Chemoenzymatic synthesis of rivastigmine based on lipase-catalyzed processes

J Org Chem. 2009 Aug 7;74(15):5304-10. doi: 10.1021/jo900784g.

Abstract

A straightforward chemoenzymatic synthesis of enantiomerically pure rivastigmine has been efficiently carried out under mild reaction conditions, with Candida antarctica lipase B responsible for the stereoselective acetylation of the corresponding (R)-alcohol or amine. An exhaustive enzymatic study has been developed exploring the possibilities of carry out enzyme recycling, scaling up the enzymatic process and development of a dynamic kinetic resolution procedure for the production of adequate enantiomerically pure precursors of rivastigmine. Total chemoenzymatic synthesis of this pharmaceutical has been performed in good overall yield from commercially available 3-methoxyacetophenone.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Candida / enzymology*
  • Catalysis
  • Lipase / chemistry
  • Lipase / metabolism*
  • Molecular Structure
  • Phenylcarbamates / chemical synthesis*
  • Phenylcarbamates / chemistry
  • Rivastigmine
  • Stereoisomerism

Substances

  • Phenylcarbamates
  • Lipase
  • Rivastigmine