Indole derivatives as potent inhibitors of 5-lipoxygenase: design, synthesis, biological evaluation, and molecular modeling

Bioorg Med Chem Lett. 2007 May 1;17(9):2414-20. doi: 10.1016/j.bmcl.2007.02.038. Epub 2007 Feb 17.

Abstract

A series of novel indole derivatives was designed, synthesized and evaluated by cell-based assays for their inhibitory activities against 5-LOX in rat peritoneal leukocytes. Most of them (30 out of 35) showed an inhibitory potency higher than the initial screening hit 1a (IC(50)=74 microM). Selected compounds for concentration-response studies showed prominent inhibitory activities with IC(50) values ranging from 0.74 microM to 3.17 microM. Four compounds (1m, 1s, 4a, and 6a) exhibited the most potent inhibitory activity compared to that of the reference drug (Zileuton), with IC(50) values less than 1 microM. Molecular modeling studies for compounds 1a, 3a, 4a, and 6a were also presented. The excellent in vitro activities of this class of compounds may possess potential for the treatment of LT-related diseases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Arachidonate 5-Lipoxygenase / chemistry*
  • Chemistry, Pharmaceutical / methods*
  • Drug Design
  • Drug Evaluation, Preclinical
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Indoles / analysis
  • Indoles / isolation & purification*
  • Indoles / metabolism
  • Inhibitory Concentration 50
  • Leukocytes / drug effects*
  • Lipoxygenase Inhibitors*
  • Models, Chemical
  • Models, Molecular
  • Molecular Conformation
  • Protein Binding
  • Pyrans / pharmacology
  • Quinolones / pharmacology
  • Rats

Substances

  • Enzyme Inhibitors
  • Indoles
  • Lipoxygenase Inhibitors
  • Pyrans
  • Quinolones
  • ICI D2138
  • Arachidonate 5-Lipoxygenase