[EN] PIPERAZINE DERIVATIVES, THEIR PREPARATION AND USES IN THERAPY (5HT1B RECEPTOR ACTIVITY)<br/>[FR] DERIVES DE PIPERAZINE, LEUR PREPARATION ET LEURS UTILISATIONS THERAPEUTIQUES (ACTIVITE DU RECEPTEUR 5HT1B)
申请人:SMITHKLINE BEECHAM PLC
公开号:WO2002074768A1
公开(公告)日:2002-09-26
Compounds of formula (I) or a pharmaceutically acceptable salt thereof are disclosed: in which Ra is a group of formula (i) wherein P1 is phenyl, naphthyl or heteroaryl; R1 is halogen, C¿1-6?alkyl, C3-6cycloalkyl, COC1-6alkyl, C1-6alkoxy, hydroxy, hydroxyC1-6alkyl, nitro, haloC1-6alkyl, cyano, SR?6, SOR6, SO¿2R6, SO2NR6R7, CO2R?6, CONR6R7, OCONR6COR7, NR6r7, NR6COR7, NR6CO¿2R?7, NR6SO¿2R?7, NR6CONR7R8, CH¿2NR?6COR7, CH¿2NR6CO2R7, CH2NR6SO2R?7, CR6=NOR7¿ where R?6, R7 and R8¿ are independently hydrogen or C¿1-6?alkyl, a is 1, 1, 2, or 3; or R?a¿ is a group of formula (ii) where P2 is phenyl, naphthyl, heteroaryl or a 5 to 7 membered heterocyclic ring; P3 is phenyl, naphthyl or heteroaryl; R2 is a defined above for R1 in formula (I) or R2 is heteroaryl optionally substituted By C¿1-6?alkyl, halogen or COC1-6alkyl or is a 5-7 membered heterocyclic ring optionally substituted by oxo; R?3¿ is halogen, C¿1-6?alkyl, C3-6cycloalkyl, C1-6alkyl, COC1-6alkyl, hydroxy, intro, haloC1-6alkyl, cyano, CO2R?6, CONR6R7, NR6R7¿ where R?6 and R7¿ are as defined above; b and c are independently 0, 1, 2, or 3; Y is a single bond, CH¿2? or NH; X is oxygen, sulfur or N-R?5¿ where R5 is hydrogen or C¿1-6?alkyl; R?b¿ is hydrogen, halogen, C¿1-6?alkyl, haloC1-6alkyl, COC1-6alkyl or cyano; R?c¿ is hydrogen or C¿1-6?alkyl. Processes for their preparation, pharmaceutical compositions containing them and their use in therapy as 5-HT1B receptor antagonists, for diseases such as depression, are also disclosed.