Novel process for the preparation of pyrazolopyrimidinones
申请人:——
公开号:US20020013464A1
公开(公告)日:2002-01-31
There is provided a process for the production a compound of general formula I:
1
wherein A, R
1
, R
2
, R
3
and R
4
have meanings given in the description, which process comprises the reaction of a compound of formula II,
2
wherein R
x
is a group substitutable by an aminopyrazole, with a compound of general formula III
3
PROCESS FOR THE PREPARATION OF PYRAZOLOPYRIMIDINONES
申请人:Pfizer Limited
公开号:EP1292586A1
公开(公告)日:2003-03-19
US6667398B2
申请人:——
公开号:US6667398B2
公开(公告)日:2003-12-23
US7005520B2
申请人:——
公开号:US7005520B2
公开(公告)日:2006-02-28
[EN] PROCESS FOR THE PREPARATION OF PYRAZOLOPYRIMIDINONES<br/>[FR] PROCEDE DE PREPARATION DE PYRAZOLOPYRIMIDINONES
申请人:PFIZER LTD
公开号:WO2001098284A1
公开(公告)日:2001-12-27
There is provided a process for the production of a compound of general formula (I) wherein A, A?1, R2, R3 and R4¿ have meansings given in the description, which process comprises the reaction of a compound of formula (II), wherein Rx is a group substitutable by an aminopyrazole, with a compound of general formula (III).