Design, synthesis and structure-activity relationship of diaryl-ureas with novel isoxazol[3,4-b]pyridine-3-amino-structure as multi-target inhibitors against receptor tyrosine kinase

Bioorg Med Chem. 2018 Sep 1;26(16):4735-4744. doi: 10.1016/j.bmc.2018.08.013. Epub 2018 Aug 11.

Abstract

Inspired by that the multi-target inhibitors against receptor tyrosine kinases (RTKs) have significantly improved the effect of clinical treatment for cancer, and based on the chemical structure of Linifanib (ABT-869, Abbott), two series of diaryl-ureas with novel isoxazol[3,4-b]pyridine-3-amino-structure were designed and synthesized as multi-target inhibitors against RTKs. The preliminary biological evaluation showed that several compounds exhibited comparable potency with Linifanib. Compound S21 was identified as the most potent inhibitor against Fms-like tyrosine kinase 3 (FLT-3), kinase insert domain containing receptor (KDR) and platelet-derived growth factor receptor β (PDGFR-β) with its IC50 values were 4 nM, 3 nM and 8 nM respectively, it also showed potent inhibitory activities against several cancer cells.

Keywords: Antiangiogenesis; FLT3; KDR; Multi-target inhibitors; PDGFR-β; Receptor tyrosine kinase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Binding Sites
  • Cell Line
  • Cell Proliferation / drug effects
  • Drug Design*
  • Humans
  • Molecular Docking Simulation
  • Protein Kinase Inhibitors / chemical synthesis*
  • Protein Kinase Inhibitors / pharmacology
  • Protein Structure, Tertiary
  • Pyridines / chemistry*
  • Receptor Protein-Tyrosine Kinases / antagonists & inhibitors
  • Receptor Protein-Tyrosine Kinases / metabolism*
  • Receptor, Platelet-Derived Growth Factor beta / antagonists & inhibitors
  • Structure-Activity Relationship
  • Urea / chemistry*
  • Urea / pharmacology
  • Vascular Endothelial Growth Factor Receptor-2 / antagonists & inhibitors
  • Vascular Endothelial Growth Factor Receptor-2 / metabolism
  • fms-Like Tyrosine Kinase 3 / antagonists & inhibitors
  • fms-Like Tyrosine Kinase 3 / metabolism

Substances

  • Protein Kinase Inhibitors
  • Pyridines
  • Urea
  • Receptor Protein-Tyrosine Kinases
  • Receptor, Platelet-Derived Growth Factor beta
  • Vascular Endothelial Growth Factor Receptor-2
  • fms-Like Tyrosine Kinase 3