A New Brominated Diphenyl Ether from the Marine Sponge Dysidea herbacea.

Abstract

Samples of Dysidea herbacea collected at Pelorus Island, Great Barrier Reef, Australia, afforded a new polybrominated diphenyl ether (1). The structure was determined by n.m.r. two-dimensional methods and by an X-ray diffraction study. N.m.r. spectral assignments for (1) and some previously reported isomeric polybrominated diphenyl ethers are discussed.