral pharmaceutical composition of claim 6, further comprising one or more non-active ingredients selected from (1) a filler, (2) a binder, (3) a disintegrant, (4) a pH regulator, (5) a surfactant, and (6) a lubricant.

9. The oral pharmaceutical composition of claim 8, wherein the non-active ingredient is a lubricant, and the weight ratio of compound A:4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof:the lubricant is 1:(20-200):(0.2-2).

10. The oral pharmaceutical composition of claim 9, wherein the lubricant is magnesium stearate.

11. The oral pharmaceutical composition of claim 8, wherein the non-active ingredient is a filler and a binder, and the weight ratio of compound A:4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof:the filler:the binder is 1:(20-200):200:5.

12. The oral pharmaceutical composition of claim 11, wherein the filler is microcrystalline cellulose, and the binder is povidone.

13. The oral pharmaceutical composition of claim 8, wherein the non-active ingredient is a filler, a binder and a lubricant, and the weight ratio of compound A:4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof:the filler:the binder:the lubricant is 1:(20-200):200:5:(1-5).

14. The oral pharmaceutical composition of claim 13, wherein the filler is selected from microcrystalline cellulose and anhydrous calcium hydrogenphosphate, the binder is povidone, and the lubricant is magnesium stearate.

15. The oral pharmaceutical composition of claim 8, wherein the non-active ingredient is a surfactant, a filler and a lubricant, and the weight ratio of compound A:4-[(4-chloro-2-hydroxy-benzoyl)amino]butyric acid or a pharmaceutically acceptable salt thereof:the surfactant:the filler:the lubricant is 3:200:6:200:1.

16. The oral pharmaceutical composition of claim 15, wherein the surfactant is propylene glycol monolaurate and/or polyethylene glycol, the filler is anhydrous calcium hydrogenphosphate, and the lubricant is magnesium stearate.

17. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is lauroyl-L-carnitine or a hydrochloride thereof.

18. The oral pharmaceutical composition of claim 17, wherein the weight ratio of compound A to lauroyl-L-carnitine or a hydrochloride thereof is 1:10-1:150.

19. The oral pharmaceutical composition of claim 17, further comprising one or more non-active ingredients selected from (1) a filler, (2) a binder (3) a disintegrant, (4) a pH regulator, (5) a surfactant, and (6) a lubricant.

20. The oral pharmaceutical composition of claim 19, wherein the non-active ingredient is a pH regulator; the weight ratio of compound A:lauroyl-L-carnitine or a hydrochloride thereof:the pH regulator is 1:(10-50):24.

21. The oral pharmaceutical composition of claim 20, wherein, the pH regulator is citric acid.

22. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is sodium caprate.

23. The oral pharmaceutical composition of claim 22, wherein the weight ratio of compound A to sodium caprate is 1:50-1:200.

24. (canceled)

25. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is capric acid.

26. (canceled)

27. The oral pharmaceutical composition of claim 2, wherein the absorption enhancer is caprylocaproyl macrogolglyceride.

28. The oral pharmaceutical composition of claim 27, wherein the weight ratio of compound A to caprylocaproyl macrogolglyceride is 1:600-1:3600.

29. (canceled)

30. A method for preparing the oral pharmaceutical composition of claim 1, comprising the following step: compound A, the absorption enhancer and other non-active ingredients are mixed directly, and then filled into capsules or compressed into tablets; or compound A, the absorption enhancer and other non-active ingredients are wet granulated and then filled into capsules or compressed into tablets; or compound A, the absorption enhancer and other hydrophilic non-active ingredients are wet granulated, then dispersed in a hydrophobic medium, and filled into capsules; or compound A, the absorption enhancer and other non-active ingredients are dissolved in purified water to prepare a solution; or compound A, the absorption enhancer and other non-active ingredients are dissolved, dried and pulverized, and then filled into capsules or compressed into tablets.

31. A method for treating a disease or a condition related to κ-opioid receptor, comprising administering an oral pharmaceutical composition of claim 1.

32. (canceled)

33. (canceled)

34. (canceled)

Description

DETAILED DESCRIPTION OF EMBODIMENTS

[0126] Unless stated to the contrary, the terms used in the description and claims have the following meanings.

