Design, synthesis, and crystal structure of selective 2-pyridone tissue factor VIIa inhibitors

J Med Chem. 2003 Oct 23;46(22):4696-701. doi: 10.1021/jm0301686.

Abstract

Targeted 2-pyridones were selected as tissue Factor VIIa inhibitors and prepared from 2,6-dibromopyridine via a multistep synthesis. A variety of chemical transformations, including regioselective nucleophilic addition, selective nitrogen alkylation, and a Suzuki coupling, afforded the targeted tissue Factor VIIa inhibitors. The pyridone core was selected as a replacement for the pyrazinone core of noncovalent tissue Factor VIIa inhibitors and designed such that their substitution pattern would occupy and interact with the S(1), S(2), and S(3) pockets of the tissue Factor VIIa enzyme. These compounds were tested in several serine protease enzyme assays involved in the coagulation cascade exhibiting modest activity on tissue Factor VIIa with excellent selectivity over thrombin and Factor Xa. Finally, an X-ray crystal structure of inhibitor 14a bound to tissue Factor VIIa was obtained and will be described.

Publication types

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

MeSH terms

  • Acetamides / chemical synthesis*
  • Acetamides / chemistry
  • Benzoates / chemical synthesis*
  • Benzoates / chemistry
  • Crystallography, X-Ray
  • Drug Design
  • Factor VIIa / antagonists & inhibitors*
  • Humans
  • Models, Molecular
  • Protease Inhibitors / chemical synthesis*
  • Protease Inhibitors / chemistry
  • Pyridones / chemical synthesis*
  • Pyridones / chemistry
  • Structure-Activity Relationship

Substances

  • 3-amino-5-(1-(2-((4-(amino(imino)methyl)benzyl)amino)-2-oxoethyl)-5-(isopropylamino)-6-oxo-1,6-dihydropyridin-2-yl)benzoic acid
  • Acetamides
  • Benzoates
  • N-(4-(amino(imino)methyl)benzyl)-2-(6-(3,5-diaminophenyl)-3-(isopropylamino)-2-oxopyridin-1(2H)-yl)acetamide
  • Protease Inhibitors
  • Pyridones
  • 2-hydroxypyridine
  • Factor VIIa