title: [Studies on triterpenoids from Potentilla chinensis].
abstract: OBJECTIVE
  To investigate the chemical constituents of Potentilla chinensis.
  
  
  METHODS
  Silica gel column chromatography and Sephadex LH - 20 gel column chromatography were employed for the isolation and purfication. The structures were identified on the basis of spectral data and chemical evidence.
  
  
  RESULTS
  Six compounds were isolated and identified as follows: 3-hydroxy-11-ursen-28, 13-olide, 11, 12-dehydroursolic acid lactone (1), 3-O-acetyl pomolic acid (2), betulinic acid (3), 3-oxo-12-ursen-28-oic acid (4), ursolic acid (5), oleanic acid (6). CONCLOUSION: All these compounds were isolated from P. chinensis for the first time, compound 1, 2, 4 were isolated from this genus for the first time.
authors.affiliation: College of Life Science and Biotechnology, Shanghai Jiaotong University, Shanghai 200246, China.
authors.forename: Qing-He
authors.initials: QH
authors.lastname: Wang
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Li
authors.forename: Yang
authors.initials: Y
authors.lastname: Shen
authors.forename: Hou-Wen
authors.initials: HW
authors.lastname: Lin
authors.forename: Wei
authors.initials: W
authors.lastname: Shu
authors.forename: Jian-Bin
authors.initials: JB
authors.lastname: Zhou
mesh_terms: D053978:Pentacyclic Triterpenes; D010946:Plants, Medicinal / Q000737:chemistry*; D031987:Potentilla / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000094062:Betulinic Acid
chemical_list: C412807:3-O-acetylpomolic acid; C523150:3-hydroxy-11-ursen-28,13-olide-11,12-dehydroursolic acid lactone; C523151:3-oxo-12-ursen-28-oic acid; D053978:Pentacyclic Triterpenes; D014315:Triterpenes; D000094062:Betulinic Acid