Chromatographic investigation of an acetone extract of the octocoral Xenia puerto‐galerae afforded three new cadinene sesquiterpenes; 8‐epi‐xenitorin A (1), 10‐epi‐xenitorin C (2), and 7‐isopropenyl‐4,10‐dimethyl‐2,3,4,5‐tetrahydronaphthalene (3), in addition to four known cadinene analogs (4, 11–13) and six xenicanes (5–10). The structures were elucidated through spectroscopic analysis, especially 2D NMR. A biogenetic pathway of 1–3 and analogs was proposed.
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Shen et al. (2007) studied this question.
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