Eighteen new Lycopodium alkaloids, lycosquarrines A-R (1-18), and eight known alkaloids were isolated from the aerial parts of Phlegmariurus squarrosus. Compounds 1-5 and 19, identified from natural sources for the first time, are uncommon
OBJECTIVE
To investigate the chemical constituents from the whole plants of Phlegmariurus fargesii.
METHODS
Compounds were isolated by repeated silica gel column chromatography. Their structures were elucidated by spectroscopic methods and chemical correlation. The acetylcholinesterase (AChE)
12- epi-Lycopodine (1), a Lycopodium alkaloid, along with lycopodine (2) and huperzine A (3), were discovered in the mycelium of Paraboeremia sp. Lsl3KI076, a UV-irradiated strain of Paraboeremia sp. Lsl3, an endophytic fungus from Lycopodium serratum Thunb. var. longipetiolatum Spring.
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