A Study of the Terpenoids of the Sponge Euryspongia Sp

Abstract

The metabolites of the sponge Euryspongia sp. ( Dysideidae ) were investigated. The sponge was shown to contain the previously unknown sesquiterpene epoxides (15) and (16), and three known compounds, dehydrodendrolasin (1), thiofurodysinin acetate (13) and thiofurodysin acetate (14). Based on the spectral data of (1) and the synthetic compounds (1′E)- and (1′Z)-3-(4′,8′-dimethylnon-1-enyl)furan (5) and (6), the structures of 'the cis isomer of dehydrodendrolasin' (2), tetradehydrofurospongian-1 (3) and the related C21 furanoterpene (4) should be reevaluated.