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Claims for Patent: 5,965,584

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Claims for Patent: 5,965,584

Title: Pharmaceutical composition
Abstract:Pharmaceutical composition which comprises an insulin sensitivity enhancer in combination with other antidiabetics differing from the enhancer in the mechanism of action, which shows a potent depressive effect on diabetic hyperglycemia and is useful for prophylaxis and treatment of diabetes.
Inventor(s): Ikeda; Hitoshi (Higashiosaka, JP), Sohda; Takashi (Takatsuki, JP), Odaka; Hiroyuki (Kobe, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Application Number:09/057,465
Patent Claims: 1. A pharmaceutical composition comprising an insulin sensitivity enhancer In combination with a biguanide, wherein the insulin sensitivity enhancer is selected from the group consisting of:

(1) 5-(4-(2-(3-ethyl-2-pyridyl)ethoxy)benzyl]-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(2) 5-(4-(2-(4-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(3) 5-(4-(2-(5-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(4) 5-(4-(2-(6-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(5) (R)-(+)-5-(3-(4-(2-(2-furyl)-5-methyl-4-oxazolylmethoxy)-3-methoxyphenyl)p ropyl)-2,4-oxazolidinedione or its pharmacologically acceptable salt.

(6) 5-((3,4-dihydro-2-(phenylmethyl)-2H-1-benzopyran-6-yl)methyl)-2,4thiazolid inedione or its sodium salt,

(7) 5-((4-(3-(5-methyl-2-phenyl-4-oxazolyl)-1-oxopropyl)phenyl)methyl)-2,4-thi azolidinedione or its sodium salt.

(8) 5-(2-(5-methyl-2-phenyl-4-oxazolylmethyl)benzofuran-5-ylmethyl)-2,4-oxazol idinedione,

(9) 5-(2-naphthalenylsulfonyl)-2,4-thiazolidinedione, and

(10) 5-((4-(2-methyl-2-pyridylamino)ethoxy)phenyl)-methyl)-2,4-thiazolidinedion e or its pharmacologically acceptable salt.

2. The pharmaceutical composition according to claim 1, wherein the insulin sensitivity enhancer is pioglitazone or its hydrochloride.

3. The pharmaceutical composition according to claim 1, wherein the biguanide is selected from the group consisting of phenformin, metformin, and buformin.

4. The pharmaceutical composition according to claim 1, wherein the insulin sensitivity enhancer is pioglitazone or its hydrochloride and the biguanide is metformin.

5. The pharmaceutical composition according to claim 1, which is for treatment of diabetes.

6. A method for treating diabetes in a mammal in need thereof, which comprises administering to such mammal a therapeutically effective amount of an insulin sensitivity enhancer in combination with a biguanide, wherein the insulin sensitivity enhancer is selected from the group consisting of:

(1) 5-(4-(2-(3-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(2) 5-(4-(2-(4-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(3) 5-(4-(2-(5-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(4) 5-(4-(2-(6-ethyl-2-pyridyl)ethoxy)benzyl)-2,4-thiazolidinedione or its pharmacologically acceptable salt,

(5) (R)--(+)-5-(3-(4-(2 -(2-furyl)-5-methyl-4-oxazolylmethoxy)-3-methoxyphenyl)propyl-2,4-oxazolid inedione or its pharmacologically acceptable salt,

(6) 5-((3,4-dihydro-2-(phenylmethyl)-2H-1-benzopyran-6-yl)methyl)-2,4-thiazoli dinedione or its sodium salt.

(7) 5-((4-(3-(5-methyl-2-phenyl-4-oxazolyl)-1-oxopropyl)phenyl)methyl)-2,4-thi azolidinedione or its sodium salt,

(8) 5-(2-(5-methyl-2-phenyl-4-oxazolylmethyl)benzofuran-5-ylmethyl)-2,4-oxazol idinedione,

(9) 5-(2-naphthalenylsulfonyl)-2,4-thiazolidinedione, and

(10) 5-((4-(2-methyl-2-pyridylamino)ethoxy)phenyl)-methyl)-2,4-thiazolidinedion e or its pharmacologically acceptable salt.

7. The method according to claim 6, wherein the insulin sensitivity enhancer is pioglitazone or its hydrochloride.

8. The method according to claim 6, wherein the biguanide is selected from the group consisting of phenformin, metformin and buformin.

9. The method according to claim 6, wherein the biguanide is metformin.

10. The method according to claim 6, wherein the insulin sensitivity enhancer is pioglitazone or its hydrochloride and the biguanide is metformin.

11. The pharmaceutical composition according to claim 1, wherein the insulin sensitivity enhancer is 5-((4-(2-methyl-2-pyridylamino)ethoxy)phenyl)-methyl)-2,4-thiazolidinedion e or its pharmacologically acceptable salt.

12. The method according to claim 6, wherein the insulin sensitivity enhancer is 5-((4-(2-methyl-2-pyridylamino)ethoxy)phenyl)-methyl)-2,4-thiazolidinedion e or its pharmacologically acceptable salt.

13. The method according to claim 6, wherein the insulin sensitivity enhancer and the biguanide are mixed together to form an admixture and the admixture is administered to the mammal.

14. The method according to claim 6, wherein the insulin sensitivity enhancer and the biguanide are not mixed together to form an admixture but are administered independently to the mammal.

15. The composition according to claim 1, wherein the composition consists of the insulin sensitivity enhancer and biguanide.

16. The method according to claim 6, with the proviso that the mammal is not administered a sulfonylurea agent.
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