[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).