Palladium-catalyzed dynamic kinetic asymmetric transformations of vinyl aziridines with nitrogen heterocycles: rapid access to biologically active pyrroles and indoles

J Am Chem Soc. 2010 Nov 10;132(44):15800-7. doi: 10.1021/ja1071509.

Abstract

We report that nitrogen heterocycles can serve as competent nucleophiles in the palladium-catalyzed dynamic kinetic asymmetric alkylation of vinyl aziridines. The resulting alkylated products were obtained with high regio-, chemo-, and enantioselectivity. Both substituted 1H-pyrroles and 1H-indoles were successfully employed to give exclusively the branched N-alkylated products. The synthetic utility of this process was demonstrated by applying this method to the preparation of several medicinal chemistry lead compounds and bromopyrrole alkaloids including longamide B, longamide B methyl ester, hanishin, agesamides A and B, and cyclooroidin.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aziridines / chemistry*
  • Catalysis
  • Drug Design
  • Heterocyclic Compounds / chemistry*
  • Indoles / chemistry*
  • Molecular Structure
  • Nitrogen / chemistry*
  • Palladium / chemistry*
  • Pyrroles / chemistry*
  • Vinyl Compounds / chemistry*

Substances

  • Aziridines
  • Heterocyclic Compounds
  • Indoles
  • Pyrroles
  • Vinyl Compounds
  • longamide B
  • Palladium
  • Nitrogen