title: [Studies on chemical constituents from EtOAc fraction of Sorbus tianschanica].
abstract: OBJECTIVE
  To study the chemical constituents of Sorbus tianschanica.
  
  
  METHODS
  The compounds were isolated and purified by recrystallization and chromatography with silica gel and resin. Their structures were identified by physicochemical properties and spectral analysis.
  
  
  RESULTS
  Seven compounds were isolated from the EtOH extraction and six structures were identified as benzoic acid (1), benzyl-O-beta-D-glucopyranoside (2), ursolic acid (3), 2alpha-hydroxyursolic acid (4), hyperoside (5), quercetin-3-O-glucoside (6).
  
  
  CONCLUSIONS
  Compounds 1-5 were isolated from S. tianschanica for the first time.
authors.affiliation: College of Pharmacy, Xinjiang Medical University, Urumuqi 830011, China. cjmcjn2471@yahoo.com.cn
authors.forename: Junmin
authors.initials: J
authors.lastname: Chang
authors.forename: Lingling
authors.initials: L
authors.lastname: Yang
authors.forename: Kasimu
authors.initials: K
authors.lastname: Rena
mesh_terms: D000085:Acetates / Q000737:chemistry*; D009930:Organic Chemicals / Q000032:analysis / Q000302:isolation & purification; D031994:Sorbus / Q000737:chemistry*
chemical_list: D000085:Acetates; D009930:Organic Chemicals; C007650:ethyl acetate