Triterpenoidal saponins from Hydrocotyle sibthorpioides

Oleanane-type triterpenoid saponins, hydrocosisaponins A-F (1-6), were isolated from Hydrocotyle sibthorpioides along with a known saponin, hydrocotyloside VII (7). Their structures were established by spectroscopic and chemical methods. The cytotoxic activity of saponins were evaluated several human tumor cell lines.