title: [Chemical constituents of Viola tianshanica].
abstract: OBJECTIVE
  To study the chemical constituents of Viola tianshanica.
  
  
  METHODS
  Compounds were isolated by silica column, pharmadex LH-20 column and polyamide column, and their structures were elucidated by UV, IR, ESI-MS and NMR.
  
  
  RESULTS
  Six compounds were isolated and identified as daucosterol (1), kaempferol-7-O-beta-D-glucopyranoside (2), kaempferol- 3-O-beta-D-glucopyranoside (3), isorhamnetin-3-O-beta-glucoside (4), kaempferol (5) and quercetin (6).
  
  
  CONCLUSIONS
  Compounds 2-5 were isolated from this plant for the first time.
authors.affiliation: National Institute for Control of Pharmaceutical and Biological Products, Beijing 100050, China.
authors.forename: Jiandong
authors.initials: J
authors.lastname: Yu
authors.forename: Zhong
authors.initials: Z
authors.lastname: Dai
authors.forename: Ruichao
authors.initials: R
authors.lastname: Lin
mesh_terms: D010936:Plant Extracts / Q000032:analysis*; D032413:Viola / Q000737:chemistry*
chemical_list: D010936:Plant Extracts