(1) SNAC: sodium N-[8-(2-hydroxybenzoyl)amino]octanoate.
(2) 4-CNAB: sodium 4-[(4-chloro-2-hydroxy-benzoyl)amino]butyrate.

[0127] The implementation process and beneficial effects of the present invention are described in detail below through specific examples, which are intended to help readers better understand the essence and characteristics of the present invention, and are not intended to limit the scope of implementation of the present invention.

[0128] The raw materials/reagents used in the examples are commercially available or self-prepared, and the formulations in the examples are all at single preparation dosage.

[0129] Unless otherwise specified, “0 #capsule” in the following examples refers to the shell that can be used to prepare gastric coated hard capsules with the specification of 0 #.

[0130] Compound A was prepared with reference to the method disclosed in WO 2019/015644.

Example 1

[0131] 3 mg of compound A was dissolved in physiological saline to prepare 0.06 mg/ml physiological saline solution.

Example 2

[0132] 5 mg of compound A and 150 mg of SNAC were mixed uniformly and then filled into 0 #capsules.

Example 3

[0133] 5 mg of compound A and 100 mg of SNAC were mixed uniformly and then filled into 0 #capsules.

Example 4

[0134] 5 mg of compound A and 200 mg of SNAC were mixed uniformly and then filled into 0 #capsules.

Example 5

[0135] 5 mg of compound A and 400 mg of SNAC were mixed uniformly and then filled into 0 #capsules.

Example 6

[0136] 5 mg of compound A, 50 mg of lauroyl-L-carnitine and 120 mg of citric acid were mixed uniformly and then filled into 0 #capsules.

Example 7

[0137] 5 mg of compound A and 100 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 8

[0138] 5 mg of compound A and 200 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 9

[0139] 5 mg of compound A and 400 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 10

[0140] 1 mg of compound A and 200 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 11

[0141] 1 mg of compound A, 200 mg of 4-CNAB and 2 mg of magnesium stearate were mixed uniformly and then compressed into tablets.

Example 12

[0142] 1 mg of compound A, 200 mg of 4-CNAB, 200 mg of microcrystalline cellulose, and 5 mg of povidone were mixed uniformly and then filled into 0 #capsules.

Example 13

[0143] 1 mg of compound A, 200 mg of 4-CNAB, 200 mg of microcrystalline cellulose, 5 mg of povidone, and 4.06 mg of magnesium stearate were mixed uniformly and then compressed into tablets.

Example 14

[0144] 1 mg of compound A, 200 mg of 4-CNAB, 200 mg of microcrystalline cellulose, and 5 mg of povidone were weighed; compound A and 4-CNAB were dissolved in water, subjected to rotary evaporation, dried, ground and pulverized; and same were mixed with the other non-active ingredients uniformly and then filled into 0 #capsules.

Example 15

[0145] 1 mg of compound A, 200 mg of 4-CNAB, 200 mg of microcrystalline cellulose, 5 mg of povidone, and 4.06 mg of magnesium stearate were weighed; compound A and 4-CNAB were dissolved in water, subjected to rotary evaporation, dried, ground and pulverized; and same were mixed with the other non-active ingredients and then compressed into tablets.

Example 16

[0146] 2 mg of compound A and 200 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 17

[0147] 3 mg of compound A and 200 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 18

[0148] 10 mg of compound A and 200 mg of 4-CNAB were mixed uniformly and then filled into 0 #capsules.

Example 19

[0149] 3 mg of compound A, 200 mg of 4-CNAB, 5 mg of povidone, 200 mg of microcrystalline cellulose, and 4 mg of magnesium stearate were mixed uniformly and then filled into 0 #capsules.

Example 20

[0150] 3 mg of compound A, 200 mg of 4-CNAB, 5 mg of povidone, 200 mg of anhydrous calcium hydrogenphosphate, and 4 mg of magnesium stearate were mixed uniformly and then filled into 0 #capsules.

Example 21

[0151] {circle around (1)} 3 mg of compound A and 200 mg of 4-CNAB were mixed uniformly.

