申请人:Takagaki Hidetsugu
公开号:US20090099256A1
公开(公告)日:2009-04-16
The present invention relate to a drug for treating circulatory insufficiency containing a benzopyran derivative represented by the following general formula (I):
and/or a physiologically acceptable salt thereof as an active ingredient, wherein R
1
is an alkyl group having 1 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms; and any one of R
2
, R
3
, R
4
and R
5
is a hydroxyl group, an alkoxy group, an alkenyloxy group, an alkoxy group substituted with a hydroxyl group, or an alkoxy group substituted with a carboxy group, and the others are hydrogen atoms.