申请人:Eisai R&D Management Co., Ltd.
公开号:EP1847535A1
公开(公告)日:2007-10-24
The present invention provides a compound represented by the formula (1) or a pharmacologically acceptable salt thereof, or a hydrate thereof (provided that a compound in which all of R4a, R4b, and R4c are hydrogen atoms is excluded.):
[wherein R1 represents a hydrogen atom, R2 represents a hydrogen atom, R3 represents the formula:
wherein R4a, R4b, and R4c are the same as or different from each other and each represents a hydrogen atom, a C1-6 alkyl group or a C1-6 alkoxy group, etc.]
本发明提供了一种由式(1)表示的化合物或其药理学上可接受的盐,或其水合物(但不包括R4a、R4b和R4c全部为氢原子的化合物):
[其中 R1 代表氢原子,R2 代表氢原子,R3 代表式(1):
其中 R4a、R4b 和 R4c 彼此相同或不同,且各自代表氢原子、C1-6 烷基或 C1-6 烷氧基等]。