Two new lycodine-typealkaloids, huperzinine N-oxide (1) and 8,15-dihydrohuperzinine (2) as well as five known compounds, huperzinine (3), huperzine B (4), huperzine D (5), N-demethylhuperzinine (6), and β-obscurine (7), were isolated from the club moss Lycopodium casuarinoides. The structures of 1 and 2 were elucidated by spectroscopic methods and chemical transformation. The absolute configuration
Ten new lycodine-typealkaloids, named casuarinines A–J (1–10), along with eight known analogues (11–18), were isolated from the whole plant of Lycopodiastrum casuarinoides. The new structures were established by spectroscopic methods and chemical transformations. Casuarinines A–D (1–4) and J (10) are common lycodine alkaloids possessing four connected six-membered rings, while tricyclic casuarinines
The alkaloids huperzines C and D and huperzinine fromLycopodiastrum casuarinoides
作者:Liu Jia-Sen、Huang Mei-Fen
DOI:10.1016/s0031-9422(00)89606-5
日期:1994.12
Abstract Two new Lycopodium alkaloids, huperzines C and D, were isolated from Lycopodiastrum casuarinoides along with huperzinine. The structures, inclu