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We describe herein an enantioselective total synthesis of (−)‐exiguolide, the natural enantiomer. The methylene bis(tetrahydropyran) substructure was efficiently synthesized by exploiting olefin cross‐metathesis for the assembly of readily available acyclic segments and intramolecular oxa‐conjugate cyclization and reductive etherification for the formation of the tetrahydropyran rings. The 20‐membered...
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