Structure-activity relationship (SAR) of the α-amino acid residue of potent tetrahydroisoquinoline (THIQ)-derived LFA-1/ICAM-1 antagonists

Bioorg Med Chem Lett. 2011 Jan 1;21(1):307-10. doi: 10.1016/j.bmcl.2010.11.014. Epub 2010 Nov 5.

Abstract

This letter describes the structure-activity relationship (SAR) of the 'right-wing' α-amino acid residue of potent tetrahydroisoquinoline (THIQ)-derived LFA-1/ICAM-1 antagonists. Novel (S)-substituted heteroaryl-bearing α-amino acids have been identified as replacements of the 'right-wing' (S)-2,3-diaminopropanoic acid (DAP) moiety. Improvement of potency in the Hut-78 assay in the presence of 10% human serum has also been achieved.

MeSH terms

  • Amino Acids / chemistry*
  • Animals
  • Intercellular Adhesion Molecule-1 / chemistry*
  • Intercellular Adhesion Molecule-1 / metabolism
  • Lymphocyte Function-Associated Antigen-1 / chemistry*
  • Lymphocyte Function-Associated Antigen-1 / metabolism
  • Male
  • Rats
  • Rats, Sprague-Dawley
  • Structure-Activity Relationship
  • Tetrahydroisoquinolines / chemical synthesis
  • Tetrahydroisoquinolines / chemistry*
  • Tetrahydroisoquinolines / pharmacokinetics
  • beta-Alanine / analogs & derivatives
  • beta-Alanine / chemistry

Substances

  • Amino Acids
  • Lymphocyte Function-Associated Antigen-1
  • Tetrahydroisoquinolines
  • beta-Alanine
  • Intercellular Adhesion Molecule-1
  • 2,3-diaminopropionic acid