title: A new metabolite with a new substitution pattern from the seeds of the Chinese Yew, Taxus mairei.
abstract: A new taxoid metabolite with a new substitution pattern was isolated from the methanol extract of the seeds of Taxus mairei, and its structure was established as 5alpha,15-dihydroxy-7beta,9alpha-diacetoxy-11(15-->1)abeo-taxa-4(20),11-dien-13-one (1) on the basis of spectral analysis including (1)H- and (13)C-NMR, HMQC, HMBC, NOESY, and confirmed by HR-FAB mass spectrometry.
authors.affiliation: Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei Province, PR China.
authors.forename: Chang-Hong
authors.initials: CH
authors.lastname: Huo
authors.forename: Yu-Fang
authors.initials: YF
authors.lastname: Wang
authors.forename: Xi-Ping
authors.initials: XP
authors.lastname: Zhang
authors.forename: Cun-Fang
authors.initials: CF
authors.lastname: Li
authors.forename: Qing-Wen
authors.initials: QW
authors.lastname: Shi
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Kiyota
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D020946:Taxus / Q000737:chemistry*
chemical_list: D010936:Plant Extracts