title: New 14-hydroxy-taxane and 2alpha,20-epoxy-11(15-->1)abeotaxane from the needles of Taxus canadensis.
abstract: Two new taxanes were isolated from the needles of Taxus canadensis. Their structures were established as 10beta,13alpha-diacetoxytaxa-4(20),11-diene-5alpha,9alpha,14beta-triol (1) and 4alpha,13alpha-diacetoxy-2alpha,20-epoxy-11(15-->1)abeotaxa-11,15-diene-5alpha,7beta,9alpha,10beta-tetraol (2) on the basis of a spectroscopic analysis.
authors.affiliation: Department of Medicinal Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, Shijiazhuang, PR China. shiqingwen@hebmu.edu.cn
authors.forename: Qing-Wen
authors.initials: QW
authors.lastname: Shi
authors.forename: Mei
authors.initials: M
authors.lastname: Dong
authors.forename: Chang-Hong
authors.initials: CH
authors.lastname: Huo
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Su
authors.forename: Cun-Fang
authors.initials: CF
authors.lastname: Li
authors.forename: Xi-Ping
authors.initials: XP
authors.lastname: Zhang
authors.forename: Yu-Fang
authors.initials: YF
authors.lastname: Wang
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Kiyota
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification; D004852:Epoxy Compounds / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D043823:Taxoids / Q000737:chemistry* / Q000302:isolation & purification; D020946:Taxus / Q000737:chemistry*
chemical_list: D004224:Diterpenes; D004852:Epoxy Compounds; D043823:Taxoids