[EN] COMPOUNDS USEFUL FOR THE PREPARATION OF MEDICAMENTS WITH PHOSPHODIESTERASE IV INHIBITORY ACTIVITY<br/>[FR] COMPOSES UTILES POUR LA PREPARATION DE MEDICAMENTS EXERÇANT UNE ACTIVITE D'INHIBITION DE LA PHOSPHODIESTERASE IV
                        
                            
                                申请人:SIGMA TAU IND FARMACEUTI
                            
                            
                                公开号:WO2002000593A2
                            
                            
                                公开(公告)日:2002-01-03
                            
                            Formula (I) compounds are described, where R1 and R2, which may be the same or different, are halogen, hydroxy, alkoxy, cycloalkoxy; X is (CH2)n-, -CO-(CH2)n-, where n is 1 or 2, or X is -CH=; R3 is -OH, -NHOH, alkoxy; Y is H, -(CH2)nCOR4, -COR4, -NHR5, where R4 is -OH, -NHOH, alkoxy, R5 is H, alkanoyl optionally substituted by halogens; n is an integer between 1 and 4; as well as processes for their preparation and their use as medicaments; particularly as selective phosphodiesterase IV inhibitors.