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New Alkaloids and a Tetraflavonoid from Cephalotaxus wilsoniana

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journal contribution
posted on 23.07.2004, 00:00 authored by Li-Wen Wang, Huey-Jen Su, Sheng-Zehn Yang, Shen-Jeu Won, Chun-Nan Lin
A new homoerythrina alkaloid, C-3-epi-wilsonione (1), a new tetraflavonoid, taiwanhomoflavone C (2), and a new stereoisomer of desmethylcephalotaxinone (3) have been isolated from the leaves and heartwood of Cephalotaxus wilsoniana, respectively. The structures were elucidated by spectroscopic methods. Compound 1 showed cytotoxic activity against a number of human cancer cell lines in vitro.