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Article Abstract
A chemoselective oxidative cleavage of synthetic gracilioether B, 11-epi-gracilioether C benzoate, and des-hydroxygracilioether C with pyridinium chlorochromate, which proceeds with loss of the furanyl acetate, has enabled total synthesis and stereochemical elucidation of the marine sponge metabolites (4R,6R)-plakilactone C, (4R,6R,9R)-plakilactone B, and (4R,6R)-des-hydroxyplakilactone B. des-Hydroxygracilioether C, the putative biosynthetic precursor to hippolachnin A, was also found to undergo a facile ene cyclization on treatment with SnCl4.
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| http://dx.doi.org/10.1021/acs.joc.6b01196 | DOI Listing |
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