title: [Chemical constituents from bark of Caragana opulens].
abstract: OBJECTIVE
  To investigate the chemical constituents of the bark of Caragana opulens.
  
  
  METHODS
  The constituents of the CH3Cl-soluble portion in the 95% ethanol extract were isolated and purified by means of chromatography. The compounds were identified by their physical characteristics and spectral features.
  
  
  RESULTS
  Eight compounds were isolated and identified as encelin(1), (+)-13-Hydroxyspathulenol(2), (+) -3alpha,9beta-aromaden dranediol(3), quercetin(4), penduletin(5), lupenol(6), Lup-20(29) -en-3-one (7), beta-sitosterol(8).
  
  
  CONCLUSIONS
  Compounds 1, 2, 5, 7 are isolated for the first time from Caragana genus.
authors.affiliation: College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China. yangzhongduo@126.com
authors.forename: Zhong-Duo
authors.initials: ZD
authors.lastname: Yang
authors.forename: An-Rong
authors.initials: AR
authors.lastname: Xiao
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Shuo
authors.initials: S
authors.lastname: Li
mesh_terms: D032602:Caragana / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D024301:Plant Bark / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes; C469684:16-hydroxylup-20(29)-en-3-one; D011794:Quercetin