Synthesis of and evaluation of lipid A modification by 4-substituted 4-deoxy arabinose analogs as potential inhibitors of bacterial polymyxin resistance

Bioorg Med Chem Lett. 2008 Feb 15;18(4):1507-10. doi: 10.1016/j.bmcl.2007.12.061. Epub 2007 Dec 27.

Abstract

Three sets of novel 4-deoxy-l-arabinose analogs were synthesized and evaluated as potential inhibitors of the bacterial resistance mechanism in which lipid A, on the outer membrane, is modified with 4-amino-4-deoxy-l-arabinose (l-Ara4N). One compound diminished the transfer of l-Ara4N onto lipid A. These results suggest that small molecules might be designed that would effect the same reversal of bacterial resistance observed in genetic knockouts.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Arabinose / analogs & derivatives*
  • Arabinose / chemical synthesis
  • Arabinose / pharmacology
  • Azides / chemical synthesis
  • Azides / pharmacology
  • Drug Resistance, Microbial
  • Drug Synergism
  • Hexosyltransferases / antagonists & inhibitors
  • Lipid A / metabolism*
  • Polymyxins / pharmacology*

Substances

  • Anti-Bacterial Agents
  • Azides
  • Lipid A
  • Polymyxins
  • Arabinose
  • Hexosyltransferases
  • L-Ara4N transferase