TRITERPENE DERIVATIVE AND AGENT FOR PREVENTING OR TREATING CHRONIC HEPATITIS C
申请人:Ishikawa Makoto
公开号:US20120251492A1
公开(公告)日:2012-10-04
Provided are a triterpene derivative represented by a general formula (I), a pharmaceutically acceptable salt thereof, and an agent for preventing or treating chronic hepatitis C comprising the triterpene derivative or the salt as an active ingredient:
[in the formula (I), R
1
represents a carboxyl group, a hydroxymethyl group, —CH
2
OSO
3
H, or
and R
2
represents —OR
3
or —O— (CH
2
) m-OR
4
, where R
3
represents a benzyl group which may be substituted with a hydroxymethyl group, a dimethylaminomethyl group, a phenylaminomethyl group, a morpholinomethyl group, a carboxyl group, or a formyl group, a C
1-6
alkyl group, a C
2-6
alkenyl group, a C
2-6
alkynyl group, or a hydroxy C
1-6
alkyl group, R
4
represents a phenyl group which may be substituted with a carboxyl group, and m represents an integer of 1 to 3, with the proviso that a case where R
1
is —CH
2
OH, and R
3
is a C
1-6
alkyl group, a C
2-6
alkenyl group, or a benzyl group is excluded].