Acenaphtho[1,2-b]pyrrole-based selective fibroblast growth factor receptors 1 (FGFR1) inhibitors: design, synthesis, and biological activity

J Med Chem. 2011 Jun 9;54(11):3732-45. doi: 10.1021/jm200258t. Epub 2011 May 13.

Abstract

A novel series of acenaphtho[1,2-b]pyrrole derivatives as potent and selective inhibitors of fibroblast growth factor receptor 1 (FGFR1) were designed and synthesized. In silico target prediction revealed that tyrosine kinases might be the potential targets of the representative compound 2, which was subsequently validated by enzyme-linked immunosorbent assay (ELISA) for its selective and active FGFR1 inhibition of various tyrosine kinases. The structure-activity relationship (SAR) analysis aided by molecular docking simulation in the ATP-binding site demonstrated that acenaphtho[1,2-b]pyrrole carboxylic acid esters (2-5) are potent inhibitors of FGFR1 with IC(50) values ranging from 19 to 77 nM. Furthermore, these compounds exhibited favorable growth inhibition property against FGFR-expressing cancer cell lines with IC(50) values ranging from micromolar to submicromolar. Western blotting analysis showed that compounds 2, 3, and 2b inhibited activation of FGFR1 and extracellular-signal regulated kinase 1/2 (Erk1/2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acenaphthenes / chemical synthesis*
  • Acenaphthenes / chemistry
  • Acenaphthenes / pharmacology*
  • Acenaphthenes / toxicity
  • Animals
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Drug Design
  • Extracellular Signal-Regulated MAP Kinases / antagonists & inhibitors*
  • Extracellular Signal-Regulated MAP Kinases / metabolism
  • Goats
  • HeLa Cells
  • Humans
  • Inhibitory Concentration 50
  • Mice
  • Molecular Targeted Therapy
  • Protein Kinase Inhibitors / chemical synthesis*
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Protein Kinase Inhibitors / toxicity
  • Pyrroles / chemical synthesis*
  • Pyrroles / chemistry
  • Pyrroles / pharmacology*
  • Pyrroles / toxicity
  • Receptor, Fibroblast Growth Factor, Type 1 / antagonists & inhibitors*
  • Receptor, Fibroblast Growth Factor, Type 1 / metabolism
  • Structure-Activity Relationship

Substances

  • Acenaphthenes
  • Protein Kinase Inhibitors
  • Pyrroles
  • ethyl 8-oxo-8H-acenaphtho(1,2-b)pyrrole-9-carboxylate
  • Receptor, Fibroblast Growth Factor, Type 1
  • Extracellular Signal-Regulated MAP Kinases