title: [Chemical constituents of Ligularia dictyoneura].
abstract: OBJECTIVE
  To study the chemical constituents of Ligularia dictyoneura.
  
  
  METHODS
  Various chromatographic techniques were used to separate and purify the compounds. Their spectral data (MS, IR, NMR) were measured for structure elucidation.
  
  
  RESULTS
  Four sesquiterpenes were isolated from Ligularia dictyoneura and their structures were identified as ligudicin A (1), ligudicin C (2), ligudicin D (3) and isopetasin (4).
  
  
  CONCLUSIONS
  Compound 1 is a new compound, compound 2 is a new natural product, and compounds 3 and 4 are obtained from Ligularia dictyoneura for the first time.
authors.affiliation: Department of Pharmacognosy, China Pharmaceutical University, Nanjing 210038, China.
authors.forename: Ai-min
authors.initials: AM
authors.lastname: Tan
authors.forename: Hong-ping
authors.initials: HP
authors.lastname: He
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
authors.forename: Mian
authors.initials: M
authors.lastname: Zhang
authors.forename: Zheng-tao
authors.initials: ZT
authors.lastname: Wang
authors.forename: Xiao-jiang
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D012717:Sesquiterpenes; C489699:ligudicin A; C418728:isopetasin