title: [Studies on chemical constituents from flowers of Apocynum venetum].
abstract: OBJECTIVE
  To study the chemical constituents of the flowers of Apocynum venetum.
  
  
  METHODS
  Chromatographic methods were used to isolate compounds from the flowers of A. venetum and spectral methods were used to identify the structures of the isolated compounds.
  
  
  RESULTS
  Seven compounds, kaempferol (I), quercetin (II), quercetin-3-O-beta-D-glucoside (III), kaempferol-3-O-beta-D-glucoside (IV), vanillic acid (V), baimaside (VI), daucosterol (III), were isolated from the flowers of A. venetum.
  
  
  CONCLUSIONS
  Compound I, V, VI, VII were obtained from this plant for the first time.
authors.affiliation: Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.lastname: Du Li-jun
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding
authors.forename: Dong-ming
authors.initials: DM
authors.lastname: Xing
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
mesh_terms: D030010:Apocynum / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D035264:Flowers / Q000737:chemistry*; D044949:Kaempferols / Q000302:isolation & purification*; D012855:Sitosterols / Q000302:isolation & purification*; D014641:Vanillic Acid / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D044949:Kaempferols; D012855:Sitosterols; C006552:kaempferol; D014641:Vanillic Acid; C011015:lyoniside