[0152] {circle around (2)} 3 mg of propylene glycol monolaurate and 3 mg of polyethylene glycol 300 were absorbed by and dispersed with 200 mg of anhydrous calcium hydrogenphosphate.

[0153] {circle around (3)} The samples from the above two steps were mixed uniformly.

[0154] {circle around (4)} 1 mg of magnesium stearate was added, and the mixture was mixed uniformly and then filled into 0 #capsules.

Example 22

[0155] 100 mg of compound A, 5 g of povidone K12 and 5 g of sodium caprate were completely dissolved in 100 g of purified water, then freeze-dried and passed through a 120-mesh sieve and then filled into 0 #capsules.

Example 23

[0156] 100 mg of compound A, 5 g of povidone K12 and 10 g of sodium caprate were completely dissolved in 100 g of purified water, then freeze-dried and passed through a 120-mesh sieve and then filled into 0 #capsules.

Example 24

[0157] 25 mg of compound A, 1.25 g of povidone K12 and 5 g of sodium caprate were completely dissolved in 100 g of purified water, then freeze-dried and passed through a 120-mesh sieve and then filled into 00 #capsules.

Example 25

[0158] 1 mg of compound A and 0.6 g of caprylocaproyl macrogolglyceride were completely dissolved in purified water to obtain a 10 ml solution.

Example 26

[0159] 1 mg of compound A and 1.2 g of caprylocaproyl macrogolglyceride were completely dissolved in purified water to obtain a 10 ml solution.

Example 27

[0160] 1 mg of compound A and 1.8 g of caprylocaproyl macrogolglyceride were completely dissolved in purified water to obtain a 10 ml solution.

Example 28

[0161] 1 mg of compound A and 2.4 g of caprylocaproyl macrogolglyceride were completely dissolved in purified water to obtain a 10 ml solution.

Example 29

[0162] 1 mg of compound A and 3.6 g of caprylocaproyl macrogolglyceride were completely dissolved in purified water to obtain a 10 ml solution.

Example 30

[0163] 1 mg of compound A and 0.6 g of caprylocaproyl macrogolglyceride were mixed and suspended uniformly by ultrasonic dispersion, and then filled into 0 #capsules.

Example 31

[0164] 1 mg of compound A and 1.8 g of caprylocaproyl macrogolglyceride were mixed and suspended uniformly by ultrasonic dispersion, and then filled into 0 #capsules.

Example 32

[0165] 5 mg of compound A and 3.0 g of caprylocaproyl macrogolglyceride were mixed and suspended uniformly by ultrasonic dispersion, and then filled into 0 #capsules.

Example 33

[0166] 1 mg of compound A, 3 g of caprylocaproyl macrogolglyceride and 50 mg of sodium caprate were completely dissolved in purified water to obtain a 10 ml solution.

Example 34

[0167] 1 mg of compound A, 3 g of caprylocaproyl macrogolglyceride and 75 mg of sodium caprate were completely dissolved in purified water to obtain a 10 ml solution.

Example 35

[0168] 1 mg of compound A, 3 g of caprylocaproyl macrogolglyceride and 100 mg of sodium caprate were completely dissolved in purified water to obtain a 10 ml solution.

Example 36

[0169] 1 mg of compound A, 4 g of caprylocaproyl macrogolglyceride and 200 mg of mgcapric acid were completely dissolved in purified water to obtain a 10 ml solution.

Example 37

[0170] 1 mg of compound A, 6 g of caprylocaproyl macrogolglyceride and 200 mg of mgcapric acid were completely dissolved in purified water to obtain a 10 ml solution.

Example 38

[0171] 5 mg of compound A and 50 mg of lauroyl-L-carnitine were filled into 0 #capsules.

Example 39

[0172] 5 mg of compound A and 100 mg of lauroyl-L-carnitine were filled into 0 #capsules.

Example 40

[0173] 5 mg of compound A and 250 mg of lauroyl-L-carnitine were filled into 0 #capsules.

Example 41

[0174] 5 mg of compound A and 100 mg of lauroyl-L-carnitine were filled into 0 #enteric coated capsules.

