Isolation and Identification of α- and β-Amyrin from the Bark of Ilex latifolia Thunberg

Abstract

Two triterpenoid alcohols, i.e., α-and β-amyrin have been isolated from the unsaponifiable fraction of the ethereal extract of Ilex latifolia Thunberg (Aquifoliaceae). The ratio of the amyrin contents, i.e., α-amyrin to β-amyrin was about 4:1. Stearic acid has also been iso-lated from the fatty-acid fraction of the hydrolysates.