Cynanotophyllosides E-F, two minor pregnane glycosides from the roots of cultivated .

Cynanotophyllosides E-F, two new minor pregnane glycosides were isolated from the antidepressant active fraction of cultivated , and their structures were determined as 12--vanilloyl-deacetylmetaplexigenin 3---D-glucopyranosyl-(1→4)--D-glucopyranosyl-(1→4)--D-cymaropyranosyl-(1→4)--D-oleandropyranosyl-(1→4)--D-digitoxopyranoside, and 12--nicotinoyl-deacetylmetaplexigenin 3---D-glucopyranosyl-(1→4)--D-glucopyranosyl-(1→4)--D-cymaropyranosyl-(1→4)--D-oleandropyranosyl-(1→4)--D-cymaropyranoside respectively, with the combination of spectroscopic and chemical analysis.