New semisynthetic cardiac glycosides and their biological activity

Digitoxigenin, digitoxin, D-xylose and L-rhamnose have been used as the starting materials for the synthesis of the new cardiac glycosides: digitoxigenin 3-O-β-D-xylopyranoside and digitoxin 4‴-O-α-L-rhamnopyranoside. It has been established that the compounds obtained possess comparatively high biological activities.