Triterpene Saponins from the Leaves of Ilex kudingcha

Nine new triterpene saponins, ilekudinosides K−S (1−9), and eight known triterpene saponins were isolated from the 70% ethanol extract of the leaves of Ilex kudingcha. The new saponins were characterized as 3-O-α-l-rhamnopyranosyl(1→2)-β-d-glucopyranosyl-α-kudinlactone (1), 3-O-β-d-glucopyranosyl(1→3)-α-l-arabinopyranosyl-β-kudinlactone (2), 3-O-α-l-rhamnopyranosyl(1→2)-α-l-arabinopyranosyl-γ-kudinlactone (3),...