New polychlorinated metabolites from a Barrier Reef collection of the sponge Dysidea herbacea

Abstract

Four new polychlorinated metabolites related to dysidenin and isodysidenin have been isolated from a small Barrier Reef collection of the sponge Dysidea herbacea. It has been shown that 13-demethyldysidenin and 13-demethylisodysidenin are epimeric at C5 by direct comparison of the dechlorinated derivatives of each.