Pseudaxinyssa pitys

A sesquiterpene isothiocyanate (240) was isolated from the Californian nudibranch Cadlina luteomarginata but was presumed to be concentrated from the Axinella species of sponge which constitutes much of its diet [249]. Famesyl isothiocyanate (241) was isolated from Pseudaxinyssa pitys [250], while theonellin isothiocyanate (242) was isolated from the sponge Theonella cf. swinhoei [251]. 

Two acyclic diterpene tetraene isothiocyanates have been isolated from sponges so far. Famesyl isothiocyanate (220) was obtained from Pseudaxinyssa pitys [184] while compound (+)-221 was isolated from Halichondria sp. [185]. Their structures were elucidated by interpretation of their spectral data. 

Interest in the metabolites of marine organisms remains undiminished (see, e.g. Vol. 8, pp. 65,66,75,79,82,101,108). A detailed investigation of the terpenoid constituents of the Indo-Pacific sponge Pseudaxinyssa pitys) has resulted in the isolation of several novel carbonimidic dichlorides (38)—(42). It has been... 

Wratten, S.J. and Faulkner, D.J., 1977. Carbonimidic dichlorides from the marine sponge Pseudaxinyssa pitys. J. Am. Chem. Soc., 99 7367—7368. 

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