1-Substituted-4-(1,2-diphenylethyl)piperazine derivatives of the formula: ##SPC1## Wherein X is hydroxy, methoxy, methyl or trifluoromethyl; and R is an unsubstituted monocycloalkyl group having 6 to 8 carbon atoms or 2-methoxyphenyl; provided that when X is hydroxy, R is cyclohexyl, and when X is trifluoromethyl, R is 2-methoxyphenyl, And their pharmaceutically acceptable salts, which have excellent analgesic, anti-tussive and anti-inflammatory activities, without undesirable side effect such as narcotic activity, and a process for the preparation thereof.
1-取代的4-(1,2-二苯乙基)
哌嗪衍
生物的
化学式如下:##
SPC1## 其中X为羟基、甲氧基、甲基或三
氟甲基;R为未取代的含有6至8个碳原子的单环烷基基团或2-
甲氧基苯基;但当X为羟基时,R为环己基,当X为三
氟甲基时,R为2-
甲氧基苯基。其药用盐具有出色的镇痛、镇咳和抗炎活性,且无毒性活性等不良副作用,以及其制备方法。