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Two new steroidal glycosides from Cynanchum amplexicaule |
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| Authors: | Gang Chen Sha Yi Hui-Ming Hua Xuan Lu |
| Affiliation: | 1. School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang , 110016 , China;2. Key Laboratory of Structure-Based Drug Design &3. Discovery, Ministry of Education, Shenyang Pharmaceutical University , Shenyang , 110016 , China;4. Department of Instrumental Analysis , Shenyang Pharmaceutical University , Shenyang , 110016 , China |
| 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 (1) and stauntogenin -3-O-α-l-oleandropyranosyl-(1 → 4)-O-β-d-digitoxopyranosyl-(1 → 4)-O-β-d-oleandropyranoside (2) by spectroscopic analysis including 1D and 2D NMR experiments. |
| Keywords: | Cynanchum amplexicaule C21 steroidal glycosides 2,6-dideoxy-pyranoses |