title: [Studies on the alkaloids of Gynura segetum (Lour.) Merr].
abstract: Six alkaloids were isolated from Gynura segetum (Lour.) Merr. Four of them were identified. Alkaloids I and II were identified as known senecionine and seneciphylline, respectively. Alkaloids III and IV were found to be new compounds named seneciphyllinine and (E)-seneciphylline respectively. Their structures were confirmed on the basis of spectral data (UV, IR, MS, 1HNMR, 13CNMR, C-H COSY).
authors.affiliation: Academy of Military Medical Sciences, Beijing.
authors.forename: S Q
authors.initials: SQ
authors.lastname: Yuan
authors.forename: G M
authors.initials: GM
authors.lastname: Gu
authors.forename: T T
authors.initials: TT
authors.lastname: Wei
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D011763:Pyrrolizidine Alkaloids / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D011763:Pyrrolizidine Alkaloids; C013678:seneciphylline; C066417:seneciphyllinine