title: [Isolation and characterization of polyphenols in seed of Litchi chinensis].
abstract: OBJECTIVE
  To study the chemical constituents of polyphenols in seed of Litchi chinensis.
  
  
  METHODS
  The seeds of Litchi chinensis were extracted by 65% ethanol, then the compounds were separated by repeated silica gel, polyamide and preparative TLC. The structures of polyphones isolated were identified by analysis of their spectral datas and chemical properties.
  
  
  RESULTS
  Four polyphones compounds were isolated as protocatechuic aldehyde (I), protocatechuic acid (II), daucosterol (III) and (-) -epicatichin (IV).
  
  
  CONCLUSIONS
  Compounds I , III and IV are isolated from this plant for the first time.
authors: Guangdong Food and Drug Vocational College, Guangzhou 510520, China.
authors: Ren-Liang
authors: RL
authors: Yan
authors: Zhi-Gang
authors: ZG
authors: Liu
mesh_terms: D001547:Benzaldehydes / Q000737:chemistry / Q000302:isolation & purification; D002392:Catechin / Q000737:chemistry / Q000302:isolation & purification; D002396:Catechols / Q000737:chemistry / Q000302:isolation & purification; D002855:Chromatography, Thin Layer / Q000379:methods; D000431:Ethanol; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification; D032125:Litchi / Q000737:chemistry*; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification; D059808:Polyphenols; D012639:Seeds / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D001547:Benzaldehydes; D002396:Catechols; D005419:Flavonoids; D062385:Hydroxybenzoates; D010636:Phenols; D059808:Polyphenols; D012855:Sitosterols; C009091:protocatechuic acid; D000431:Ethanol; C005581:protocatechualdehyde; D002392:Catechin; C011015:lyoniside