Dipeptides from the red alga Acanthopora spicifera

Abstract

An investigation of red alga Acanthophora spicifera afforded the known peptide, aurantiamide acetate and a new diastereoisomer of this dipeptide (dia-aurantiamide acetate). This is a first report of aurantiamide acetate from a marine source and of the natural occurrence of the diastereoisomer.