Dm. Zhang et al., STUDIES ON THE CONSTITUENTS OF POLYGALA-JAPONICA HOUTT .1. STRUCTURESOF POLYGALASAPONINS-I-X, Chemical and Pharmaceutical Bulletin, 43(1), 1995, pp. 115-120
Ten new oleanane-type saponins, polygalasaponins I-X, along with two k
nown saponins, bayogenin-3-O-beta-D-glucopyranoside and lobatoside B w
ere isolated from the aerial part of Polygala japonica HOUTT. The stru
ctures of these compounds were established on the basis of spectroscop
ic and chemical evidence.