Abstract
Three new oleanene glycosides named subprosides I-III (1-3) were isolated as the corresponding methly ester forms together with four known glucuronide saponins, soyasaponin II (4), dehydrosoyasaponin I (5), kudzusaponin A3(6) and abrisaponin I (7), from Sophorae Subprostratae Radix, the roots of Sophora subprostrata CHUX et T. CHEN(Leguminosae). The structures of subprosides I-III were characterized as 3-O-α-L-thamnopyranosyl(1→2)-β-D0-glactopyranosyl (1→2)-β-D-glucuronopyranosyl-abrisapogenol C (1), 3-O-α-L-thamnopyranosyl(1→2)-α-L-arabinopyranosyl (1→2)-β-D-glucuronopyranosyl-kudzusapogenol A (2) and 3-O-α-Lrhamnopyranosyl(1→2)-β-D-galactopyranosyl(1→2)-β-D-glucuronopyranosyl-wistariasapogenol A 30-O-β-D-glucopyranodide (3) by the chemical and spectral evidence.
