Two new triterpenoid saponins from the root of Ilex pubescens.

Two new triterpenoid saponins, named ilexsaponins B4 (1) and C (2), have been isolated from the roots of Ilex pubescens. Their structures have been established as ilexgenin B 3-O-α-l-arabinopyranosyl-(2 → 1)-β-d-glucopyranosyl-(2 → 1)-β-d-xylopyranoside (1) and 3-O-β-d-xylopyranosyl spathodic acid 28-β-d-glucopyranosyl ester (2) by means of spectral and chemical methods. [ABSTRACT FROM AUTHOR]