Oceanapins A-F, unique branched ceramides isolated from the haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea

Article abstract of DOI:10.1002/hlca.19940770108

A series of ceramides, called oceanapins A-F, which are unique for branching at both the sphingosine and fatty-acid chains, have been isolated as pure compounds from the haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea. Following acid hydrolysis, both the fatty-acid and the sphingosine portions were obtained separately, which allowed their unequivocal structural definition. The absolute configuration was secured via protection of C(l')-OH and Mosher's esterification at C(3')-OH of the oceanapins.