Patent number: 6525066
Abstract: 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.
Type:
Grant
Filed:
April 18, 2002
Date of Patent:
February 25, 2003
Assignee:
SATO Pharmaceutical Co., Ltd.
Inventors:
Ryoichi Fukumoto, Hiroyuki Kusakabe, Chong Chu, Hiroaki Kimura, Satoshi Yanagihara, Masatoshi Kato, Chisato Hirosawa, Seiji Ishiduka, Fusae Shizume
