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The use of stable isotopes has been recently introduced in the biosynthetic studies of metabolites produced by opisthobranch molluscs. This methodology offers numerous advantages since it avoids the complex and tedious manipulations of potentially dangerous radioactive compounds and gives unequivocal evidence for the incorporation. In these studies, high field NMR spectroscopy is a particularly useful...
A new drimane sesquiterpene, hodgsonal (1), has been isolated from the mantle extract of the Antarctic opisthobranch mollusc Bathydoris hodgsoni. The structure of 1, including the absolute stereochemistry, has been elucidated by spectroscopic and chemical methods. The localization of 1 in the mantle and the analogies with related drimane compounds may indicate a defensive role against predators.
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