申请人:Suzuki Yuichi
公开号:US20080119518A1
公开(公告)日:2008-05-22
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 C
1-6
alkyl group or a C
1-6
alkoxy group, etc.]
本发明提供了一种由式(1)表示的化合物或其药学上可接受的盐,或其水合物(前提是排除所有R4a、R4b和R4c均为氢原子的化合物):[其中R1表示氢原子,R2表示氢原子,R3表示式:其中R4a、R4b和R4c相同或不同,且每个表示氢原子、C1-6烷基或C1-6烷氧基等。]