H. Miyao et al., TRITERPENE SAPONINS FROM ABRUS-CANTONIENSIS (LEGUMINOSAE) .2. CHARACTERIZATION OF 6 NEW SAPONINS HAVING A BRANCHED-CHAIN SUGAR, Chemical and Pharmaceutical Bulletin, 44(6), 1996, pp. 1228-1231
The chemical structures of abrisaponins So(1) (1), So(2) (2), D-2 (3),
D-3 (4), F (5) and SB (6), six of twenty-three saponins from Abri Her
ba, the whole plants of Abrus cantoniensis (Leguminosae), were investi
gated. They n ere elucidated to be galactopyranosyl-(1-->2)-beta-D-glu
curonopyranosyl (designated as beta-abritetraosyl) sophoradiol (1), 3-
O-beta-abritetraosyl sophoradiol 22-O-beta-D-xylopyranoside (2), 3-O-b
eta-abritetraosyl abrisapogenol D (3), 3-O-beta-abritetraosyl abrisapo
genol D 22-O-beta-D-glucopyranoside (3), 3-O-beta-abritetraosyl abrisa
pogenol F (5) and 3-O-beta-abritetraosyl soyasapogenol B (6), respecti
vely.