title: [Chemical constituents of Clerodendrum trichotomum Leaves].
abstract: OBJECTIVE
  To investigate the chemical constituents of the leaves of Clerodendrum trichotomum.
  
  
  METHODS
  The chemical constituents of petroleum ether extract of the leaves of Clerodendrum trichotomum were isolated and purified by various chromatographic techniques, such as silica gel, ODS, Sephadex LH-20, semi-preparative HPLC and recrystallization. The structures of these isolated compounds were identified by spectroscopic analysis (1 H-NMR,13 C-NMR,2D-NMR and MS).
  
  
  RESULTS
  Ten compounds were isolated and identified from petroleum ether extract, containing four triterpenes, lupeol(1), friedelin(2), betulinic acid(3) and taraxerol(4); four sterols, 22-dehydroclerosterol(5), clerosterol(6), stigmasterol(7) and sitosterol(8); one diterpenoid, transphytol(9), and one alkaloid, 1H-indole-3-carboxylic acid(10).
  
  
  CONCLUSIONS
  Compound 10 is obtained from the genus Clerodendrum for the first time, and seven compounds (1,3-4, and 7-10) are firstly isolated from this plant.
authors: Hai-jun
authors: HJ
authors: Hu
authors: Qing
authors: Q
authors: Liu
authors: Ying-bo
authors: YB
authors: Yang
authors: Li
authors: L
authors: Yang
authors: Zheng-tao
authors: ZT
authors: Wang
mesh_terms: D032409:Clerodendrum; D007211:Indoles; D009828:Oleanolic Acid / Q000031:analogs & derivatives; D053978:Pentacyclic Triterpenes; D018515:Plant Leaves; D012855:Sitosterols; D013261:Sterols; D013265:Stigmasterol; D014315:Triterpenes; D000094062:Betulinic Acid; D000094042:Lupanes
chemical_list: D007211:Indoles; D009828:Oleanolic Acid; D053978:Pentacyclic Triterpenes; D012855:Sitosterols; D013261:Sterols; D013265:Stigmasterol; D014315:Triterpenes; D000094062:Betulinic Acid; C012382:indole-3-carboxylic acid; C025473:gamma-sitosterol; C005802:taraxerol; C060796:friedelin; D000094042:Lupanes; C010480:lupeol