Thirteen previously undescribed lycodine-type Lycopodium alkaloids, namely, five alkaloids (lycocasuarines D-H) each possessing an uncommon five-membered C ring and eight Lycopodium alkaloid glycosides (casuarinosides A-H), together with a known analog, were isolated from the aerial parts of Lycopodiastrum casuarinoides (Spring) Holub ex R.D.Dixit (Lycopodiaceae). The structures of the compounds were elucidated by extensive spectroscopic analysis, single-crystal X-ray diffraction, and chemical methods. In addition, the acetylcholinesterase inhibitory activity of the isolated compounds was evaluated.

中文翻译：

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木麻黄石松中的石松碱型生物碱及其苷

从石松的地上部分分离出 13 种以前未描述的石松碱型石松生物碱，即 5 种生物碱 (lycocasuarines DH)，每一种都具有一个罕见的五元 C 环和 8 种石松生物碱糖苷 (casuarinosides AH)，以及一种已知的类似物木麻黄 (Spring) Holub ex RDDixit (Lycopodiaceae)。通过广泛的光谱分析、单晶 X 射线衍射和化学方法阐明了化合物的结构。此外，评估了分离的化合物的乙酰胆碱酯酶抑制活性。