Example 42

[0175] 5 mg of compound A and 75 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 43

[0176] 5 mg of compound A and 100 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 44

[0177] 5 mg of compound A and 150 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 45

[0178] 1 mg of compound A and 75 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 46

[0179] 1 mg of compound A and 100 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 47

[0180] 1 mg of compound A and 150 mg of lauroyl-L-carnitine hydrochloride were filled into 0 #capsules.

Example 48

[0181] 1 mg of compound A and 200 mg of sodium caproate were filled into 0 #capsules.

Example 49

[0182] 1 mg of compound A and 100 mg of sodium caprylate were filled into 0 #capsules.

Example 50

[0183] 1 mg of compound A and 200 mg of sodium laurate were filled into 0 #capsules.

Example 51

[0184] 1 mg of compound A and 200 mg of sodium myristate were filled into 0 #capsules.

Example 52

[0185] 1 mg of compound A and 200 mg of sodium palmitate were filled into 0 #capsules.

Test Example 1

[0186] The physiological saline solution of compound A obtained in Example 1 was orally administered at a single dose to male Beagle dogs (3 for each preparation), venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

[0187] After a single oral administration of the capsules obtained in Example 2 to male Beagle dogs (3 for each preparation) with 5 tablets of the samples for each dog, venous blood was taken at 0, 0.083, 0.25, 0.5, 1, 2, 4, 6, 8 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00001 TABLE 1 Effect of SNAC on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1 2.60 ± 0.49 1.81 ± 0.01 Example 2 125 ± 47  3.46 ± 1.62

Results and Discussion:

[0188] By means of adding 150 mg of SNAC to the formulations, the bioavailability is significantly improved, and the absolute bioavailability is up to 3.46%.

Test Example 2

[0189] After a single oral administration of the capsules obtained in Examples 3-5 to male Beagle dogs (3 for each preparation) with 1 tablet of the samples for each dog, venous blood was taken at 0, 0.083, 0.25, 0.5, 0.75, 1, 2, 4, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00002 TABLE 2 Effect of dosage of SNAC on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 3 6.88 ± 5.8 2.18 ± 1.3 Example 4 109 ± 56 9.82 ± 3.8 Example 5 41.2 ± 22  5.60 ± 3.3

Results and Discussion:

[0190] In the case of the weight ratio of compound A to SNAC being in the range of 1:20-1:80, the bioavailability of compound A can be significantly improved, and the absolute bioavailability is better when the weight ratio thereof is 1:40.

Test Example 3

[0191] After a single oral administration of the capsules obtained in Example 6 to male Beagle dogs (3 for each preparation) with 5 tablets of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 12, 24, 28, 48 and 72 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00003 TABLE 3 Effect of formula on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1 2.60 ± 0.49 1.81 ± 0.01 Example 6 451 ± 384 6.62 ± 5.3 

Results and Discussion:

[0192] Adding 50 mg of lauroyl-L-carnitine and 120 mg of citric acid to the formulations provides a good absorption promoting effect, and the absolute bioavailability of compound A is up to 6.62%.

Test Example 4

[0193] After a single oral administration of the capsules obtained in Examples 7-9 to male Beagle dogs (3 for each preparation) with 1 tablet of the samples for each dog, venous blood was taken at 0, 0.083, 0.25, 0.5, 0.75, 1, 2, 4, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00004 TABLE 4 Effect of dosage of 4-CNAB on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1 .sup. 2.60 ± 0.49  1.81 ± 0.01 Example 7 61.7 ± 48 4.83 ± 2.7 Example 8  166 ± 54 10.5 ± 1.6 Example 9 80.7 ± 70 6.63 ± 4.5

Results and Discussion:

[0194] In the case of the weight ratio of compound A to 4-CNAB being in the range of 1:20-1:80, the bioavailability of compound A can be significantly improved, and the absolute bioavailability is better when the weight ratio thereof is 1:40.

