[Studies on constituents of Ilex chinensis Sims].

Several compounds characterised as protocatechuic acid, caffeic acid, syringin, rotundic acid and pedunculoside were isolated from the leaves of Ilex chinensis, a Chinese crude drug. A novel compound cyclohexanone pedunculosyl-3,23-O-acetal was identified and proposed as a pedunculoside derivative produced in the extracting procedure.