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Keywords:

  • antitumor agents;
  • dihydroxylation;
  • quinones;
  • spiro compounds;
  • total synthesis

Graphical Abstract

Thumbnail image of graphical abstract

A strategy for the synthesis of heliquinomycin, a selective helicase inhibitor, hinges on the spirocyclization of precursor 3. Naphthofuran 1 and aldehyde 2 were readily prepared and used in the synthesis of 3. The key steps in the total synthesis of heliquinomycinone (4) include the regioselective dihydroxylation of 3, and a novel spirocyclization under Mitsunobu conditions.