title: [Study on the chemical constituents of Pithecellobium clypearia].
abstract: OBJECTIVE
  To study the chemical constituents of Pithecellobium clypearia.
  
  
  METHODS
  Silica gel column chromatography and Sephadex LH-20 were used to separate and purify compounds from the EtOAc soluble fraction of Pithecellobium clypearia. 9 compounds were elucidated on the basis of physicochemical properties and spectrascopic analysis.
  
  
  RESULTS
  They were identified as beta-Sitosterol (1), tritriacontane (2), 5-hydroxy-3,7,3',4'-tetramethoxyflavone (3), oleanolic acid (4), 5,4'-dihydroxy-3,7,3'-trimethoxyflavone (5), alpha-amyrin (6), luteolin (7), ursolic acid (8), luteoloside (9).
  
  
  CONCLUSIONS
  Compounds 3 and 5 are isolated from this plant for the first time.
authors: The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510665, China.
authors: Chun-ying
authors: CY
authors: Xie
authors: Le-wei
authors: LW
authors: Lin
mesh_terms: D007887:Fabaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D010232:Paraffin / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D005419:Flavonoids; C070808:tritriacontane; D009828:Oleanolic Acid; D010232:Paraffin