Callyspongynic Acid, a Polyacetylenic Acid Which Inhibits α-Glucosidase, from the Marine Sponge <i>Callyspongia </i><i>t</i><i>runcata</i>

Abstract

A new polyacetylenic acid, callyspongynic acid (1), was isolated as an alpha-glucosidase inhibitor from the marine sponge Callyspongia truncata. Its structure was determined by spectroscopic and chemical methods.