Synthesis of (±)-Bisavenanthramide B-6 by an Anionic Anhydride Mannich Reaction

Michael J. Di Maso, Gabriella M. Nepomuceno, Michael A. St. Peter, Haley H. Gitre, Kevin S. Martin, Jared T. Shaw

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Bisavenanthramide B-6 (2) is a highly substituted γ-lactam derived from oat leaves. Development of a new base-promoted anhydride Mannich reaction with N-sulfonylated imines that forms the core structure of 2 in a single step is presented. Further elaboration allows for a facile one-pot double Buchwald N-arylation to install the final rings onto the densely substituted γ-lactam core. This route provides the natural product in a longest linear sequence of nine steps.

Original languageEnglish (US)
Pages (from-to)1740-1743
Number of pages4
JournalOrganic Letters
Volume18
Issue number8
DOIs
StatePublished - Apr 15 2016

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Biochemistry

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