A highly efficient asymmetric synthesis of vernakalant

Org Lett. 2014 May 16;16(10):2716-9. doi: 10.1021/ol501002a. Epub 2014 May 1.

Abstract

A novel synthesis of vernakalant is described. Using inexpensive and readily available reagents, the key transformations involve (1) an efficient zinc-amine-promoted etherification, (2) a highly stereoselective enzyme-catalyzed dynamic asymmetric transamination to set up the two contiguous chiral centers in the cyclohexane ring, and (3) a pyrrolidine ring formation via alkyl-B(OH)2-catalyzed amidation and subsequent imide reduction.

MeSH terms

  • Amination
  • Amines / chemistry
  • Anisoles / chemical synthesis*
  • Anisoles / chemistry
  • Catalysis
  • Chlorides / chemistry
  • Cyclohexanes
  • Molecular Structure
  • Pyrrolidines / chemical synthesis*
  • Pyrrolidines / chemistry
  • Stereoisomerism
  • Zinc Compounds / chemistry

Substances

  • Amines
  • Anisoles
  • Chlorides
  • Cyclohexanes
  • Pyrrolidines
  • Zinc Compounds
  • Cyclohexane
  • zinc chloride
  • vernakalant