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One known drimane sesquiterpene ( 1 ) and five new ones ( 2 − 6 ) have been isolated from the sponge Dysidea fusca . Their structures were elucidated mainly by 2D NMR. The relative stereochemistry at C-11 of 1 has been corrected to H-11β.
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Montagnac et al. (1996) studied this question.
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