Triterpenoid constituents of buxus papillosa

Abstract Phytochemical investigations on the leaves of Buxus papillosa have yielded a new steroidal base (-)-cyclobuxoviramine. The roots of the plant have afforded an unusual cycloartenol-type triterpenoid, (-)-buxatenone. The structures were established on the basis of 2D NMR and other spectroscopic studies.