申请人:Hoechst-Roussel Pharmaceuticals, Inc.
公开号:US04868177A1
公开(公告)日:1989-09-19
There are disclosed compounds having the formula ##STR1## where n is 1, 2 or 3; X is hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro or trifluoromethyl R.sub.1 and R.sub.2 are each independently hydrogen, lower alkyl or arylloweralkyl, but both may not be arylloweralkyl simultaneously; R.sub.3 and R.sub.4 are each independently hydrogen, lower alkyl, arylloweralkyl, formyl or lower alkylcarbonyl, or alternatively the group --NR.sub.3 R.sub.4 taken as a whole constitutes ##STR2## stereo isomers thereof and pharmaceutically acceptable acid addition salts thereof, which are useful for the treatment of various memory dysfunctions characterized by decreased cholinergic function, such as Alzheimer's disease.
揭示了具有以下化学式的化合物##STR1##其中n为1、2或3;X为氢、低烷基、低烷氧基、卤素、羟基、硝基或三氟甲基;R.sub.1和R.sub.2分别独立地为氢、低烷基或芳基低烷基,但两者不能同时为芳基低烷基;R.sub.3和R.sub.4分别独立地为氢、低烷基、芳基低烷基、甲酰基或低烷基羰基,或者作为整体--NR.sub.3 R.sub.4组成##STR2##的立体异构体及其药学上可接受的酸盐,用于治疗由于胆碱能功能减少而表现为各种记忆功能障碍的疾病,如阿尔茨海默病。