title: [Study on chemical constituents of Ixeris chinensis].
abstract: OBJECTIVE
  To study the chemical constituents of Ixeris chinensis.
  
  
  METHODS
  The chemical constituents of Ixeris chinensia were isolated and purified by silica gel. LH-20 column chromatography and preparation HPLC etc. Their structures were identified b) means of spectra, in same cases by direct comparison with authentic samples.
  
  
  RESULTS
  Ten compounds were obtained and identified as luteolin (1), luteolin-7-O-beta-D-glucopyranoside (2), apigenin-7-O-beta-D-glucopyrano side (3), luteolin-7-O-beta-D-glucopyranoside acatate (4), 3beta-(beta-D-glucopyranosyloxy) -8beta- (p-hydroxyphenylacetyloxy) -guaia-4 (15), 10 (14), 11 (13) -trien-1alpha, 5beta, 6beta, 7alphaH-12, 6-olide (5), beta- (beta-D-glucopyranosyloxy) -8beta- (2-hydroxy-3-methylbutanoyloxy) -guaia-4 (15),10 (14), 11 (13) -trien-1alpha, 5beta, 6beta,7alphaH-12,6-olide (6), 5, 3', 4'-trihydroxy-7-methoxyflavone (7), apigenin (8), 5-hydroxy-7,4'- dimethoxyflavone (9), 5, 7, 4'- trimethoxyflavone (10).
  
  
  CONCLUSIONS
  Compounds (5, 6, 7, 9, 10) are isolated from this plant for the first time.
authors.affiliation: College of Traditional Mongolian Medicine, Inner Mongolia University for Nationalities, Tongliao 028000, China. qishanwu@126.com
authors.forename: Qi-Shi-San
authors.initials: QS
authors.lastname: Wu
authors.forename: Qing-Hu
authors.initials: QH
authors.lastname: Wang
authors.forename: Yin-Tai
authors.initials: YT
authors.lastname: Na
mesh_terms: D047310:Apigenin / Q000032:analysis* / Q000737:chemistry; D019659:Asteraceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis* / Q000737:chemistry; D005960:Glucosides / Q000032:analysis / Q000737:chemistry; D047311:Luteolin / Q000032:analysis / Q000737:chemistry
chemical_list: D005419:Flavonoids; D005960:Glucosides; C044998:apigenin dimethylether; C103112:5,7,4'-trimethylapigenin; D047310:Apigenin; C066408:luteolin-7-glucoside; D047311:Luteolin