Design, synthesis and biological evaluation of 4-fluoropyrrolidine-2-carbonitrile and octahydrocyclopenta[b]pyrrole-2-carbonitrile derivatives as dipeptidyl peptidase IV inhibitors

Eur J Med Chem. 2014 Oct 30:86:242-56. doi: 10.1016/j.ejmech.2014.08.059. Epub 2014 Aug 19.

Abstract

Based on the previous work in our group and the principle of computer-aided drug design, a series of novel β-amino pyrrole-2-carbonitrile derivatives was designed and synthesized. Compounds 8l and 9l were efficacious and selective DPP4 inhibitors resulting in decreased blood glucose in vivo. Compound 8l had moderate DPP4 inhibitory activity (IC50 = 0.05 μM) and good oral bioavailability (F = 53.2%). Compound 9l showed excellent DPP4 inhibitory activity (IC50 = 0.01 μM), good selectivity (selective ratio: DPP8/DPP4 = 898.00; DPP9/DPP4 = 566.00) against related peptidases, and good efficacy in an oral glucose tolerance tests in ICR mice and moderate PK profiles (F = 22.8%, t1/2 = 2.74 h). Moreover, compound 9l did not block hERG channel and exhibited no inhibition of liver metabolic enzymes such as CYP2C9.

Keywords: DPP4 inhibitors; GLP-1; Oral bioavailability; Oral glucose tolerance tests; Selectivity; hERG.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Dipeptidyl Peptidase 4 / metabolism*
  • Dipeptidyl-Peptidase IV Inhibitors / chemical synthesis
  • Dipeptidyl-Peptidase IV Inhibitors / chemistry
  • Dipeptidyl-Peptidase IV Inhibitors / pharmacology*
  • Dose-Response Relationship, Drug
  • Drug Design*
  • Humans
  • Mice
  • Mice, Inbred ICR
  • Mice, Obese
  • Molecular Structure
  • Nitriles / chemical synthesis
  • Nitriles / chemistry
  • Nitriles / pharmacology*
  • Structure-Activity Relationship

Substances

  • Dipeptidyl-Peptidase IV Inhibitors
  • Nitriles
  • Dipeptidyl Peptidase 4