申请人:Fujimoto Brothers Co., Ltd.
公开号:EP1179343A1
公开(公告)日:2002-02-13
This invention relates to therapeutic agents for diabetes comprising a 2-(N-cyanoimino)thiazolidine-4-one derivatives represented by formula I or a solvate or a pharmaceutically acceptable salt thereof as an active ingredient:
wherein ring A represents a benzene ring, a condensed ring, or a heterocyclic ring, each of which may be substituted by one or more substituents selected from a straight or branched C1-C4 alkyl group, a haloalkyl group, a halogen atom or -OR5,
R1 represents a single bond, an oxygen atom, a sulfur atom, a methyne group, a straight. or branched C1 - C4 alkylene or alkenylene group optionally substituted by a phenyl group, R6-X, X-R6, X-R6-X, R6-X-R6, -C(=O)-NR7- or -NR7-C(=O)-,
R2 and R3 are the same or different and each represents a hydrogen atom, a C1 - C4 alkyl group, -OR8 or a halogen atom,
R4 represents a hydrogen atom or a C1 - C4 alkyl group,
R5 represents a hydrogen atom or a C1 - C4 alkyl group,
R6 represents a straight or branched C1 - C4 alkylene or alkenylene group,
R7 represents a hydrogen atom or a C1 - C4 alkyl group,
R8 represents a hydrogen atom, a C1 - C4 alkyl group or an aralkyl group,
X represents an oxygen atom or a sulfur atom,
the configuration of the exocyclic methylene group at 5-position of the thiazolidine ring includes both E- and Z-configuration.
本发明涉及由式 I 所代表的 2-(N-氰基亚胺)噻唑烷-4-酮衍生物或其溶液或药学上可接受的盐作为活性成分的糖尿病治疗剂:
其中环 A 代表苯环、缩合环或杂环,每个环可被一个或多个选自直链或支链 C1-C4 烷基、卤代烷基、卤素原子或 -OR5 的取代基取代、
R1 代表单键、氧原子、硫原子、甲基、任选被苯基取代的直链或支链 C1-C4 烯基或烯基、R6-X、X-R6、X-R6-X、R6-X-R6、-C(=O)-NR7-或-NR7-C(=O)-、
R2 和 R3 相同或不同,各自代表氢原子、C1-C4 烷基、-OR8 或卤素原子、
R4 代表氢原子或 C1 - C4 烷基、
R5 代表氢原子或 C1 - C4 烷基、
R6 代表直链或支链 C1 - C4 烯基或烯基、
R7 代表氢原子或 C1 - C4 烷基、
R8 代表氢原子、C1 - C4 烷基或芳烷基、
X 代表氧原子或硫原子、
噻唑烷环 5 位的外环亚甲基的构型包括 E- 和 Z- 构型。