Discovery of N-substituted-3-phenyl-1,6-naphthyridinone derivatives bearing quinoline moiety as selective type II c-Met kinase inhibitors against VEGFR-2

Bioorg Med Chem. 2020 Jun 15;28(12):115555. doi: 10.1016/j.bmc.2020.115555. Epub 2020 May 12.

Abstract

New N-substituted-3-phenyl-1,6-naphthyridinone derivatives are designed and synthesized, based on structural modification of our previously reported compound 3. Extensive enzyme-based SAR studies and PK evaluation led to the discovery of compound 4r, with comparable c-Met potency to that of Cabozantinib and high VEGFR-2 selectivity, while Cabozantinib displayed no VEGFR-2 selectivity. More importantly, at oral doses of 45 mg/kg (Q.D.), compound 4r exhibits significant tumor growth inhibition (93%) in a U-87MG human gliobastoma xenograft model. The promising selectivity against VEGFR-2 and excellent tumor growth inhibition of compound 4r suggest that it could be used as a new lead molecule for further discovery of selective type II c-Met inhibitors.

Keywords: 1,6-Naphthyridone; Antitumor efficacy; VEGFR-2 selectivity; c-Met kinase inhibitor.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Binding Sites
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Drug Design*
  • Humans
  • Mice
  • Molecular Docking Simulation
  • Naphthyridines / chemistry*
  • Naphthyridines / metabolism
  • Naphthyridines / pharmacology
  • Naphthyridines / therapeutic use
  • Neoplasms / drug therapy
  • Neoplasms / pathology
  • Protein Kinase Inhibitors / chemistry*
  • Protein Kinase Inhibitors / metabolism
  • Protein Kinase Inhibitors / pharmacology
  • Protein Kinase Inhibitors / therapeutic use
  • Proto-Oncogene Proteins c-met / antagonists & inhibitors*
  • Proto-Oncogene Proteins c-met / metabolism
  • Quinolines / chemistry*
  • Structure-Activity Relationship
  • Transplantation, Heterologous
  • Vascular Endothelial Growth Factor Receptor-2 / antagonists & inhibitors*
  • Vascular Endothelial Growth Factor Receptor-2 / metabolism

Substances

  • Naphthyridines
  • Protein Kinase Inhibitors
  • Quinolines
  • Proto-Oncogene Proteins c-met
  • Vascular Endothelial Growth Factor Receptor-2