The Rhodium Carbenoid Route to Cyclic Ethers. Synthesis of thecis-2,7-Disubstituted Oxepane Skeleton of Isolaurepinnacin

Abstract
The cis-2,7-disubstituted oxepane skeleton 1 of the marine natural product isolaurepinnacin is obtained by two routes, both of which involve a rhodium (II) acetate mediated cyclisation of a diazoalcohol to give a functionalised oxepane, suitable for further elaboration.

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