4.8 Article

Enantioselective Formal Total Synthesis of (+)-Aspergillide C

Journal

ORGANIC LETTERS
Volume 11, Issue 21, Pages 5086-5088

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol902154p

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Funding

  1. University of Vermont
  2. Vermont Genetics Network [P20 RR16462]
  3. National Center for Research Resources (NCRR)
  4. National Institutes of Health (NIH)
  5. Direct For Mathematical & Physical Scien
  6. Division Of Chemistry [0821501] Funding Source: National Science Foundation

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An enantioselective formal total synthesis of the cytotoxic macrolide (+)-aspergillide C has been accomplished from (S)-(-)-glyceraldehyde acetonide and the Danishefsky-Kitehara diene. Strategic transformations include a hetero Diels-Alder reaction, Ferrier-type addition, and palladium-catalyzed oxidative lactonization to set key stereocenters within the dihydropyran core, followed by fragment coupling via (E)selective Julia-Kocienski olefination.

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