title: [Studies on chemical constituents in stem of Dendrobium chrysotoxum].
abstract: OBJECTIVE
  To investigate the chemical constituents of Dendrobium chrysotoxum.
  
  
  METHODS
  The chemical constituents were isolated by various column chromatographic methods and structurally elucidated by spectral evidences.
  
  
  RESULTS
  Ten compounds were obtained and identified as (+)-syringare sinol (1), 5alpha, 8alpha-epidioxy-24( R)-methycholesta-6, 22-dien-3beta-ol (2), trans-3-(4-hydroxy-3-methoxyphenyl)-acrylic acid octacosyl ester (3), defusin (4), 3, 4-dihydroxy benzoic acid (5), 3, 4-dimethoxy-benzoic acid (6), vanillic acid (7), 3, 4-dimethoxy-benzoic acid methyl ester (8), 3, 5-dibromo-2-aminobenzaldehyde (9), heptadecanoic acid 2, 3-dihydroxy-propyl ester (10).
  
  
  CONCLUSIONS
  Compounds 1, 2 and 6-10 were isolated from this plant for the first time.
authors.affiliation: China Pharmaceutical University, Nanjing 210038, China.
authors.forename: Yan-Qing
authors.initials: YQ
authors.lastname: Gong
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Ai-Qun
authors.initials: AQ
authors.lastname: Liang
authors.forename: Zheng-Tao
authors.initials: ZT
authors.lastname: Wang
authors.forename: Luo-Shan
authors.initials: LS
authors.lastname: Xu
authors.forename: Zhi-Bi
authors.initials: ZB
authors.lastname: Hu
mesh_terms: D031667:Dendrobium / Q000737:chemistry*; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014641:Vanillic Acid / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D005663:Furans; D017705:Lignans; C042192:syringaresinol; D014641:Vanillic Acid