Preparation of stilbene-tethered nonnatural nucleosides for use with blue-fluorescent antibodies

J Org Chem. 2001 Mar 9;66(5):1725-32. doi: 10.1021/jo001676f.

Abstract

The synthesis of the first examples of stilbene-tethered hydrophobic C-nucleosides is described. Compounds of this type are targeted for use with our recently reported "blue-fluorescent antibodies" with the aim of probing native and nonnatural DNA. The nucleophilic addition of aryl Grignard reagents to either a protected 2'-deoxy-1'-chloro-ribofuranose or a protected 2'-deoxy-ribonolactone was the key synthetic step and afforded C-nucleosides in good yields. Both routes resulted in a final product that was >/=90% of the beta-anomer. Amide- and ether-based linkers for attachment of trans-stilbene to the nucleobase were assessed for utility during synthesis and in binding of the ligands to a blue-fluorescent monoclonal antibody. X-ray structures of each complex were obtained and serve as a guideline for second-generation stilbene-tethered C-nucleosides. The development of these hydrophobic nucleosides will be useful in current native and nonnatural DNA studies and invaluable for investigations regarding novel, nonnatural genomes in the future.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies / chemistry*
  • Crystallography, X-Ray
  • Fluorescence
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Nucleosides / chemical synthesis*
  • Stilbenes / chemistry*

Substances

  • Antibodies
  • Nucleosides
  • Stilbenes