Chemical and Toxicological Studies on Bracken Fern, Pteridium aquilinum var. latiusculum. II. Structures of Pterosins, Sesquiterpenes having 1-Indanone Skeleton

Abstract

The structures of twenty-four sesquiterpenes isolated from the young fronds were disclosed by chemical and physical methods. The stereostructures were established as 1-22 by degradation and correlation reactions and physical data.