A novel bioactive sesquiterpene polyol ester from angled bittersweet leaves (Celastrus angulatus)

A new sesquiterpene polyol ester was isolated from the leaves of Celastrus angulatus Maxim. The structure of the compound and its stereo configuration was established mainly on the basis of 1D, 2D NMR and spectroscopic analysis as 1beta, 2beta, 9alpha-triacetoxy-8alpha-(2-hydroxy-isobutyryoxy)-15-benzoyloxy-4alpha-hydroxy-beta-dihydroagarofuran.