Sulphated polyprenylhydroquinones from the sponge Ircinia spinosula

Three sodium polyprenylhydroquinone sulfates with related previously described polyprenylhydroquinones have been isolated from the sponge lrcinia spinosula, collected in the Adriatic Sea. The structures were proposed by means of spectroscopic data and by chemical correlation. Brine shrimp and fish lethalities of isolated compounds are reported.