Four new polyacetylenes (3-6) with cytotoxic activities against human
tumor cell lines (A549, SK-OV-3, SK-MEL-2, XF498, and HCT15) have been
isolated from the marine sponge Petrosia sp. They were given the triv
ial names of dideoxypetrosynols A-D. (C) 1998 Elsevier Science Ltd. Al
l rights reserved.