Beta-selective arabinofuranosylation using a 2,3-O-xylylene-protected donor

Org Lett. 2010 Aug 20;12(16):3686-9. doi: 10.1021/ol101520q.

Abstract

Reported is a novel stereoselective beta-arabinofuranosylation that makes use of a conformationally restricted 2,3-O-xylylene-protected arabinofuranosyl donor. Optimization of the reaction conditions showed that factors including the structure of the acceptor alcohol, substrate concentration, and protecting group on O-5 of the donor affect the stereochemical outcome of the glycosylation. To demonstrate the utility of the methodology, the synthesis of an oligosaccharide fragment from the mycobacterial cell wall polysaccharide lipoarabinomannan was carried out.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Combinatorial Chemistry Techniques
  • Glycosylation
  • Lipopolysaccharides / chemistry*
  • Mannose / analogs & derivatives*
  • Mannose / chemical synthesis*
  • Mannose / chemistry
  • Molecular Structure
  • Mycobacterium / chemistry*
  • Oligosaccharides / chemical synthesis*
  • Oligosaccharides / chemistry
  • Stereoisomerism
  • Xylenes / chemistry

Substances

  • Lipopolysaccharides
  • Oligosaccharides
  • Xylenes
  • lipoarabinomannan
  • Mannose