title: [Studies on the chemical constituents of Lithocarpus polystachyus].
abstract: OBJECTIVE
  To study the chemical constituents from Lithocarpus polystachyus.
  
  
  METHODS
  Compounds were isolated and purified with silica gel, and there structures were identified by chemical property and spectral data.
  
  
  RESULTS
  Nine compounds were isolated as phloridzin (I), phloretin (II), dihydrochalcone-2'-beta-D-glucopyranoside (III), daucossterol (IV), beta-sitosterol (V), quercetin (VI), luteolin (VII), quercitrin (VI), oleanolic acid (IX).
  
  
  CONCLUSIONS
  Compounds II, IV - IX are isolated from this plant for the first time.
authors.affiliation: Key Laboratory of Hunan Province for Study and Utilization of Ethnic Medicinal Plant Resources, Department of Life Sciences, Huaihua University, Huaihua 418008, China.
authors.forename: Sheng-Hua
authors.initials: SH
authors.lastname: Li
authors.forename: Xian-Jin
authors.initials: XJ
authors.lastname: Wu
authors.forename: Qing-Dan
authors.initials: QD
authors.lastname: Yang
authors.forename: Yuan-Yang
authors.initials: YY
authors.lastname: Chen
authors.forename: Nan
authors.initials: N
authors.lastname: Zhou
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer; D029962:Fagaceae / Q000737:chemistry*; D047311:Luteolin / Q000737:chemistry / Q000302:isolation & purification; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D010693:Phloretin / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000975:Antioxidants; D012855:Sitosterols; C012526:quercitrin; D009828:Oleanolic Acid; D011794:Quercetin; D047311:Luteolin; D010693:Phloretin