The elucidation of the structure of thalicoside F, A minor oleanane glycoside from Thalictrum minus L

A new triterpenoid saponin, thalicoside F was isolated from the above-ground part of Thalictrum minus L. (Ranunculaceae family) collected in Eastern Siberia (Russia). The structure of thalicoside F was elucidated by a combination of 1D- and 2D-NMR spectroscopy and mass spectroscopy, and was determined to be C 47H 74O 17{3-β- O-[α- l-rhamnopyranosyl-(1→ 2) -β- d-glucopyranosyl-(1 → 4)-α- l-arabinopyranosyl]-11α, 12α-epoxyoleanane-28,13β-olide}. The structure of this triterpenoid saponin (C 47H 74O 17) was established using MS and NMR spectroscopy.