title: [Non-taxoid chemical constituents from needles of Taxus cuspidata].
abstract: OBJECTIVE
  To study the chemical constituents in the needles of Taxus cuspidata collected from Japan.
  
  
  METHODS
  Chemical constituents were isolated by column chromatography, TLC and preparative HPLC. The structures were identified on the basis of NMR spectral analysis.
  
  
  RESULTS
  Six non-taxoids were isolated and identified as: 4-[(1E)-3-hydroxy-1-buten-1-yl]-3,5,5-trimethyl-2-cyclohexen-1-one (1), megastigm-5-ene-3, 9-diol (2), 6alpha-epoxy-7-megastigmen-9-one (3), 4-(4-hydroxyphenyl)-2-butanone (4), 12-hydroxy-alpha-cyperone (5), scutellarein-7-O-alpha-L-rhamnoside (6).
  
  
  CONCLUSIONS
  Compounds 2 - 6 are isolated from Taxus genus for the first time. Compound 1 is obtained from Taxus cuspidata for the first time.
authors.affiliation: Hebei Provincial Food and Drug Inspection Institute, Shijiazhuang 050011, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Su
authors.affiliation: Department of Medicinal Natural Product Chemistry, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: Man-Li
authors.initials: ML
authors.lastname: Zhang
authors.affiliation: Department of Medicinal Natural Product Chemistry, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: Chang-Hong
authors.initials: CH
authors.lastname: Huo
authors.affiliation: Department of Medicinal Natural Product Chemistry, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: Qing-Wen
authors.initials: QW
authors.lastname: Shi
authors.affiliation: Department of Medicinal Natural Product Chemistry, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: Yi-Bing
authors.initials: YB
authors.lastname: Wu
mesh_terms: D002851:Chromatography, High Pressure Liquid; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D043823:Taxoids; D020946:Taxus / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D043823:Taxoids