Clathriol (1), a highly oxygenated steroid with the unusual 14beta configuration, was isolated from the New Zealand marine sponge Clathria lissosclera. The structure was elucidated from a combination of NMR and mass spectroscopy. Clathriol showed in vitro antiinflammatory activity against human neutrophyl and rat mast cells.
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Keyzers et al. (2002) studied this question.
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