Discovery of novel benzoxazinones as potent and orally active long chain fatty acid elongase 6 inhibitors

J Med Chem. 2009 Nov 26;52(22):7289-300. doi: 10.1021/jm900915x.

Abstract

A series of benzoxazinones was synthesized and evaluated as novel long chain fatty acid elongase 6 (ELOVL6) inhibitors. Exploration of the SAR of the UHTS lead 1a led to the identification of (S)-1y that possesses a unique chiral quarternary center and a pyrazole ring as critical pharmacophore elements. Compound (S)-1y showed potent and selective inhibitory activity toward human ELOVL6 while displaying potent inhibitory activity toward both mouse ELOVL3 and 6 enzymes. Compound (S)-1y showed acceptable pharmacokinetic profiles after oral dosing in mice. Furthermore, (S)-1y significantly suppressed the elongation of target fatty acids in mouse liver at 30 mg/kg oral dosing.

MeSH terms

  • Acetyltransferases / antagonists & inhibitors*
  • Acetyltransferases / metabolism
  • Administration, Oral
  • Animals
  • Benzoxazines / administration & dosage*
  • Benzoxazines / chemical synthesis
  • Benzoxazines / chemistry
  • Benzoxazines / pharmacology*
  • Cell Line, Tumor
  • Drug Discovery*
  • Enzyme Inhibitors / administration & dosage*
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Fatty Acid Elongases
  • Fatty Acids / blood
  • Fatty Acids / metabolism
  • Humans
  • Liver / drug effects
  • Liver / metabolism
  • Male
  • Mice
  • Structure-Activity Relationship

Substances

  • Benzoxazines
  • ELOVL3 protein, human
  • ELOVL6 protein, human
  • Elovl3 protein, mouse
  • Elovl6 protein, mouse
  • Enzyme Inhibitors
  • Fatty Acids
  • Acetyltransferases
  • Fatty Acid Elongases