Identification of novel series of pyrazole and indole-urea based DFG-out PYK2 inhibitors

Bioorg Med Chem Lett. 2012 Dec 15;22(24):7523-9. doi: 10.1016/j.bmcl.2012.10.039. Epub 2012 Oct 16.

Abstract

Previous drug discovery efforts identified classical PYK2 kinase inhibitors such as 2 and 3 that possess selectivity for PYK2 over its intra-family isoform FAK. Efforts to identify more kinome-selective chemical matter that stabilize a DFG-out conformation of the enzyme are described herein. Two sub-series of PYK2 inhibitors, an indole carboxamide-urea and a pyrazole-urea have been identified and found to have different binding interactions with the hinge region of PYK2. These leads proved to be more selective than the original classical inhibitors.

MeSH terms

  • Animals
  • Crystallography, X-Ray
  • Dose-Response Relationship, Drug
  • Focal Adhesion Kinase 2 / antagonists & inhibitors*
  • Focal Adhesion Kinase 2 / metabolism
  • HEK293 Cells
  • Humans
  • Indoles / chemical synthesis
  • Indoles / chemistry
  • Indoles / pharmacology*
  • Models, Molecular
  • Molecular Structure
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Pyrazoles / chemical synthesis
  • Pyrazoles / chemistry
  • Pyrazoles / pharmacology*
  • Rats
  • Structure-Activity Relationship
  • Urea / analogs & derivatives
  • Urea / chemistry
  • Urea / pharmacology*

Substances

  • Indoles
  • Protein Kinase Inhibitors
  • Pyrazoles
  • Urea
  • Focal Adhesion Kinase 2