Haliclonyne (1), a new polyacetylene carboxylic acid, has been isolated from the marine sponge Haliclona sp. collected in the Gulf of Eilat. The structure of haliclonyne, a C(47) oxo-octahydroxy-dienetetrayne carboxylic acid, was elucidated by interpretation of NMR and mass spectra of 1 and two of its derivatives.
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Chill et al. (2000) studied this question.
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