Discovery of novel 2,4-diarylaminopyrimidine derivatives as potent and selective epidermal growth factor receptor (EGFR) inhibitors against L858R/T790M resistance mutation

Eur J Med Chem. 2018 May 25:152:298-306. doi: 10.1016/j.ejmech.2018.04.052. Epub 2018 Apr 27.

Abstract

A series of novel 2,4-diarylaminopyrimidine derivatives of AZD9291 were discovered as L858R/T790M mutant selective epidermal growth factor receptor (EGFR) inhibitors. The majority of these compounds exhibited moderate to excellent EGFR T790 M/L858R inhibitory activities and comparable anti-proliferative activities against double mutant over-expressed NCI-H1975 cells to that of AZD9291. The most promising compounds 8a displayed an IC50 of 4.1 nM against EGFR L858R/T790M mutants. 8a also showed excellent cytotoxic effect against NCI-H1975 cells with an IC50 of 59 nM and 100-fold selectivity over wide-type EGFR over-expressed A431 cells. Compound 8a significantly inhibited tumor growth in NCI-H1975 xenograft models at a non-toxic dose. Docking study performed for 8a with ATP binding site of EGFR-TK showed the similar binding mode to that of AZD9291. All these results suggested that compound 8a was a potential mutant-selective EGFR inhibitor.

Keywords: AZD9291; EGFR inhibitors; Mutant selective inhibitors; Pyrimidine derivatives; T790M.

MeSH terms

  • Animals
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • ErbB Receptors / antagonists & inhibitors*
  • ErbB Receptors / genetics
  • ErbB Receptors / metabolism
  • Female
  • Humans
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • Models, Molecular
  • Molecular Structure
  • Mutation
  • Neoplasms, Experimental / drug therapy
  • Neoplasms, Experimental / genetics
  • Neoplasms, Experimental / metabolism
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Pyrimidines / chemical synthesis
  • Pyrimidines / chemistry
  • Pyrimidines / pharmacology*
  • Structure-Activity Relationship

Substances

  • Protein Kinase Inhibitors
  • Pyrimidines
  • 2-aminopyrimidine
  • EGFR protein, human
  • ErbB Receptors