Test Example 5

[0195] After a single oral administration of the preparation samples prepared in Examples 10-15 by different processes to male Beagle dogs (3 for each preparation) with 1 tablet of the samples for each dog, venous blood was taken at 0, 0.083, 0.25, 0.5, 1, 2, 4, 6, 8, 12, 24, 28 and 48 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00005 TABLE 5 Effect of different preparation processes on absorption of compound A Formula Preparation method C.sub.max (ng/ml) F % Example 1 Dissolving in physiological saline  2.60 ± 0.49  1.81 ± 0.01 Example 10 Mixing uniformly and then filling into capsules 15.8 ± 11  6.14 ± 4.1 Example 11 Mixing uniformly and then compressing into tablets 14.5 ± 15  5.57 ± 5.5 Example 12 Mixing uniformly and then filling into capsules 24.1 ± 19  8.57 ± 7.1 Example 13 Mixing uniformly and then compressing into tablets 22.0 ± 7.4 7.91 ± 2.9 Example 14 Compound A and 4-CNAB were dissolved in water, 18.4 ± 3.2  5.70 ± 0.46 subjected to rotary evaporation, dried, ground and pulverized, and same were mixed with other excipients and then filled into capsules Example 15 Compound A and 4-CNAB were dissolved in water, 14.2 ± 3.6 6.28 ± 1.9 subjected to rotary evaporation, dried, ground and pulverized, and same were mixed with other excipients and then compressed into tablets

Results and Discussion:

[0196] By means of adding 4-CNAB to the formulations, the absolute bioavailability of samples at different dosage forms and prepared by different preparation processes is increased significantly.

Test Example 6

[0197] After a single oral administration of the preparation samples obtained in Examples 22-24 to male Beagle dogs (3 for each preparation) with 1 tablet of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00006 TABLE 6 Effect of dosage of sodium caprate on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1 2.60 ± 0.49 1.81 ± 0.01 Example 22 1.53 ± 0.19 1.36 ± 0.15 Example 23 9.10 ± 3.7  5.59 ± 2.0  Example 24 15.9 ± 14.sup.  5.73 ± 3.3 

Results and Discussion:

[0198] In the formulations, the bioavailability of compound A is improved by sodium caprate in a dose-response manner. When the weight ratio of compound A to sodium caprate is 1:50, the bioavailability does not change significantly, while the weight ratio of compound A to sodium caprate is 1:100 and 1:200, the bioavailability is increased significantly.

Test Example 7

[0199] After a single oral administration of the preparation samples obtained in Examples 25-29 to male Beagle dogs (3 for each preparation) with 10 ml of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00007 TABLE 7 Effect of dosage of caprylocaproyl macrogolglyceride on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 25 20.0 ± 3.4 6.97 ± 2.7 Example 26 16.3 ± 4.0 6.53 ± 1.4 Example 27 17.4 ± 7.5 6.75 ± 2.6 Example 28 20.6 ± 4.9 9.38 ± 1.6 Example 29 21.9 ± 18  7.73 ± 4.6

Results and Discussion:

[0200] In the formulations, the bioavailability is significantly improved when the weight ratio of compound A to caprylocaproyl macrogolglyceride is 1:600-1:3600, and the absolute bioavailability is better when the weight ratio is 1:2400.

Test Example 8

[0201] After a single oral administration of the preparation samples obtained in Examples 25, 27 and 30-32 to male Beagle dogs (3 for each preparation), venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00008 TABLE 8 Effect of dosage forms and specification on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 25 20.0 ± 3.4 6.97 ± 2.7 Example 30 28.0 ± 11  8.63 ± 2.5 Example 27 17.4 ± 7.5 6.75 ± 2.6 Example 31 17.8 ± 4.7 6.47 ± 1.8 Example 32 65.1 ± 40  6.97 ± 4.7

Results and Discussion:

[0202] Both solutions and capsules obtained by adding caprylocaproyl macrogolglyceride to the formulations can significantly improve the bioavailability of compound A, and the improvement levels of the bioavailability of compound A are similar at the specification of 1 mg and 5 mg.

Test Example 9

[0203] After a single oral administration of the preparation samples obtained in Examples 33-35 to male Beagle dogs (3 for each preparation) with 10 ml of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00009 TABLE 9 Effect of dosage of caprylocaproyl macrogolglyceride and sodium caprate on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 33 17.9 ± 12  7.52 ± 5.1 Example 34 16.1 ± 7.3 6.95 ± 2.6 Example 35 23.2 ± 4.5 12.2 ± 2.9

Results and Discussion:

[0204] In the formulations, the bioavailability of compound A is significantly improved when the weight ratio of compound A:caprylocaproyl macrogolglyceride:sodium caprate is 1:3000:50-100, and the bioavailability is better when the weight ratio is 1:3000:100.

