申请人:Hoechst-Roussel Pharmaceuticals, Inc.
公开号:US04753950A1
公开(公告)日:1988-06-28
There are disclosed compounds of the formula ##STR1## where .dbd.X--Y-- is ##STR2## R.sub.4 being loweralkyl and R.sub.5 being hydrogen or loweralkyl, --Z-- is ##STR3## n is 1, 2 or 3, R.sub.1 and R.sub.2 are each independently hydrogen, loweralkyl or arylloweralkyl, and R.sub.3 is hydrogen or loweralkyl, with the proviso that when .dbd.X--Y-- is ##STR4## n is 2 or 3, R.sub.1 is hydrogen and R.sub.2 is hydrogen or loweralkyl, Z is not ##STR5## which compounds are useful for enhancing memory and for treating Alzheimer's disease.
揭示了以下化合物的结构式##STR1##其中.dbd.X--Y--为##STR2##,R.sub.4为较低的烷基,R.sub.5为氢或较低的烷基,--Z--为##STR3##,n为1、2或3,R.sub.1和R.sub.2分别独立地为氢、较低的烷基或芳基较低的烷基,R.sub.3为氢或较低的烷基,但当.dbd.X--Y--为##STR4##时,n为2或3,R.sub.1为氢,R.sub.2为氢或较低的烷基,Z不为##STR5##,这些化合物可用于增强记忆和治疗阿尔茨海默病。