Lipid constituents of marine sponge Suberites carnosus

Abstract

Sterols (22E) - 24- methyl-cholest - 4, 8(9), 22(23) - triene - 3, 7 - diol (1) and (22E)-24-methyl-ergost-6, 22(23)-diene-5, 8-epidioxy-3-ol (2), a fatty acid nonadecanoic acid and a fatty ester methyl nonadecanoate have been isolated from the sponge Suberites carnosus. Minor amounts of (22E)-ergost-6, 22(23), 24(28)-triene-5, 8-epidioxy-3-ol (3) and ergosterol (4) are also present. The structures have been elucidated on the basis of spectral data.