Oxyiminoalkanoic acid derivatives

1. A method for treating sydrome X which comprises administering a pharmaceutically effective amount of the compound represented by the formula of:

wherein R 1 is an optionally substituted thiazolyl, oxazolyl or oxadiazolyl group;

X is a bond, —CO—, —CH(OH)— or a group represented by —NR 6 —

wherein R 6 is a hydrogen atom or an optionally substituted alkyl group;

n is an integer of 1 to 3;

Y is an oxygen atom, a sulfur atom, —SO—, —SO 2 — or a group represented by —NR 7 —

wherein R 7 is a hydrogen atom or an optionally substituted alkyl group;

ring A is a benzene ring optionally having additional one to three substituents;

p is an integer of 1 to 8;

R 2 is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; q is an integer of 0 to 6;

m is 0 or 1;

R 3 is a hydroxy group,

OR 8 or NR 9 R 10

wherein R 8 is an optionally substituted hydrocarbon group and

wherein R 9 and R 10 are the same or different groups which are selected from a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group and an optionally substituted acyl group or R 9 and R 10 combine together to form a ring;

R 4 and R 5 are the same or different groups which are selected from a hydrogen atom and an optionally substituted hydrocarbon group wherein R 4 may form a ring with R 2 ;

or a salt thereof.

2. A pharmaceutical composition comprising

(1) a compound represented by the formula of

 wherein R 1 is an optionally substituted thiazolyl, oxazolyl or oxadiazolyl group;

X is a bond, —CO—, —CH(OH)— or a group represented by —NR 6 —

wherein R 6 is a hydrogen atom or an optionally substituted alkyl group;

n is an integer of 1 to 3;

Y is an oxygen atom, a sulfur atom, —SO—, —SO 2 — or a group represented by —NR 7 —

wherein R 7 is a hydrogen atom or an optionally substituted alkyl group;

ring A is a benzene ring optionally having additional one to three substituents;

p is an integer of 1 to 8;

R 2 is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group;

q is an integer of 0 to 6;

m is 0 or 1;

R 3 is a hydroxy group,

OR 8 or NR 9 R 10

wherein R 8 is an optionally substituted hydrocarbon group and wherein

R 9 and R 10 are the same or different groups which are selected from a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group and an optionally substituted acyl group or R 9 and R 10 combine together to form a ring;

R 4 and R 5 are the same or different groups which are selected from a hydrogen atom and an optionally substituted hydrocarbon group wherein R 4 may form a ring with R 2 ;

or a salt thereof;

(2) one or more concomitant agents selected from the group consisting of a diabetes mellitus-treating agent, a diabetic complication-treating agent, an antihyperlipemic agent, a hypotensive agent, an anti-obesity agent, a diuretic, a chemotherapeutic agent and an immunotherapeutic agent; and

(3) a pharmaceutically acceptable carrier.

3. The pharmaceutical composition according to claim 2 wherein the diabetes mellitus-treating agent is selected from the group consisting of an insulin formulation, an insulin sensitivity enhancing agent, an α-glucosidase inhibitor, a biguanide, a sulfonylurea, insulin secretion-promoting agent, amyrin agonist and phosphotyrosinphosphatase inhibitor.

4. The pharmaceutical composition according to claim 2 wherein the diabetic complication-treating agent is selected from the group consisting of an aldose reductase inhibitor, a neurotrophic factor, PKC inhibitor, AGE inhibitor, an active oxygen quenching agent and a cerebrovascular dilating agent.

5. The pharmaceutical composition according to claim 2 wherein the antihyperlipemic agent is selected from the group consisting of a statin-based compound, a squalene synthetase inhibitor and a fibrate compound.

6. The pharmaceutical composition according to claim 2 wherein the hypotensive agent is selected from the group consisting of an angiotensin converting enzyme inhibitor and an angiotensin II antagonist.

7. The pharmaceutical composition according to claim 2 wherein the anti-obesity agent is selected from the group consisting of central antiobesity agent, a pancreatic lipase inhibitor, β3 agonist, a peptide-based appetite-suppressing agent and a cholecystokinin agonist.

