title: [Studies on the constituents from the herba of Erigeron acer].
abstract: OBJECTIVE
  To investigate the chemical constituents of the aerial part of Erigeron acer.
  
  
  METHODS
  The chemical constituents were isolated by various columns and thin layer chromatographic methods. The structures were identified by spectral data.
  
  
  RESULTS
  Five compounds were isolated and identified as alpha-amyrin (1), beta-amyrin (2), caffeic acid (3), quercetin (4), 4'-hydroxywogonin-7-O-beta-D-glucuronic acid glycoside (5).
  
  
  CONCLUSIONS
  The five compounds are obtained from this plant for the first time. The signals of 13C-NMR of the compound(5) are reassigned by means of DEPT, HMQC, HMBC, the signals of 1H-NMR of 2" - 5"-H of the glucuronic acid moiety are assigned by means of HMBC, HMQC, 1H-1H COSY for the first time.
authors.affiliation: Changchun University of Traditional Chinese Medicine, Changchun 130117, China. yanmm595@yahoo.com.cn
authors.forename: Ming-Ming
authors.initials: MM
authors.lastname: Yan
authors.forename: Da-Qing
authors.initials: DQ
authors.lastname: Zhao
authors.forename: Shuai
authors.initials: S
authors.lastname: Shao
authors.forename: Wan-Hui
authors.initials: WH
authors.lastname: Liu
authors.forename: Sheng-Nan
authors.initials: SN
authors.lastname: Bi
authors.forename: Hai-Jing
authors.initials: HJ
authors.lastname: Wang
mesh_terms: D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer; D049919:Erigeron / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D002109:Caffeic Acids; D009828:Oleanolic Acid; D011794:Quercetin; C036380:beta-amyrin; C040048:caffeic acid