title: [Chemical constituents from Elephantopus tomentosus].
abstract: OBJECTIVE
  To study the chemical constituents of Elephantopus tomentosus.
  
  
  METHODS
  The compounds were isolated by repeated HP20 macro porous adsorption resin column combined with Sephadex LH-20, ODS and silica gel chromatographies. The structures were identified on the basis of extensive spectroscopic data analysis and by comparison of their spectral data reported.
  
  
  RESULTS
  Eighteen compounds were identified as 2-deethoxy-2beta-hydroxyphantomolin (1), 2beta-hydroxy-2-deethoxy-8-O-deacylphantomolin-8-O-tiglinate (2), 2beta-methoxy-2-deethoxyphantomolin (3), 2beta-methoxy-2-deethoxy-8-O-deacylphantomolin-8-O-tiglinate (4), molephantin (5), molephantinin (6), tricin (7), luteolin (8), quercetin (9), 3beta-friedelinol (10), 3beta-hydroxyolean-12-en-28-oic acid (11), 3, 5-di-O-caffeoyl quinic acid (12), 3,4-di-O-caffeoyl quinic acid (13), syringaresinol-4-beta-D-glucopyranoside (14), xylogranatinin (15), byzantionoside B (16), 2'-hydroxycinnamaldehyde (17), and caffeic acid ethyl ester (18).
  
  
  CONCLUSIONS
  Compounds 9, 11, 14-18 were separated from Elephantopus for the first time.
authors.affiliation: College of Pharmacy, Xiamen University, Xiamen 361005, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Chun-Yun
authors.initials: CY
authors.lastname: Zhang
authors.forename: Ting
authors.initials: T
authors.lastname: Lin
authors.forename: Guang-Hui
authors.initials: GH
authors.lastname: Wang
authors.forename: De-Quan
authors.initials: DQ
authors.lastname: Zeng
authors.forename: Zhi-Jian
authors.initials: ZJ
authors.lastname: Guo
authors.forename: Xiu-Hong
authors.initials: XH
authors.lastname: Zou
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Chen
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D013058:Mass Spectrometry; D015394:Molecular Structure
chemical_list: D004365:Drugs, Chinese Herbal