Vaccariside A, Novel Saponin from Vaccaria segetalis (Neck.) Garcke

A new triterpenoid saponin, vaccariside A 1 was isolated from the seeds of Vaccaricr segetalis using various chromatographic methods.The structure of compound 1 was elucidated by comprehensive spectroscopic analysis as 3-0-p-D-galactopyranosyl-(1-2)-[B-D-quinovpyranosyl-(1-4)-B-D-xylopyranosyl-(1-3)]-(3-D-glucuronopyranosyl quillaic acid 28-0-B-D-glucopyranosyl-(1-3)-B-D-xylopyranosyl-(1-A)]-a-L-rhamnopyranosyl-(1-2)-3-O-acetyl-B-D-fucopyranoside.