Aminoisoquinolines: design and synthesis of an orally active benzamidine isostere for the inhibition of factor XA

Bioorg Med Chem Lett. 1999 Sep 6;9(17):2539-44. doi: 10.1016/s0960-894x(99)00421-7.

Abstract

The design, synthesis and SAR of sulfonamidopyrrolidinone fXa inhibitors incorporating a new benzamidine isostere, namely aminoisoquinolines, is described. These inhibitors have higher Caco-2 cell permeability than comparable benzamidines and attain higher levels of exposure upon oral dosing. The most potent member 14b (fXa Ki=6 nM) is selective against other serine proteases of interest (>600 fold).

MeSH terms

  • Administration, Oral
  • Animals
  • Binding Sites
  • Dogs
  • Factor Xa Inhibitors*
  • Isoquinolines / administration & dosage
  • Isoquinolines / chemical synthesis*
  • Isoquinolines / pharmacology
  • Serine Proteinase Inhibitors / administration & dosage
  • Serine Proteinase Inhibitors / chemical synthesis*
  • Serine Proteinase Inhibitors / pharmacology
  • Structure-Activity Relationship

Substances

  • Factor Xa Inhibitors
  • Isoquinolines
  • Serine Proteinase Inhibitors