Isolation and Identification of Ecliptasaponin A andEcliptasaponin B from Eclipta alba (L.) Hassk

Two new triterpenoid glucosides ecliptasaponinA(Ⅲ)and ecliptasaponin B(Ⅳ)were isolated together with echinocystic acid(Ⅰ)and oleanic acid(Ⅱ) from Eclipta alba (L.)Hassk.Their structures were deduced as 3β, 16α-dihydroxy olean-12-ene-28-oic acid- 3β-O-D-glucopyra-noside(Ⅲ)and 3β-O-[β-D-glucopyranosyl( 1-4 )]-β-D-glucopyranosyl-16α-hydroxy olean-12-ene-28-oic acid 28-O-β-D-glucopyranoside(Ⅳ),based on spectral analysis and chemical evidences as wellas results of hydrolysis.