1,3-Disubstituted and 1,3,3-trisubstituted adamantyl-ureas with isoxazole as soluble epoxide hydrolase inhibitors

Bioorg Med Chem Lett. 2015 Dec 1;25(23):5514-9. doi: 10.1016/j.bmcl.2015.10.066. Epub 2015 Oct 23.

Abstract

Adamantyl ureas are good soluble epoxide hydrolase (sEH) inhibitors; however they have limited solubility and rapid metabolism, thus limiting their usefulness in some therapeutic indications. Herein, we test the hypothesis that nodal substitution on the adamantane will help solubilize and stabilize the compounds. A series of compounds containing adamantane derivatives and isoxazole functional groups were developed. Overall, the presence of methyl on the nodal positions of adamantane yields higher water solubility than previously reported urea-based sEH inhibitors while maintaining high inhibition potency. However, it did not improve microsomal stability.

Keywords: Adamantane; Inhibitor; Isocyanate; Isoxazole; Soluble epoxide hydrolase; Urea.

MeSH terms

  • Adamantane / chemistry*
  • Adamantane / pharmacology
  • Drug Stability
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology
  • Epoxide Hydrolases / antagonists & inhibitors*
  • Humans
  • Inhibitory Concentration 50
  • Isoxazoles / chemistry*
  • Isoxazoles / pharmacology
  • Microsomes / chemistry
  • Microsomes / drug effects
  • Solubility
  • Structure-Activity Relationship
  • Urea / chemistry*
  • Urea / pharmacology*

Substances

  • Enzyme Inhibitors
  • Isoxazoles
  • Urea
  • Epoxide Hydrolases
  • Adamantane