Total synthesis of (±)-bruguierol A via an intramolecular [3+2] cycloaddition of cyclopropane 1, 1-diester
Total synthesis of natural product (±)-bruguierol A was accomplished in 10-steps and with an overall 16.8% yield. The embedded unique 8-oxabicyclo[3.2.1]octane core skeleton in this natural product was constructed via a novel Sc(OTf)3-catalyzed intramolecular [3+2] cycloaddition of cyclopropane which was developed recently in this laboratory. This general synthetic strategy can be potentially applied to the synthesis of a broad range of structurally related natural products. © 2010 Elsevier Ltd. All rights reserved.
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