A. Espada et R. Riguera, BOUSSINGOSIDE-E, A NEW TRITERPENOID SAPONIN FROM THE TUBERS OF BOUSSINGAULTIA-BASELLOIDES, Journal of natural products, 60(1), 1997, pp. 17-19
A new triterpenoid saponin, boussingoside E (1), D-glucuronopyranosyl]
-20(29)-ene-30-norhederagenin 28-O-(beta-D-glucopyranosyl) ester, alon
g with quinoasaponin-9 (2) were isolated as sodium/choline salts from
the methanolic extracts of the tubers of Boussingaultia baselloides H.
B. K. (syn.: Anredera baselloides Baill.). Their structures were esta
blished on the basis of 1D and 2D NMR (DQFCOSY, HOHAHA, HSQC, HMBC, an
d ROESY spectra), FABMS experiments, and hydrolysis.