title: [Chemical constituents from root bark of Tripterygium hypoglaucum].
abstract: OBJECTIVE
  To investigate chemical constituents of the root bark of Tripterygium hypoglaucum.
  
  
  METHODS
  Compounds were isolated by column chromatography on silica gel and Sephadex LH-20, and their structures were identified on the basis of spectral data (MS, 1H-NMR and 13C-NMR).
  
  
  RESULTS
  Twelve compounds were isolated and identified as friedelin (1), 3-oxo-olean-9(11),12-diene (2), canophyllal (3), 3-acetoxy oleanolic acid (4), triptophenolide (5), triptonoterpene methyl ether (6), tricosanoic acid (7), beta-sitosterol (8), stearic acid (9), glut-5-en-3beta,28-diol (10), palmitic acid (11) and daucostorol (12).
  
  
  CONCLUSIONS
  Compounds 1, 2, 3, 7 and 10 were isolated from T. hypoglaucum and 7 from the genus Tripterygium for the first time.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100193, China.
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Liu
authors.forename: Ronghua
authors.initials: R
authors.lastname: Zhao
authors.forename: Zhongmei
authors.initials: Z
authors.lastname: Zou
mesh_terms: D002845:Chromatography / Q000379:methods; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification; D005231:Fatty Acids, Unsaturated / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D009930:Organic Chemicals / Q000737:chemistry* / Q000302:isolation & purification*; D019308:Palmitic Acid / Q000737:chemistry / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry* / Q000378:metabolism; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D013229:Stearic Acids / Q000737:chemistry / Q000302:isolation & purification; D029757:Tripterygium / Q000737:chemistry* / Q000378:metabolism; D014315:Triterpenes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D000094042:Lupanes
chemical_list: D004224:Diterpenes; D005231:Fatty Acids, Unsaturated; D009828:Oleanolic Acid; D009930:Organic Chemicals; D019308:Palmitic Acid; D012855:Sitosterols; D013229:Stearic Acids; D014315:Triterpenes; C068166:tricosanoic acid; C031183:stearic acid; C025473:gamma-sitosterol; C035061:triptophenolide; C060796:friedelin; D000094042:Lupanes