申请人:Hoechst-Roussel Pharmaceuticals Inc.
公开号:US05214058A1
公开(公告)日:1993-05-25
This invention relates to compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, loweralkyl, arylloweralkyl, loweralkenyl or loweralkynyl; R.sub.2 is hydrogen, loweralkyl, loweralkenyl, formyl or cyano; X is hydrogen, halogen, nitro, amino, loweralkyl, loweralkoxy or hydroxy; Y is hydrogen, loweralkyl, loweralkoxy, arylloweralkoxy, hydroxy, halogen, nitro or amino, with the proviso that when Y is hydrogen or loweralkyl, R.sub.1 is not hydrogen and R.sub.2 is not formyl; a pharmaceutically acceptable acid addition salt thereof, or where applicable, a geometric or optical isomer or racemic mixture thereof. The compounds of the invention are useful for the treatment of various memory dysfunctions characterized by a decreased cholinergic function, such as found in Alzheimer's disease and other senile dementia.
该发明涉及以下式的化合物##STR1##其中R.sub.1是氢,较低烷基,芳基较低烷基,较低烯基或较低炔基;R.sub.2是氢,较低烷基,较低烯基,甲酰基或氰基;X是氢,卤素,硝基,氨基,较低烷基,较低氧基或羟基;Y是氢,较低烷基,较低氧基,芳基较低氧基,羟基,卤素,硝基或氨基,但要注意当Y是氢或较低烷基时,R.sub.1不是氢,R.sub.2不是甲酰基;其药学上可接受的酸加盐,或在适用时,其几何或光学异构体或混合物。该发明的化合物可用于治疗由胆碱功能减少所表征的各种记忆功能障碍,如阿尔茨海默病和其他老年痴呆症。