title: [Study on Chemical Constituents of Lonicera japonica Bud].
abstract: OBJECTIVE
  To study the chemical constituents of Lonicera japonica bud.
  
  
  METHODS
  The compounds were isolated and repeatedly purified by silica gel column chromatography, gel column chromatography and ODS chromatography. The structures were elucidated by physicochemical properties, MS and NMR.
  
  
  RESULTS
  Eight compounds were isolated and their structures were identified as protocatechuic acid (1), 5-hydroxy-7,3',4'-trimethoxyflavone (2), hyperoside (3), 4-hydroxycinnamic acid (4), ethyl caffeate(5), apigenin (6), 5-hydroxy-6,7,8,4'-tetramethoxyflavone (7), and ethyl laurate (8).
  
  
  CONCLUSIONS
  Compounds 5, 7 and 8 are obtained from this genus for the first time.
authors.forename: Nan-hui
authors.initials: NH
authors.lastname: Jiang
mesh_terms: D047310:Apigenin; D003373:Coumaric Acids; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D047309:Flavones; D031239:Lonicera / Q000737:chemistry*; D064209:Phytochemicals / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D011422:Propionates
chemical_list: C553979:5-hydroxy-6,7,8,4'-tetramethoxyflavone; D003373:Coumaric Acids; D004365:Drugs, Chinese Herbal; D047309:Flavones; D064209:Phytochemicals; D011422:Propionates; D047310:Apigenin; C495469:p-coumaric acid