title: [Chemical constituents of bear bile].
abstract: OBJECTIVE
  To study the chemical constituents of bear bile.
  
  
  METHODS
  The compounds were isolated by repeated column HP20 macroporous adsorption resin, Sephadex LH-20, ODS and silica gel as packing materials. The structures were identified on the basis of extensive spectroscopic data analysis and by comparison of their spectral data reported.
  
  
  RESULTS
  Nine compounds were identified as 4',7-dihydroxyisoflavone (1), 4',7-dihydroxy-6-methoxyisoflavone (2), 4',6,7-trihydroxyisoflavone (3), 4'-methoxy-7-hydroxyisoflavone (4), tauroursodeoxycholic acid (5), taurochenodeoxycholic acid (6), ursodeoxycholic acid (7), chenodeoxycholic acid (8), cholesterol (9).
  
  
  CONCLUSIONS
  Compounds 1-4 were separated from bear bile for the first time.
authors.affiliation: Institute for Biomedical Research, Xiamen University, Xiamen 361005, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Luo
authors.forename: Quancheng
authors.initials: Q
authors.lastname: Chen
authors.forename: Yao
authors.initials: Y
authors.lastname: Wu
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Jiang
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Chen
authors.forename: Xiaokun
authors.initials: X
authors.lastname: Zhang
authors.forename: Haifeng
authors.initials: H
authors.lastname: Chen
mesh_terms: D000818:Animals; D001646:Bile / Q000737:chemistry*; D005704:Gallbladder / Q000737:chemistry*; D008516:Medicine, Chinese Traditional; D001503:Ursidae / Q000378:metabolism