New Scalaranes from the Nudibranch <i>Glossodoris </i><i>atromarginata</i> and Its Sponge Prey

Abstract

Two new scalaranes (1 and 2) have been isolated from the dorid nudibranch Glossodoris atromarginataand its prey. The structures were deteremined by spectral techniques and confirmed by chemical methods. Compounds 1 and 3 showed selective cytotoxic activity against human thyroid carcinoma.