title: [Isolation and structure of wilfordlonging from Tripterygium wilfordii Hook. f].
abstract: OBJECTIVE
  To study the chemical composition of Tripterygirm wilfordii Hook. f.
  
  
  METHODS
  Colunm chromatography was used to separate the chemical constituents. UV, IR, MS, HRMS, 1HNMR, 13CNMR (COM and OFR), 1H-1H COSY, 1H-13C COSY, NOESY and COLOC spectra were used to determine the structures of the isolated constituents.
  
  
  RESULTS
  Two sesquiterpene alkaloids were isolated and their structures were elucidated as wilforgine and wilfordlongine on the basis of spectral evidence.
  
  
  CONCLUSIONS
  Wilfordclonine is a new sesquiterpene alkaloid.
authors.affiliation: Fujian Institute of Medical Sciences, Fuzhou 350001, China.
authors.forename: Sui
authors.initials: S
authors.lastname: Lin
authors.forename: Yuan-chao
authors.initials: YC
authors.lastname: Li
authors.forename: Nobuko
authors.initials: N
authors.lastname: Sakurai
authors.forename: Jian-hong
authors.initials: JH
authors.lastname: Cao
authors.forename: Si-sang
authors.initials: SS
authors.lastname: Deng
authors.forename: Zhi-lin
authors.initials: ZL
authors.lastname: Xia
authors.forename: Di-lin
authors.initials: DL
authors.lastname: Xie
mesh_terms: D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry / Q000302:isolation & purification*; D029757:Tripterygium / Q000737:chemistry*
chemical_list: D007783:Lactones; D011725:Pyridines; C479288:wilfordlongine; C479287:wilforgine