Chen Gang, Yi Sha, Hua Hui-Ming, Lu Xuan, Pei Yue-Hu
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
J Asian Nat Prod Res. 2012;14(6):559-63. doi: 10.1080/10286020.2012.680442.
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.
从白薇的乙酸乙酯部位分离得到两个新的C₂₁甾体糖苷。通过包括一维和二维核磁共振实验在内的光谱分析，确定它们的结构分别为白薇苷元D - 3 - O - β - D - 磁麻糖苷和斯唐托苷元 - 3 - O - α - L - 夹竹桃吡喃糖基 - (1→4) - O - β - D - 洋地黄毒吡喃糖基 - (1→4) - O - β - D - 夹竹桃吡喃糖苷。
