Diversity of C-linked neoglycopeptides for the exploration of subsite-assisted carbohydrate binding interactions

Bioorg Med Chem Lett. 1998 May 19;8(10):1127-32. doi: 10.1016/s0960-894x(98)00182-6.

Abstract

Diversity of alpha-galactose based C-linked neoglycopeptides (1b, 2b, 3c, 4d, and 5d) has been developed to explore the importance of subsite-assisted carbohydrate binding interactions. Deprotected C-linked neoglycopeptides (1b, 2b, 3c, 4d, and 5d) were synthesized and tested in competitive inhibition assays using a model enzyme-linked lectin (e.g., Maclura pomifera). Compound 2b, with two alpha-galactoside units on the side chain of the lysine residue of the dipeptide backbone, exhibited a remarkable effect with a 2.82-fold increase in its inhibitory properties (IC50 1.48 mM) in comparison to 1b (IC50 4.18 mM).

MeSH terms

  • Binding Sites
  • Binding, Competitive
  • Dipeptides / chemical synthesis
  • Dipeptides / chemistry
  • Dipeptides / pharmacology
  • Glycopeptides / chemical synthesis*
  • Glycopeptides / chemistry
  • Glycopeptides / metabolism
  • Indicators and Reagents
  • Lectins / chemistry
  • Lysine
  • Models, Molecular
  • Plant Lectins*
  • Structure-Activity Relationship

Substances

  • Dipeptides
  • Glycopeptides
  • Indicators and Reagents
  • Lectins
  • Plant Lectins
  • maclurin
  • Lysine