Chemical and toxicological studies on bracken fern, Pteridium aquilinum var. latiusculum. III. Further characterization of pterosins and pterosides, sesquiterpenes and the glucosides having 1-indanone skeleton, from the rhizomes.

Abstract

Four pterosins, illudoid sesquiterpenes, and nine pterosides, the glucosides, were isolated from the rhizomes of Pteridium aquilinum var. latiusculum. The stereostructures of the new compounds were elucidated by chemical and physical methods based on the structures established for the compounds obtained from the fronds.