Facile Approach to 2-Acetamido-2-deoxy-β-<scp>d</scp>-Glucopyranosides via a Furanosyl Oxazoline
作者:Ye Cai、Chang-Chun Ling、David R. Bundle
DOI:10.1021/ol051523k
日期:2005.9.1
A concise and convenient route that may be easily scaled is reported for the preparation of unprotected beta-glucopyranosides of N-acetyl-D-glucosamine. Reaction of a wide variety of alcohols with a reactive, readily prepared furanosyl oxazoline under acidic conditions affords the corresponding beta-D-glucopyranosides in good to high yields. Primary alcohols gave only beta-D-glucopyranosides. A mechanism is proposed for this transformation.
desulfurization and gave the n-hexyl glycoside product, whereas the 6-benzylthiohexyl analogue gave the desired disulfide trisaccharide dimer. This study constitutes a particularly efficient and convergent preparation of these three Le(x) analogues.