The structures of entada saponins II and IV, isolated from the bark of Entada phaseoloides (L.) MERRILL (Leguminosae), were elucidated as 3-O-[β-D-xylopyranosyl(1→2)-α-L-arabinopyranosyl-(1→6)][β-D-glucopyranosyl(1→4)]-2-acetamido-2-deoxy-β-D-glucopyranosyl-28-O-[β-D-apiofuranosyl(1→3)-β-D-xylopyranosyl(1→2)][2-O-acetyl)-β-D-glucopyranosyl(1→4)-6-O-((6R)-6-hydroxy-2, 6-dimethyl-(2E)-2, 7-octadienoyl)-β-D-glucopyranosyl oleanolic acid (1) and entagenic acid (3).