Biochemical Studies on the Carotenoids in Porifera. The Structure of Clathriaxanthin in Sea Sponge, Clathria frondifera (Bowerbank)

Abstract

A new aromatic keto-carotenoid was isolated from orange sea sponge, Clathria frondifera (Bowerbank), which was shown to be a 3-hydroxy-4-keto-2, 3-didehydro-β, χ-carotene. The name clathriacine is proposed for the aromatic keto-carotenoid and clathriaxanthin for the esterified carotenoid. © 1976, The Japanese Society of Fisheries Science. All rights reserved.