申请人:Allen & Hanburys Limited
公开号:US03975443A1
公开(公告)日:1976-08-17
Compounds of the general formula I: ##EQU1## in which R.sup.1 - R.sup.4 which may be the same or different represent hydrogen atoms, or C.sub.1.sub.-6 straight or branched chain alkyl, alkenyl or alkynyl group or an alkyl group substituted by a cycloalkyl group, or represents a cycloalkyl, alkoxycarbonyl, aryl, arakyl, acyl (which includes anylsulphonyl) groups in which the alkyl group or the alkyl portion of the aralkyl group may be substituted with one or more hydroxy or esterified hydroxy groups and in which the aryl groups or the aryl portion of the acyl or aralkyl group may be substituted by one or more halogen atoms, alkyl groups, hydroxy groups, alkoxy groups, trifluoromethyl, nitro, amino or dialkylamino groups, and in which R.sup.5 - R.sup.8 which may be the same or different represent hydrogen atoms or alkyl groups except that not all groups may be hydrogen, or R.sup.5 and R.sup.6 or R.sup.7 and R.sup.8 together represent a carbonyl (=O) oxygen and in any of the pairs of groups R.sup.1 /R.sup.2, R.sup.3 /R.sup.4, R.sup.5 /R.sup.6 and R.sup.7 /R.sup.8 may represent a carbocyclic or heterocyclic ring system optionally substituted by lower alkyl or aryl groups, said ring being saturated or unsaturated. These compounds have utility as oral analgesics.
通式I的化合物:##EQU1##其中R.sup.1 - R.sup.4可能相同也可能不同,代表氢原子,或C.sub.1-6直链或支链烷基,烯基或炔基或被环烷基取代的烷基,或代表环烷基,烷氧羰基,芳基,芳基烷基,酰基(包括任何磺酰基)基团,其中烷基或芳基烷基的烷基部分可以被一个或多个羟基或酯化羟基基团取代,芳基或酰基或芳基烷基的芳基部分可以被一个或多个卤素原子,烷基基团,羟基基团,烷氧基团,三氟甲基,硝基,氨基或二烷基氨基基团取代,且R.sup.5 - R.sup.8可能相同也可能不同,代表氢原子或烷基基团,除非所有基团都是氢原子,或R.sup.5和R.sup.6或R.sup.7和R.sup.8一起代表一个羰基(=O)氧原子,在R.sup.1 /R.sup.2,R.sup.3 /R.sup.4,R.sup.5 /R.sup.6和R.sup.7 /R.sup.8中的任何一对基团中,可能代表一个由较低烷基或芳基基团取代的脂环或杂环系统,所述环饱和或不饱和。这些化合物在口服止痛剂中具有应用价值。