title: Two new steroidal glycosides from Cynanchum amplexicaule.
abstract: Two new C₂₁ steroidal glycosides were isolated from the EtOAc fraction of Cynanchum amplexicaule. Their structures were elucidated as amplexicogenin D-3-O-β-D-cymaropyranoside and stauntogenin -3-O-α-L-oleandropyranosyl-(1 → 4)-O-β-D-digitoxopyranosyl-(1 → 4)-O-β-D-oleandropyranoside by spectroscopic analysis including 1D and 2D NMR experiments.
authors.affiliation: School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Sha
authors.initials: S
authors.lastname: Yi
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Hua
authors.forename: Xuan
authors.initials: X
authors.lastname: Lu
authors.forename: Yue-Hu
authors.initials: YH
authors.lastname: Pei
mesh_terms: D031105:Cynanchum / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D012503:Saponins; D013256:Steroids; C561160:amplexicogenin B-3-O-beta-D-cymaropyranoside; C574106:stauntogenin-3-O-alpha-L-oleandropyranosyl-(1-4)-O-beta-D-digitoxopyranosyl-(1-4)-O-beta-D-oleandropyranoside