8. The pharmaceutical composition according to claim 2 wherein the diuretic is selected from the group consisting of a xanthine derivative, a thiazide formulation, antialdosterone formulation, a decarboxylase inhibitor, a chlorbenzenesulfonamide formulation, azosemide, isosorbide, ethacrynic acid, piretanide, bumetanide and furosemide.

9. The pharmaceutical composition according to claim 2 wherein the chemotherapeutic agent is selected from the group consisting of a alkylating agent, a metabolism antagonist, an anticancer antibiotic, a vegetable-derived anticancer agent, cisplatin, carboplatin and etoposide.

10. The pharmaceutical composition according to claim 2 wherein the immunotherapeutic agent is selected from the group consisting of a microorganism or bacterial component, a polysaccharide having immune potentiating activity, a cytokine obtained by a gene engineering technology and a colony stimulating factor.

11. A method for treating diabetes mellitus which comprises administering to a mammal in need thereof,

(1) a pharmaceutically effective amount of the compound represented by the formula of

 wherein R 1 is an optionally substituted thiazolyl, oxazolyl or oxadiazolyl group;

X is a bond, —CO—, —CH(OH)— or a group represented by —NR 6 —

wherein R 6 is a hydrogen atom or an optionally substituted ailcyl group;

n is an integer of 1 to 3;

Y is an oxygen atom, a sulfur atom, —SO—, —SO 2 — or a group represented by —NR 7 —

wherein R 7 is a hydrogen atom or an optionally substituted alkyl group;

ring A is a benzene ring optionally having additional one to three substituents;

p is an integer of 1 to 8;

R 2 is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group;

q is an integer of 0 to 6;

m is 0 or 1;

R 3 is a hydroxy group,

OR 8 or NR 9 R 10

wherein R 8 is an optionally substituted hydrocarbon group and wherein

R 9 and R 10 are the same or different groups which are selected from a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group and an optionally substituted acyl group or R 9 and R 10 combine together to form a ring;

R 4 and R 5 are the same or different groups which are selected from a hydrogen atom and an optionally substituted hydrocarbon group wherein R 4 may form a ring with R 2 ;

or a salt thereof; in combination with

(2) one or more concomitant agents selected from the group consisting of a diabetes mellitus-treating agent, a diabetic complication-treating agent, an antihyperlipemic agent, a hypotensive agent, an anti-obesity agent, a diuretic, a chemotherapeutic agent and an immunotherapeutic agent.

12. The method according to claim 11 wherein the diabetes mellitus-treating agent is selected from the group consisting of an insulin formulation, an insulin sensitivity enhancing agent, an α-glucosidase inhibitor, a Biguanide, a sulfonylurea, insulin secretion-promoting agent, amyrin agonist and phosphotyrosinphosphatase inhibitor.

13. The method according to claim 11 wherein the diabetic complication-treating agent is selected from the group consisting of an aldose reductase inhibitor, a neurotrophic factor, PKC inhibitor, AGE inhibitor, an active oxygen quenching agent and a cerebrovascular dilating agent.

14. The method according to claim 11 wherein the antihyperlipemic agent is selected from the group consisting of a statin-based compound, a squalene synthetase inhibitor and a fibrate compound.

15. The method according to claim 11 wherein the hypotensive agent is selected from the group consisting of an angiotensin converting enzyme inhibitor and an angiotensin II antagonist.

16. The method according to claim 11 wherein the anti-obesity agent is selected from the group consisting of central antiobesity agent, a pancreatic lipase inhibitor, β3 agonist, a peptide-based appetite-suppressing agent and a cholecystokinin agonist.

17. The method according to claim 11 wherein the diuretic is selected from the group consisting of a xanthine derivative, a thiazide formulation, antialdosterone formulation, a decarboxylase inhibitor, a chlorbenzenesulfonamide formulation, azosemide, isosorbide, ethacrynic acid, piretanide, bumetanide and furosemide.

18. The method according to claim 11 wherein the chemotherapeutic agent is selected from the group consisting of a alkylating agent, a metabolism antagonist, an anticancer antibiotic, a vegetable-derived anticancer agent, cisplatin, carboplatin and etoposide.

19. The method according to claim 11 wherein the immunotherapeutic agent is selected from the group consisting of a microorganism or bacterial component, a polysaccharide having immune potentiating activity, a cytokine obtained by a gene engineering technology and a colony stimulating factor.