Abstract
Two saponins 1 (3-0-β-ribopyranosyl) (l-3)-α-rhamnopyranosyl (l-2)-α-arabinopyranosido-28-0-α-L-rhamnopyranosyl (l-4)-β-D-glucopyranosyl (l-6)-β-D-glucopyranoside of hederagenin) and 2 (3-0-β-ribopyranosyl (l-3)-α-rhamnopyranosyl - (l-2)-a-arabinopyranoside of hederagenin) have been isolated from Clematis montana and characterised with the help of IR, 1HNMR, 13CNMR and chemical studies. Their structures were confirmed by comparison with authentic samples.