Discovery of acylurea isosteres of 2-acylaminothiadiazole in the azaxanthene series of glucocorticoid receptor agonists

Bioorg Med Chem Lett. 2014 Aug 1;24(15):3268-73. doi: 10.1016/j.bmcl.2014.06.010. Epub 2014 Jun 13.

Abstract

Acylureas and acyclic imides are found to be excellent isosteres for 2-acylamino-1,3,4-thiadiazole in the azaxanthene-based series of glucocorticoid receptor (GR) agonists. The results reported herein show that primary acylureas maintain high affinity and selectivity for GR while providing improved CYP450 inhibition and pharmacokinetic profile over 2-acylamino-1,3,4-thiadiazoles. General methods for synthesis of a variety of acylureas and acyclic imides from a carboxylic acid were utilized and are described.

Keywords: Acylurea; Glucocorticoid receptor; Imide; Isostere; Non-steroidal glucocorticoid receptor agonists.

MeSH terms

  • Crystallography, X-Ray
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • Heterocyclic Compounds, 3-Ring / chemical synthesis
  • Heterocyclic Compounds, 3-Ring / chemistry
  • Heterocyclic Compounds, 3-Ring / pharmacology*
  • Humans
  • Models, Molecular
  • Molecular Structure
  • Receptors, Glucocorticoid / agonists*
  • Stereoisomerism
  • Structure-Activity Relationship
  • Thiadiazoles / chemistry
  • Thiadiazoles / pharmacology*
  • Urea / analogs & derivatives
  • Urea / chemistry
  • Urea / pharmacology*

Substances

  • Heterocyclic Compounds, 3-Ring
  • Receptors, Glucocorticoid
  • Thiadiazoles
  • Urea