Two new compounds from Cynanchum amplexicaule

Abstract

A new phenolic glycoside, sinapic acid 4-O-β-d-(6′-sinapoyl)glucopyranoside (1) and a new sucrose ester, 6,6′-di-O-sinapoylsurcose (3), were isolated from the roots of Cynanchum amplexicaule (Sieb. et Zucc.), along with two known compounds, 6-O-[E]-sinapoyl-d-glucopyranoside (2) and sibricose A₁ (4). Their structures were elucidated on the basis of both chemical and spectroscopic methods.

Keywords:

• Cynanchum amplexicaule (Sieb. et Zucc.)
• 6,6′-Di-O-sinapoylsurcose
• sinapic acid 4-O-β-d-(6′-sinapoyl)glucopyranoside
• 6-O-[E]-sinapoyl-d-glucopyranoside
• sibricose A₁

Acknowledgements

This research work was financially supported by the National Natural Science Foundation of China, Project NO. 30672612.