A phenylpiperidine derivative or pharmaceutical acceptable salt thereof represented by formula (I):
wherein X represents CH or N; Y-Z represents CH2-O, CH2-S, CH2-CH2, CH=CH or CONR5 (wherein R5 represents hydrogen or lower alkyl); R1 represents hydrogen, lower alkyl, halogen, lower alkoxy or trifluoromethyl; and R2, R3 and R4 are the same or different and each represents hydrogen, lower alkyl or QR6 (wherein Q represents a single bond or lower alkylene, and R6 represents hydroxy, lower alkoxyalkoxy, lower alkoxy, lower alkylthio, nitro, halogen, lower alkanoyloxy, lower alkoxycarbonyl, lower alkanoyl or carboxyl).
The present invention provides novel phenylpiperidine derivatives useful as analgesics.
由式(I)代表的苯基
哌啶衍
生物或其药物可接受盐:
其中 X 代表 CH 或 N;Y-Z 代表
CH2-O、 -S、 - 、CH=CH 或 CONR5(其中 R5 代表氢或低级烷基);R1 代表氢、低级烷基、卤素、低级烷氧基或三
氟甲基;R2、R3 和 R4 相同或不同,各自代表氢、低级烷基或 QR6(其中 Q 代表单键或低级亚烷基,R6 代表羟基、低级烷氧基、低级烷氧基、低级烷
硫基、硝基、卤素、低级烷酰氧基、低级烷氧羰基、低级烷酰基或羧基)。
本发明提供了可用作镇痛剂的新型苯基
哌啶衍
生物。