title: [Study on chemical constituents of Lagotis yunnanensis].
abstract: OBJECTIVE
  To study the chemical constituents of Lagotis yunnanensis W. W. Smith.
  
  
  METHODS
  Compounds were isolated from the ethanolic extract of the title herb by silicagel column chromatography and polyamide column chromatography, and their structures were identified by physical and chemical evidences and spectral methods.
  
  
  RESULTS
  Six compounds were isolated and identified as quercetin-3-O-beta-D-glucoside (1), apigenin-7-methyl ether (2), E-cinnamic acid (3), Z-cinnamic acid (4), E-p-coumatic acid (5), Z-p-coumatic acid (6).
  
  
  CONCLUSIONS
  All the compounds are isolated from this plant for the first time.
authors.affiliation: School of Chemistry and Biology Technology, Yunnan University for Nationalities, Kunming 650031.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Yang
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yang
authors.forename: Liang
authors.initials: L
authors.lastname: Li
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D028083:Scrophulariaceae / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D010936:Plant Extracts