Np. Sahu et Sb. Mahato, ANTIINFLAMMATORY TRITERPENE SAPONINS OF PITHECELLOBIUM DULCE - CHARACTERIZATION OF AN ECHINOCYSTIC ACID BISDESMOSIDE, Phytochemistry, 37(5), 1994, pp. 1425-1427
A new bisdesmodic triterpenoid saponin, dulcin was isolated from the s
eeds of Pithecellobium dulce and was identified as 3-O-[beta-D-glucopy
ranosyl lpha-L-arabinopyranosyl]-28-O-[beta-D-xylopranosyl (1-->6)-bet
a-D-glucopyranosyl]-echinocystic acid. The known oleanolic acid saponi
n P-E, oleanolic acid 3-O-beta-D-glucopyranosyl (1-->2)-alpha-L-arabin
opyranoside was also obtained. The structural features were elucidated
by a combination of spectroscopic methods and some chemical transform
ations.