4.8 Article

Total Synthesis of (+)-Mutilin: A Transannular [2+2] Cycloaddition/Fragmentation Approach

Journal

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c06934

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Funding

  1. National Natural Science Foundation of China [31521004, 21672011, 21822101]
  2. Lige-Zhaoning Youth Research Fund for Life Sciences, Ministry of Science and Technology [2017YFA0104000]
  3. College of Chemistry and Molecular Engineering, Peking University
  4. Peking Tsinghua Center for Life Sciences
  5. Beijing National Laboratory for Molecular Sciences

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A new and enantioselective total synthesis of the diterpenoid (+)-mutilin is described, which involves the Claisen rearrangement, transannular [2+2] photocycloaddition, ring-opening reaction, and subsequent late-stage alkylations and reduction to forge the characteristic skeleton.
A new and enantioselective total synthesis of the diterpenoid (+)-mutilin is described. Following a Claisen rearrangement approach to construct the 6,9-bicycle, a transannular [2+2] photocycloaddition and the ensuing ring-opening reaction were implemented to forge the characteristic 5-6-8 propellane-like skeleton. Subsequent late-stage alkylations and reduction completed the synthesis.

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