4.2 Article

HIGHLY CONVERGENT STRAIGHTFORWARD STEREOSELECTIVE SYNTHESIS OF (+)-C(9a)-EPIEPIQUINAMIDE

Journal

HETEROCYCLES
Volume 97, Issue 2, Pages 1191-1202

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.3987/COM-18-S(T)66

Keywords

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Funding

  1. Ministerio de Ciencia e Innovacion (MCINN) [CONSOLIDER INGENIO 2010-CDS2007-00006, CTQ2011-24165]
  2. Ministerio de Economia Competitividad (MINECO) [CTQ2014-53695-P, CTQ2014-51912-REDC CTQ2016-81797-REDC, CTQ2017-85093-P]
  3. FEDER
  4. Generalitat Valencian [PROMETEOII/2014/017]
  5. University of Alicante
  6. Ministere de l'Enseignement Superieur et de la Recherche Scientifique Algerienne
  7. Direction de la Cooperation et des Echanges Interuniversitaires Programme de Formation Residentielle a l'Etranger au titre de l'annee universitaire 2016/2017 Programme National Exceptionnel (PNE)

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The total synthesis of (+)-C(9a)-epiepiquinamide has been achieved starting from ethyl 5-bromopentanoate, (Rs)-tert-butanesulfinamide, nitromethane, ethyl acrylate and acetic anhydride. The diastereoselective coupling of ethyl 4-nitrobutanoate and a chiral N-tert-butanesulfinyl imine, along with a double cyclization involving a primary amine through an intramolecular N-alkylation and lactam formation, are key steps of this synthesis.

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