Two new C 21 steroidal glycosides, tenacissoside L (1), tenacissoside M (2), were isolated from the stems of Marsdenia tenacissima (ROXB.) WIGHT et ARN. Their structures were elucidated, respectively, by means of chemical and spectral data, including ESI-MS, HR-ESI-MS, 1D-NMR and 2D-NMR.

Steroids U 0300 Two New C 21 Steroidal Glycosides from Marsdenia tenacissima (Roxb.) Wight et Arn. -Tenacissoside L and M, (Ia) and (Ib), resp., are isolated from the stems of the title plant. -(WANG, S.; LAI*, Y.-H.; TIAN, B.; YANG, L.; Chem.