Design, synthesis and biological evaluation of novel 4-phenoxyquinoline derivatives containing 3-oxo-3,4-dihydroquinoxaline moiety as c-Met kinase inhibitors

Bioorg Med Chem. 2017 Aug 15;25(16):4475-4486. doi: 10.1016/j.bmc.2017.06.037. Epub 2017 Jun 27.

Abstract

A series of novel 4-phenoxyquinoline derivatives containing 3-oxo-3,4-dihydroquinoxaline moiety were synthesized and evaluated for their c-Met kinase inhibitory activity and antiproliferative activity against five cancer cell lines (HT-29, H460, A549, MKN-45 and U87MG) in vitro. Most of the compounds exhibited moderate-to-significant cytotoxicity as compared with foretinib. The most promising compound 41 (with c-Met IC50 value of 0.90nM) showed remarkable cytotoxicity against HT-29, H460, A549, MKN-45 and U87MG cell lines with IC50 values of 0.06μM, 0.05μM, 0.18μM, 0.023μM and 0.66μM, respectively, and thus it was 1.22- to 3.50-fold more potent than foretinib. Their preliminary structure-activity relationships (SARs) studies indicate that electron-withdrawing groups on the terminal phenyl rings are beneficial for improving the antitumor activity.

Keywords: 4-Phenoxyquinoline derivatives; Antitumor activity; Synthesis; c-Met inhibitors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Dose-Response Relationship, Drug
  • Drug Design*
  • Drug Screening Assays, Antitumor
  • Humans
  • Models, Molecular
  • Molecular Structure
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Proto-Oncogene Proteins c-met / antagonists & inhibitors*
  • Proto-Oncogene Proteins c-met / metabolism
  • Quinolines / chemical synthesis
  • Quinolines / chemistry
  • Quinolines / pharmacology*
  • Quinoxalines / chemistry
  • Quinoxalines / pharmacology*
  • Structure-Activity Relationship

Substances

  • 3-oxo-3,4-dihydroquinoxaline
  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • Quinolines
  • Quinoxalines
  • Proto-Oncogene Proteins c-met