Chemical and toxicological studies on bracken fern, Pteridium aquilinum var. latiusculum. II. Structures of pterosins, sesquiterpenes having 1-indanone skeleton.
Ptaquiloside, a potent carcinogen isolated from bracken fern var. : structure elucidation based on chemical and spectral evidence, and reactions with amino acids, nucleosides, and nucleotides
The structure of ptaquiloside (1), a potentcarcinogenic compound isolated from bracken fern, Pteridiumaquilinum var. latiusculum has been elucidated on the basis of chemical and spectral evidence. The dienone 3 generated from 1 under alkaline conditions was shown to be a strong alkylating agent. For the purpose of obtaining the preliminary information on chemical modification of biopolymers such as