Studies on the Constituents of Aloe arborescens MILL. var. natalensis BERGER. II. The Structures of Two New Aloesin Esters

Abstract

Two new aloesin esters were isolated from the fresh leaves of Aloe arborescens MILL. var. natalensis BERGER and their structures were established to be 2"-O-p-coumaroylaloesin and 2"-O-feruloylaloesin on the basis of chemical and spectral evidences. These esters are the first naturally occurring 2"-O-acylated C-glucosyl compounds.