Test Example 10

[0205] After a single oral administration of the preparation samples obtained in Examples 36-37 to male Beagle dogs (3 for each preparation) with 10 ml of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00010 TABLE 10 Effect of dosage of caprylocaproyl macrogolglyceride and capric acid on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 36 15.0 ± 5.8 6.02 ± 1.7 Example 37 15.1 ± 1.7 7.86 ± 1.6

[0206] In the formulations, the bioavailability of compound A is significantly improved when the weight ratio of compound A:caprylocaproyl macrogolglyceride:capric acid is 1:(4000-6000):200, and the bioavailability is better when the weight ratio is 1:6000:200.

Test Example 11

[0207] After a single oral administration of the preparation samples obtained in Examples 43-45 to male Beagle dogs (3 for each preparation) with 1 tablet of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00011 TABLE 11 Effect of dosage of lauroyl-L-carnitine on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1 2.60 ± 0.49  1.81 ± 0.01 Example 38 56.6 ± 82.sup.  5.33 ± 5.9 Example 39 232 ± 124 16.7 ± 5.2 Example 40 105 ± 103 8.92 ± 8.0 Example 41 62.8 ± 13.sup.   4.05 ± 0.48

Results and Discussion:

[0208] In the formulations, the bioavailability of compound A is significantly improved when the weight ratio of compound A to lauroyl-L-carnitine is 1:10-1:50, and the bioavailability is better when the weight ratio is 1:20.

[0209] When the weight ratio of compound A to lauroyl-L-carnitine is 1:20, the bioavailability of the gastric coated capsule preparation is 4 times that of the enteric coated capsule preparation.

Test Example 12

[0210] After a single oral administration of the preparation samples obtained in Examples 42-47 to male Beagle dogs (3 for each preparation) 1 tablet of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00012 TABLE 12 Effect of dosage of lauroyl-L-camitine hydrochloride on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49  1.81 ± 0.01 Example 42 117 ± 49 11.8 ± 6.1 Example 43  90.1 ± 107 8.32 ± 9.3 Example 44 125 ± 33 8.30 ± 1.3 Example 45 25.4 ± 25  12.4 ± 8.9 Example 46 16.5 ± 8.3 9.17 ± 5.3 Example 47 24.1 ± 20  6.04 ± 4.1

Results and Discussion:

[0211] The bioavailability of compound A is significantly improved when the weight ratio of compound A to lauroyl-L-carnitine hydrochloride is 1:15-1:150, and the bioavailability is better when the weight ratio is 1:15 and 1:75.

Test Example 13

[0212] After a single oral administration of the preparation samples obtained in Examples 24 and 48-52 to male Beagle dogs (3 for each preparation) 1 tablet of the samples for each dog, venous blood was taken at 0, 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12 and 24 h, and the absolute bioavailability (F %) (relative to intravenous dose of compound A) was calculated from the area under the curve obtained from the points where the plasma concentration of compound A was taken as a function of time.

TABLE-US-00013 TABLE 13 Effect of types of fatty acid salts on absorption of compound A Formula C.sub.max (ng/ml) F % Example 1  2.60 ± 0.49 1.81 ± 0.01 Example 24 15.9 ± 14  5.73 ± 3.3  Example 48 1.80 ± 1.1 0.792 ± 0.31  Example 49  13.7 ± 4.11 1.58 ± 1.11 Example 50 3.54 ± 1.1 1.53 ± 0.31 Example 51 0.837 ± 0.48 1.22 ± 0.38 Example 52 1.48 ± 1.0 1.36 ± 0.22

Results and Discussion:

[0213] Fatty acid salts with different aliphatic chain lengths have different effects on bioavailability. Among the fatty acid salts with aliphatic chain lengths of C.sub.6-C.sub.16, only the fatty acid salts with aliphatic chain length of C.sub.10 can significantly increase the bioavailability of compound A.