The present invention relates to compounds of the formula ##STR1## wherein the broken line represents a saturated or an olefinic bond, R.sup.1 and R.sup.4 are each hydrogen or C.sub.1 to C.sub.6 alkyl, and R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 to C.sub.6 alkyl, halogen, C.sub.1 to C.sub.6 alkoxy or C.sub.1 to C.sub.6 alkylthio, and pharmaceutically acceptable salts thereof, pharmaceutical compounds containing the same, methods of preparing the foregoing compounds, and to novel intermediates in the preparation of the foregoing compounds. These compounds are useful as agents in the prevention of neuronal damage in the brain following cerebral ischemia and during the progression of Alzheimer's disease and also as anticonvulsants.
本发明涉及以下结构的化合物 ##STR1## 其中虚线代表饱和或烯烃键,R.sup.1 和 R.sup.4 分别为氢或C.sub.1 到 C.sub.6 烷基,R.sup.2 和 R.sup.3 分别为氢、C.sub.1 到 C.sub.6 烷基、卤素、C.sub.1 到 C.sub.6 烷氧基或C.sub.1 到 C.sub.6 烷基
硫基,以及其药学上可接受的盐、含有这些化合物的药物化合物、制备上述化合物的方法,以及在制备上述化合物过程中的新颖中间体。这些化合物可用作预防脑缺血后脑部神经损伤以及阿尔茨海默病进展期间的药物,并且可用作抗癫痫药物。