New Triterpenoid saponins from Picria fel-tarrae

Three new triterpenoid saponins, named picfeltarraenins III (1), IV (2), and V (3), together with the known compounds picfeltarraenins IA, IB (4), and II, were isolated from whole plants of Picria fel-tarrae. The structures of 1-3 were elucidated on the basis of chemical and spectral methods.