4.8 Article

Total Synthesis and Stereochemical Reassignment of Mandelalide A

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 25, Pages 6533-6537

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201403542

Keywords

configuration determination; diastereoselectivity; marine macrolides; structure elucidation; total synthesis

Funding

  1. Hong Kong Research Grants Council [PolyU 5040/10P, PolyU 5037/11P, PolyU 5020/12P, PolyU5030/13P, PolyU153035/14P]
  2. Fong Shu Fook Tong Foundation
  3. Joyce M. Kuok Foundation
  4. National Natural Science Foundation of China [21072007, 21272011, 21133002]
  5. Shenzhen Science and Technology Development Fund [JCYJ20130329175740481, ZYC201105170351A]

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The total synthesis of the tunicate metabolite mandelalide A and the correction of its originally assigned stereochemistry are reported. Key features of the convergent, fully stereocontrolled route include the use of a Prins cyclization for the diastereoselective construction of the tetrahydropyran subunit, Rychnovsky-Bartlett cyclization for the preparation of the tetrahydrofuran moiety, Suzuki coupling, Horner-Wadsworth-Emmons macrocyclization, and glycosylation to append the l-rhamnose-derived pyranoside.

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