Abstract
A synthesis of the proposed structure of asperidine B is reported, involving a tandem hydroformylation-condensation reaction, a diastereoselective dihydroxylation and the addition of an organozinc reagent to an iminium ion. As the spectroscopic data for the synthetic material is not in agreement with that of the natural product, the structure of asperidine B is reassigned as (+)-preussin.
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