A novel series of 4-methyl substituted pyrazole derivatives as potent glucagon receptor antagonists: Design, synthesis and evaluation of biological activities

Bioorg Med Chem. 2018 May 1;26(8):1896-1908. doi: 10.1016/j.bmc.2018.02.036. Epub 2018 Feb 22.

Abstract

A novel series of 4-methyl substituted pyrazole derivatives were designed, synthesized and biologically evaluated as potent glucagon receptor (GCGR) antagonists. In this study, compounds 9q, 9r, 19d and 19e showed high GCGR binding (IC50 = 0.09 μM, 0.06 μM, 0.07 μM and 0.08 μM, respectively) and cyclic-adenosine monophosphate (cAMP) activities (IC50 = 0.22 μM, 0.26 μM, 0.44 μM and 0.46 μM, respectively) in cell-based assays. Most importantly, the docking experiment demonstrated that compound 9r formed extensive hydrophobic interactions with the receptor binding pocket, making it justifiable to further investigate the potential of becoming a GCGR antagonist.

Keywords: Binding pocket; Docking study; Glucagon receptor antagonist; Pyrazole derivatives.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Allosteric Regulation
  • Binding Sites
  • Cyclic AMP / metabolism
  • Drug Design*
  • HEK293 Cells
  • Humans
  • Hypoglycemic Agents / chemical synthesis*
  • Hypoglycemic Agents / metabolism
  • Molecular Docking Simulation
  • Protein Binding
  • Protein Structure, Tertiary
  • Pyrazoles / chemistry*
  • Pyrazoles / metabolism
  • Receptors, Glucagon / antagonists & inhibitors*
  • Receptors, Glucagon / genetics
  • Receptors, Glucagon / metabolism
  • Structure-Activity Relationship

Substances

  • Hypoglycemic Agents
  • Pyrazoles
  • Receptors, Glucagon
  • Cyclic AMP