Isolation and structure elucidation of abruslactone a: a new oleanene-type triterpene from the roots and vines of Abrus precatorius L.
Abstract
Abruslactone A. a new triterpenoid sapogenin isolated from the roots and vines of Abrus precatorius L. has been characterized by spectral and X-ray analysis as the γ-lactone of 3β,22α-dihydroxy-olean-12-en-29α-oic acid. With ring E in an unusual boat conformation.