New alkaloids and a tetraflavonoid from Cephalotaxus wilsoniana.
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.
School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan 807, Republic of China.
Li-Wen
LW
Wang
Huey-Jen
HJ
Su
Sheng-Zehn
SZ
Yang
Shen-Jeu
SJ
Won
Chun-Nan
CN
Lin
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D032483:Cephalotaxus / Q000737:chemistry*; D004354:Drug Screening Assays, Antitumor; D004852:Epoxy Compounds / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013624:Taiwan; D014407:Tumor Cells, Cultured
D000470:Alkaloids; D000972:Antineoplastic Agents, Phytogenic; C489193:C-3-epi-wilsonione; D004852:Epoxy Compounds; D005419:Flavonoids; C489194:taiwanhomoflavone C