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Alopecuridine和Sieboldine A是从石松科植物中分离得到的石松科生物碱,在结构特征上它们具有独特的两个相邻的季碳中心和多个稠环或桥环结构,其中后者具有重要的乙酰胆碱酯酶抑制作用
Alopecuridine and Sieboldine A are the metamorphic alkaloids isolated from the family Ixoraceae. They are structurally characterized by two distinct quaternary carbon centers and multiple condensed or bridged ring structures, of which the latter have important Acetylcholinesterase inhibition