PYRAZOLO[1,5-A] PYRIMIDINE COMPOUNDS AS CB1 RECEPTOR ANTAGONIST
申请人:Tanimoto Koichi
公开号:US20090258867A1
公开(公告)日:2009-10-15
The present invention provides a pyrazolo[1,5-a]pyrimidine compound, having CB1 receptor-antagonizing activity, of the following formula [I]: in which R
1
and R
2
are the same or different and each an optionally substituted aryl group etc, R
0
is hydrogen atom, an alkyl group etc, E is a group of the formula: —C(═O)— or —SO
2
—, R is a group of the following formula [i], [ii] or [iii] etc: Ring A is (a) a C
3-8
cycloalkyl group optionally fused to a benzene ring or (b) a benzene ring, Q is a single bond or a methylene group, Ring B is a 4- to 7-membered aliphatic heterocyclic group, said cyclic group binding via its ring-carbon atom to the adjacent nitrogen atom, X is sulfur atom etc, R
3
is an alkyl group optionally substituted by an alkylthio group, R
4
is hydrogen atom, an alkyl group etc, one of R
A
and R
B
is an alkyl group etc, and the other is hydrogen atom, an alkyl group etc, or a pharmaceutically acceptable salt thereof.
The present invention relates to a novel pyrazolo[1,5-a]pyrimidine compound of the formula [I]:
wherein R
1
and R
2
are the same or different and an optionally substituted aryl group etc.
Q is single bond, a methylene group or a group of the formula: —N(R
Q
)—,
R
Q
is an alkyl group,
Ring A is a substituted pyrazole ring fused to the adjacent pyrimidine ring having the following formula (A), (B) or (C),
R
3
and R
4
are the same or different and a hydrogen atom, a cyano group etc.
E is one of the following groups (i) to (v):
R
00
is an alkyl group, Q
1
is a single bond etc., Q
2
is a single bond or an alkylene group, one of R
5
and R
6
is a hydrogen atom or an alkyl group and the other is an alkyl group etc., one of R
50
and R
60
is a hydrogen atom or an alkyl group and the other is a hydrogen atom, an alkyl group etc., R
51
is an alkyl group or an optionally substituted arylsulfonyl group, R
61
is an alkylamino group or an azido group, or a pharmaceutically acceptable salt thereof.
Pyrazolo[1,5-a]pyrimidine compounds as CB1 receptor antagonists
申请人:Mitsubishi Tanabe Pharma Corporation
公开号:EP2520577A1
公开(公告)日:2012-11-07
The present invention provides pyrazolo[1,5-a]pyrimidine compounds and pharmaceutically acceptable salts thereof having CB1 receptor-antagonizing activity. These compounds, and compositions comprising the same, are hence useful in the treatment of a wide range of conditions and diseases.