Synthesis and selective monoamine oxidase B-inhibiting properties of 1-methyl-1,2,3,6-tetrahydropyrid-4-yl carbamate derivatives: potential prodrugs of (R)- and (S)-nordeprenyl

J Med Chem. 1996 Nov 22;39(24):4756-61. doi: 10.1021/jm960477e.

Abstract

The results of previous studies have established that the monoamine oxidase-catalyzed oxidation of 1-methyl-1,2,3,6-tetrahydropyridyl derivatives bearing heteroatom substituents at C-4 generates 2,3-dihydropyridinium intermediates that undergo spontaneous hydrolysis to release the C-4 substituent and form the amino enone 1-methyl-2,3-dihydro-4-pyridone. We have attempted to adapt this metabolic pathway to the preparation of amine-containing prodrugs that may target the central nervous system which is rich in monoamine oxidase A and B. In this paper we report the synthesis and the in vitro and in vivo metabolic fate of the tetrahydropyridyl carbamate derivatives which are designed to release (S)- and (R)-nordeprenyl. These carbamates are selective monoamine oxidase A substrates. An ex vivo assay has shown that the R-enantiomer is an effective and selective inhibitor of brain mitochondrial monoamine oxidase B.

Publication types

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

MeSH terms

  • Animals
  • Brain / drug effects
  • Brain / enzymology
  • Carbamates / chemical synthesis*
  • Carbamates / pharmacology
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / pharmacology
  • Humans
  • Kinetics
  • Magnetic Resonance Spectroscopy
  • Male
  • Mice
  • Mice, Inbred Strains
  • Mitochondria / enzymology
  • Molecular Conformation
  • Monoamine Oxidase / metabolism
  • Monoamine Oxidase Inhibitors / chemical synthesis*
  • Monoamine Oxidase Inhibitors / pharmacology
  • Placenta / enzymology
  • Prodrugs / metabolism
  • Pyridines / chemical synthesis*
  • Pyridines / pharmacology
  • Substrate Specificity

Substances

  • Carbamates
  • Enzyme Inhibitors
  • Monoamine Oxidase Inhibitors
  • Prodrugs
  • Pyridines
  • Monoamine Oxidase