Design, Synthesis, and Biological Evaluation of 3-(Imidazo[1,2- a]pyrazin-3-ylethynyl)-4-isopropyl- N-(3-((4-methylpiperazin-1-yl)methyl)-5-(trifluoromethyl)phenyl)benzamide as a Dual Inhibitor of Discoidin Domain Receptors 1 and 2

J Med Chem. 2018 Sep 13;61(17):7977-7990. doi: 10.1021/acs.jmedchem.8b01045. Epub 2018 Aug 20.

Abstract

Discoidin-domain receptors 1 and 2 (DDR1 and DDR2) are new potential targets for anti-inflammatory-drug discovery. A series of heterocycloalkynylbenzimides were designed and optimized to coinhibit DDR1 and DDR2. One of the most promising compounds, 5n, tightly bound to DDR1 and DDR2 proteins with Kd values of 7.9 and 8.0 nM; potently inhibited the kinases with IC50 values of 9.4 and 20.4 nM, respectively; and was significantly less potent for a panel of 403 wild-type kinases at 1.0 μM. DDR1- and DDR2-kinase inhibition by 5n was validated by Western-blotting analysis in primary human lung fibroblasts. The compound also dose-dependently inhibited lipopolysaccharide (LPS)-induced interleukin 6 (IL-6) release in vitro and exhibited promising in vivo anti-inflammatory effects in an LPS-induced-acute-lung-injury (ALI) mouse model. Compound 5n may serve as a lead compound for new anti-inflammatory drug discovery.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Lung Injury / chemically induced
  • Acute Lung Injury / drug therapy*
  • Acute Lung Injury / metabolism
  • Animals
  • Anti-Inflammatory Agents / chemical synthesis*
  • Anti-Inflammatory Agents / pharmacology*
  • Discoidin Domain Receptor 1 / antagonists & inhibitors*
  • Discoidin Domain Receptor 2 / antagonists & inhibitors*
  • Drug Design*
  • Humans
  • Lipopolysaccharides / toxicity
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Pneumonia / chemically induced
  • Pneumonia / drug therapy*
  • Pneumonia / metabolism
  • Rats
  • Rats, Sprague-Dawley

Substances

  • Anti-Inflammatory Agents
  • Lipopolysaccharides
  • Discoidin Domain Receptor 1
  • Discoidin Domain Receptor 2