Modular synthesis of the C9-C27 degradation product of aflastatin A via alkyne-epoxide cross-couplings |
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Authors: | Robles Omar McDonald Frank E |
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Institution: | Department of Chemistry, Emory University, Atlanta, GA 30322, USA. |
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Abstract: | A modular approach to the synthesis of complex polyketide natural products is demonstrated for the synthesis of the C9-C27 degradation product from aflastatin A. The product of the cross-coupling of C23-C27 terminal alkyne with C17-C22 epoxide underwent functionalization of the resulting internal alkyne, which was then coupled similarly with C9-C16 epoxide. This synthesis concluded with regio- and stereoselective addition of methyl onto the internal alkyne followed by stereoselective hydroboration-oxidation. |
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