CYTOTOXIC ALCYONOLIDE CONGENERS FROM AN OKINAWAN SOFT CORAL CESPITULARIA SP.

Four new alcyonolide congeners (1-4) were isolated from a soft coral Cespitularia sp. together with the known alcyonolide (5). Their structures were determined by spectroscopic and chemical analyses. Compounds 1-5 showed moderate to weak cytotoxicities against HCT 116 cells.