Highly enantioselective construction of spiro[4H-pyran-3,3'-oxindoles] through a domino Knoevenagel/Michael/cyclization sequence catalyzed by cupreine

Org Lett. 2010 Jul 16;12(14):3132-5. doi: 10.1021/ol1009224.

Abstract

The first enantioselective organocatalytic two- and three-component reactions via a domino Knoevenagel/Michael/cyclization sequence with cupreine as catalyst have been developed. A wide range of optically active spiro[4H-pyran-3,3'-oxindoles] were obtained in excellent yields (up to 99%) with good to excellent enantioselectivities (up to 97%) from simple and readily available starting materials under mild reaction conditions. These heterocyclic spirooxindoles will provide promising candidates for chemical biology and drug discovery.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Cyclization
  • Indoles / chemistry*
  • Oxindoles
  • Quinolines / chemistry*
  • Spiro Compounds / chemistry*
  • Stereoisomerism
  • Substrate Specificity

Substances

  • Indoles
  • Oxindoles
  • Quinolines
  • Spiro Compounds
  • 2-oxindole
  • cupreine