The roots of Dipsacus asper have yielded two new triterpenoid saponins
, dipsacus saponins B [1] and C [2], which have been characterized by
chemical and spectral means as opyranosyl-(l-->2)-alpha-L-arabinopyran
oside[1]and -rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranoside [2].