申请人:Yamaguchi Shinpei
公开号:US20090048253A1
公开(公告)日:2009-02-19
The present invention provides a benzenoid ansamycin derivative represented by Formula (I)
(wherein R
1
and R
2
each represent a hydrogen atom or are combined together to form a bond,
R
8
represents a bond or an oxygen atom,
R
11
represents hydroxy, substituted or unsubstituted lower alkoxy or substituted or unsubstituted lower alkanoyloxy,
R
15
represents a hydrogen atom or methoxy,
R
22
represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkanoyl or substituted or unsubstituted aroyl,
R
4
and R
5
each represent a hydrogen atom or are combined together to form a bond,
R
18
represents a hydrogen atom, or the like,
R
21
represents hydroxy or the like, and
R
17
and R
19
may be the same or different and each represents a hydrogen atom, or the like) or a pharmaceutically acceptable salt thereof.