申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP0869119A1
公开(公告)日:1998-10-07
The present invention relates to phenoxymethyl piperidine derivatives, and pharmaceutically acceptable salts and N-oxides thereof, which are sodium channel blockers, and thus exhibit useful pharmacological properties, including utility for the treatment of neuropathic pain conditions.
represented by formula I:
where:
R1 is hydrogen, (C1-4)alkyl, -(CH2)mcycloalkyl, -(CH2)mNR7R8, or -(CH2)mNR7SO2R9;
m is 1 to 3;
R7 and R8 are independently hydrogen or (C1-4)alkyl; and
R9 is (C1-4)alkyl;
R2,R3,R5, and R6 are independently hydrogen, (C1-4)alkyl, or halogen;
R4 is hydrogen, (C1-4)alkyl, hydroxy, alkyloxy, fluoroalkyloxy, halogen, or phenyl or mono- or di-substituted phenyl, the substituents selected from alkyloxy, amino, nitro or acetylamino;
provided that when R1 is hydrogen at least two of R2,R3,R4,R5, and R6 are other than hydrogen; and further provided that when R1 is methyl and R2,R3,R5 and R6 are hydrogen, R4 is other than fluoro;
or a pharmaceutically acceptable salt or N-oxide thereof, as an individual isomer or as a racemic or non-racemic mixture of isomers.
本发明涉及苯氧基甲基哌啶衍生物及其药学上可接受的盐和 N-氧化物,它们是钠通道阻滞剂,因此具有有用的药理特性,包括用于治疗神经性疼痛病症。
由式 I 表示:
其中
R1 是氢、(C1-4)烷基、-(CH2)m 环烷基、-(CH2)mNR7R8 或-(CH2)mNR7SO2R9;
m 为 1 至 3;
R7 和 R8 独立地为氢或 (C1-4)烷基;以及
R9 是 (C1-4)烷基;
R2、R3、R5 和 R6 独立地是氢、(C1-4)烷基或卤素;
R4 是氢、(C1-4)烷基、羟基、烷氧基、氟烷氧基、卤素或苯基或单取代或二取代苯基,取代基选自烷氧基、氨基、硝基或乙酰氨基;
当 R1 为氢时,R2、R3、R4、R5 和 R6 中至少有两个不是氢;当 R1 为甲基,R2、R3、R5 和 R6 为氢时,R4 不是氟;
或其药学上可接受的盐或 N-氧化物,作为单个异构体或作为异构体的外消旋或非外消旋混合物。