石杉碱甲和乙是从中药蛇足石松(Lycopodium serratum Thunb)中分离得到的二个石松属生物碱,结构式为:这一生物碱具有抗胆碱酷酶作用,能增进实验性动物的记忆力。本文旨在改变其结构,以苯环代替其中的毗吮酮环,借以说明毗吮酮环是否为其 Huperzine A and B are two Lycopodium alkaloids isolated from Lycopodium serratum Thunb. The structural formula is that this alkaloid has anticholinergic effects and can enhance the memory of experimental animals. The purpose of this article is to change the structure of the benzophenone ring in place of the fluorenone ring in the benzene ring to illustrate whether the vat ketone ring is