Abstract
Five new saponins, ilexosides XLI-XLV, were isolated from fresh leaves of Ilex rotunda, and their structures were elucidated on the basis of chemical and physicochemical evidence. Ilexoside XLI is rotundic acid 28-O-α-D-glucopyranosyl (1→6)-β-D-glucopyranoside, ilexoside XLII is 23-oxorotungenic acid 28-O-β-D-glucopyranoside, ilexoside XLIII is 30-hydroxyrotundic acid 28-O-β-D-glucopyranoside, ilexoside XLIV is 3, 28, bis-O-β-D-glucopyranosyl ilexosapogenin B (3-O-β-D-glucopyranosyl 23, 30-dihydroxyursolic acid 28-O-β-D-glucopyranoside), and ilexoside XLV is 24-hydroxyrotundioic acid 28-O-β-D-glucopyranoside.
