title: Taxuyunnanines S-V, new taxoids from Taxus yunnanensis.
abstract: Four new 11(15-->1)-abeotaxoids with an opened oxetane ring system, taxuyunnanines S, T, U and V (1 - 4) were isolated from the bark of Taxus yunnanensis. Taxuyunnanine S (1), is the most hydroxylated abeotaxoid discovered to date from Taxus species. The structures were determined by spectroscopic means including 1D and 2D NMR experiments.
authors.affiliation: Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunming, Yunnan, China.
authors.forename: Sheng-Hong
authors.initials: SH
authors.lastname: Li
authors.forename: Hong-Jie
authors.initials: HJ
authors.lastname: Zhang
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Niu
authors.forename: Ping
authors.initials: P
authors.lastname: Yao
authors.forename: Han-Dong
authors.initials: HD
authors.lastname: Sun
authors.forename: Harry H S
authors.initials: HH
authors.lastname: Fong
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D017239:Paclitaxel / Q000031:analogs & derivatives / Q000737:chemistry* / Q000302:isolation & purification; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D043823:Taxoids; D020946:Taxus
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D043823:Taxoids; C458621:taxuyunnanine S; C458620:taxuyunnanine T; C458623:taxuyunnanine U; C458622:taxuyunnanine V; D017239:Paclitaxel