A new bidesmosidic triterpenoidal saponin of hederagenin was isolated
from the ethanolic extract of the roots of Symphytum officinale L. Its
structure was elucidated by using H-1 NMR, H-1-H-1 COSY NMR, heteronu
clear H-1-C-13 correlated spectroscopy (heteroCOSY), C-13 NMR, DEFT, F
AB mass spectrometry and chemical evidence as ta-D-glucopyranosyl-(1--
>6)-beta-D-glucopyranosyl] ester.