title: [Study on chemical constituents of triterpenoids from Potentilla discolor].
abstract: OBJECTIVE
  To study the triterpenoids constituents in Potentilla discolor.
  
  
  METHODS
  The compounds were isolated by silica gel chromatography, macroporous resins and polyamide column chromatography from the 70% ethanol extract, and their structures were identified by spectral analysis.
  
  
  RESULTS
  Six compounds were obtained and their structures were identified as 3-O-beta-D-glucopyranosyl-(1 --> 2) -beta-D-xylopyranosyl-19a-hydroxyurs-12-en-28-acid (1), 2alpha, 3/beta, 19alpha-trihydroxyurs-12-en-28-acid (2), 3beta, 19alpha-trihydroxyurs-12-en-24, 28-acid (3), 2alpha, 3beta-dihydroxyolean-12-en-28-acid (4), 2alpha, 3alpha, 19alpha-trihydroxyurs-12-en-28-acid (5), beta-sitosterol (6).
  
  
  CONCLUSIONS
  Compounds 1 and 3 are obtained from this plant for the fisrt time.
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China. liyuyun1230@163.com
authors.forename: Yu-Yun
authors.initials: YY
authors.lastname: Li
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China.
authors.forename: Cao-Mao
authors.initials: CM
authors.lastname: Xiao
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Yao
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China.
authors.forename: Xian-Yi
authors.initials: XY
authors.lastname: Zeng
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China.
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Xiao
authors.affiliation: Jiangxi Institute of Materia Madica, Nanchang 330029, China.
authors.forename: Cai-Qing
authors.initials: CQ
authors.lastname: Zhu
mesh_terms: D002855:Chromatography, Thin Layer; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D031987:Potentilla / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: C472609:28-O-beta-D-glucopyranosylester of 20(S)-3beta,19alpha,24-trihydroxyurs-12-ene-23, 28-dioic acid; D012855:Sitosterols; D014315:Triterpenes; C077960:methyl maslinate; C025473:gamma-sitosterol; D009828:Oleanolic Acid