A new triterpenoid saponin, xyolean-11,13(18)-dien-3beta-yl-beta-D-glu
copyrano syl-(1-->3)-beta-D-fucopyranoside, has been isolated from Bup
leurum falcatum subsp. cernuum. Its structure was mainly elucidated by
spectral analysis. Among known compounds, three other saponins and th
ree flavonoid glycosides were also isolated from the plant.