title: [Studies on chemical constituents from seeds of Euryale ferox].
abstract: OBJECTIVE
  To study the chemical constituents from the seeds of Euryale ferox.
  
  
  METHODS
  The chemical constituents were isolated by silica gel column, Sephadex LH-20 and their structures were identified by physico-chemical and spectral analysis.
  
  
  RESULTS
  Seven compounds were purified from the 95% ethanol extract. These constituents were elucidated as protocatechuic acid (1), gallic acid (2), gallic acid ethyl ester(3),5 ,7-dihydroxychromone(4), β-sitosterol(5), daucosterol(6), and 5,7-dihydroxy-6,4'-dimethoxyflavone(7), respectively.
  
  
  CONCLUSIONS
  All compounds are isolated from this plant for the first time.
authors.forename: Hai-lin
authors.initials: HL
authors.lastname: Sun
authors.forename: Ya-qiong
authors.initials: YQ
authors.lastname: Zhang
authors.forename: Xiao-yan
authors.initials: XY
authors.lastname: Xie
authors.forename: Yan-yun
authors.initials: YY
authors.lastname: Che
mesh_terms: D005707:Gallic Acid; D062385:Hydroxybenzoates; D030702:Nymphaeaceae / Q000737:chemistry*; D064209:Phytochemicals / Q000737:chemistry* / Q000302:isolation & purification; D012639:Seeds / Q000737:chemistry*; D012855:Sitosterols
chemical_list: D062385:Hydroxybenzoates; D064209:Phytochemicals; D012855:Sitosterols; C009091:protocatechuic acid; C025473:gamma-sitosterol; D005707:Gallic Acid; C011015:lyoniside