申请人:SATO Pharmaceutical Co., Ltd.
公开号:US06525066B2
公开(公告)日:2003-02-25
A compound represented by the following Formula (I) or a pharmaceutically acceptable salt thereof:
wherein
R1 represents a hydrogen atom or a carboxyl-protecting group,
R2 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or a hydroxyl group,
R3 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a nitro group, a cyano group, a hydroxyl group or an amino group;
R4 represents a hydrogen atom, an amino-protecting group, an alkyl group or a cycloalkyl group, and
R5 represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an alkylthio group, a hydroxyl group, an imino group or an amino group.
以下式(I)所表示的化合物或其药学上可接受的盐:
其中,R1代表
氢原子或羧基保护基,R2代表
氢原子、卤素原子、较低的烷基基团、较低的烷
氧基团或羟基基团,R3代表
氢原子、卤素原子、较低的烷基基团、较低的烷
氧基团、较低的烷基
硫基团、硝基基团、
氰基团、羟基基团或
氨基基团;R4代表
氢原子、
氨基保护基、烷基或
环烷基,R5代表
氢原子、卤素原子、烷基、
烯基、
环烷基、芳基、烷
氧基、烷
硫基、羟基、
亚胺基或
氨基基团。