申请人:Merck Sharp & Dohme Ltd.
公开号:US04996211A1
公开(公告)日:1991-02-26
The present invention provides a compound of formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represents a hydrocarbon or hydrocarbyloxycarbonyl group and the remaining groups R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, hydrocarbon, hydrocarbyloxycarbonyl, halogen, hydroxy or C.sub.1-6 alkoxy, or R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 may together represent the residue of a carbocyclic ring; R.sup.5 and R.sup.6 independently represent hydrogen, hydrocarbon, hydroxy or fluoro; R.sup.7 represents hydrogen or C.sub.1-3 alkyl; and R.sup.8 represents methyl or ethyl; which compounds are useful as anticonvulsant agents and in the treatment of neurodegenerative diseases.
本发明提供了式(I)的化合物:##STR1##或其药用可接受的盐,其中R.sup.1、R.sup.2、R.sup.3和R.sup.4中的一个代表烃基或烃基氧羰基基团,其余的基团R.sup.1、R.sup.2、R.sup.3和R.sup.4独立地代表氢、烃基、烃基氧羰基、卤素、羟基或C.sub.1-6烷氧基,或R.sup.1和R.sup.2或R.sup.3和R.sup.4可以一起代表环烷基环的残基;R.sup.5和R.sup.6独立地代表氢、烃基、羟基或氟;R.sup.7代表氢或C.sub.1-3烷基;R.sup.8代表甲基或乙基;这些化合物在抗抽搐剂和神经退行性疾病治疗中有用。