Novel compounds of the formula:
wherein R¹, R², R³ and R⁴ are as defined in Claim 1,
as well as individual isomers and pharmaceutically acceptable acid addition salts are described as having acetylcholine agonistic activity making them useful in the treatment of diseases of the brain, e.g. Alzheimer's disease.
Methods for the preparation of the novel compounds are also described, as well as pharmaceutical compositions containing same.
式的新型化合物:
其中 R¹、R²、R³ 和 R⁴ 如权利要求 1 所定义、
以及单个异构体和药学上可接受的酸加成盐具有
乙酰胆碱激动活性,可用于治疗脑部疾病,如阿尔茨海默病。
此外,还介绍了新型化合物的制备方法以及含有这些化合物的药物组合物。