title: Studies on chemical constituents of planted Taxus mairei (III).
abstract: From the chloroform-soluble fraction of the ethanol extracts of the whole plant of Taxus chinensis var. mairei (Lemee et Lev1), four compounds were isolated by using repeated column chromatography on silica gel and Sephadex LH-20. Based on spectroscopic data (UV, IR, ESI-MS, 1H NMR and 13C NMR), the compounds were identified as taxamairin K (1), 2alpha, 4alpha-dideacetoxy-7beta-benzoyloxy-5beta,20-epoxy-9alpha, 10beta, 13alpha, 15-tetrahydroxy-11(15-->1) abeotaxa-11-ene (2), 7beta-xylosyl-taxol (3), 10-deacetoxy-7-xylosyl-taxol (4). Among them, taxamairin K is a new compound.
authors.affiliation: Department of Phytochemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Xue-ying
authors.initials: XY
authors.lastname: Chen
authors.forename: Jing-yu
authors.initials: JY
authors.lastname: Liang
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry; D020946:Taxus / Q000737:chemistry*
chemical_list: D004224:Diterpenes; C546740:taxamairin K