申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:US05972946A1
公开(公告)日:1999-10-26
An acetamide derivative of the formula (I): ##STR1## wherein X is --0-- or --NR.sub.4 --, R.sub.1 is H, lower alkyl, lower alkenyl or cyclolalkyl-lower-alkyl, R.sub.2 is lower alkyl, cycloalkyl, substituted or unsubstituted phenyl, etc., R.sub.3 is H, lower alkyl or hydroxy-lower alkyl, R.sub.4 is H, lower alkyl, etc., R.sub.5 is H, lower alkyl, lower alkenyl, hydroxy-lower alkyl, etc., R.sub.6 is H, lower alkyl, CF.sub.3, substituted or unsubstituted phenyl, or R.sub.5 and R.sub.6 may optionally combine to form --(CH.sub.2)n--, R.sub.7 is H, halogen, lower alkyl, lower alkoxy, CF.sub.3, OH, NH.sub.2, etc., R.sub.8 is H, halogen, lower alkyl or lower alkoxy, or a pharmaceutically acceptable acid addition salt thereof. The compounds of the present invention selectively act on the peripheral-type BZ.omega..sub.3 -receptor, and show excellent pharmacological activities, and hence, they are useful in the prophylaxis or treatment of central nervous disorders such as anxiety-related diseases, depression, epilepsy, etc.
(I)式的乙酰胺衍生物:其中X为--O--或--NR.sub.4 --,R.sub.1为H、低烷基、低烯基或环烷基-低烷基,R.sub.2为低烷基、环烷基、取代或未取代的苯基等,R.sub.3为H、低烷基或羟基-低烷基,R.sub.4为H、低烷基等,R.sub.5为H、低烷基、低烯基、羟基-低烷基等,R.sub.6为H、低烷基、CF.sub.3、取代或未取代的苯基,或R.sub.5和R.sub.6可选择结合形成--(CH.sub.2)n--,R.sub.7为H、卤素、低烷基、低烷氧基、CF.sub.3、OH、NH.sub.2等,R.sub.8为H、卤素、低烷基或低烷氧基,或其药用可接受的酸盐。本发明的化合物选择性作用于外周型BZ.omega..sub.3-受体,表现出优异的药理活性,因此在预防或治疗与焦虑相关的疾病、抑郁症、癫痫等中枢神经系统紊乱方面具有用处。