Abstract

The nudibranch Sclerodoris tanya, which was collected intertidally at La Jolla, contains two sesquiterpene glyceride esters, tanyolides A ( 4) and B ( 5). The structures of the tanyolides were elucidated by interpretation of spectral data. The absolute configuration of tanyolide B ( 5) was determined by synthesis of both enantiomers and the structure of tanyolide A ( 4) was also confirmed by synthesis. The tanyolides, which are located primarily in the dorsal mantle, deter feeding by two ecologically-relevant predatory fish.

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