A New C21-steroidal Cynansteroid O from Roots of Cynanchum auriculatum

A new C21-steroidal cynansteroid O (1), together with one new natural product 20-hydroxylateqingyangshengenin (2), and three known compounds (3–5) were isolated from the roots ofCynanchum auriculatum. The chemical structures were elucidated by analyses of physio-chemical properties and spectral data and compared with the published data with given references. Compounds1 –3 were isolated for the first time from the roots ofC. auriculatum.
Source: Chemistry of Natural Compounds - Category: Chemistry Source Type: research