There are disclosed compounds of the formula ##STR1## where R.sub.1 is loweralkoxycarbonyl, --CH.sub.2 OH or --CONR.sub.3 R.sub.4, R.sub.3 and R.sub.4 being independently hydrogen, loweralkyl or arylloweralkyl; and R.sub.2 is --CH.sub.2 CH.dbd.CH.sub.2, ##STR2## R.sub.5 and R.sub.6 being independently loweralkyl or alternatively the group --NR.sub.5 R.sub.6 as a whole being ##STR3## R.sub.7 being hydrogen, loweralkyl or arylloweralkyl; which are useful for enhancing cholinergic activity in mammals and hence for the treatment of various memory dysfunctions characterized by decreased cholinergic function such as Alzheimer's disease.
公开了化合物的公式##STR1##其中R.sub.1是低烷氧羰基,--CH.sub.2 OH或--CONR.sub.3 R.sub.4,其中R.sub.3和R.sub.4独立地表示氢,低烷基或芳基低烷基; R.sub.2是--CH.sub.2 CH.dbd.CH.sub.2,##STR2## R.sub.5和R.sub.6独立地表示低烷基或作为整体的--NR.sub.5 R.sub.6代表##STR3##R.sub.7表示氢,低烷基或芳基低烷基; 这些化合物对于增强哺乳动物的
胆碱能活性非常有用,因此适用于治疗各种记忆功能障碍,其特征是
胆碱能功能降低,如阿尔茨海默病。