ECKOLS, NOVEL PHLOROTANNINS WITH A DIBENZO-<i>p</i>-DIOXIN SKELETON POSSESSING INHIBITORY EFFECTS ON α2-MACROGLOBULIN FROM THE BROWN ALGA <i>ECKLONIA KUROME</i> OKAMURA

Abstract

Abstract Eckol, 2-phloroeckol and dieckol, novel phlorotannins with a dibenzo-p-dioxin skeleton have been isolated from the brown alga Ecklonia kurome Okamura as plasma α2-macroglobulin inhibitors and their structures have been determined on the basis of spectral data, in particular, by means of negative NOEs.