[EN] PYRAZOLOPYRIMIDINONE cGMP PDE5 INHIBITORS FOR THE TREATMENT OF SEXUAL DYSFUNCTION<br/>[FR] INHIBITEURS DE cGMP PDE5 DE PYRAZOLOPYRIMIDINONE SERVANT A TRAITER LE DYSFONCTIONNEMENT SEXUEL
                        
                            
                                申请人:PFIZER LTD
                            
                            
                                公开号:WO2000024745A1
                            
                            
                                公开(公告)日:2000-05-04
                            
                            There is provided compounds of formula (IA) and of formula (IB), wherein R?1, R2, R3, R4¿ and A have meanings given in the description, which are useful in the curative and prophylactic treatment of medical conditions for which inhibition of a cyclic guanosine 3',5'-monophosphate phosphodiesterase (e.g. cGMP PDE5) is desired.