Constituents of Fennel. X. New Chromanone and Phenylethanoid Glycosides, and threo-Epoxyanethole

Abstract

From the water-soluble portion of the methanol extract of the herbal medicine fennel, a new chromanone glycoside and a new phenylethanoid glycoside were isolated, and their structures were determined by spectral methods. An optical isomeric mixture of threo-epoxyanethole was obtained from the ether-soluble portion, and it was considered to be an auto-oxidation product of trans-anethole.