First synthesis of 1,2,3-triazolo-linked (1,6)-α-<scp>d</scp>-oligomannoses (triazolomannoses) by iterative Cu(<scp>i</scp>)-catalyzed alkyne–azide cycloaddition
作者:Pavel Cheshev、Alberto Marra、Alessandro Dondoni
DOI:10.1039/b609734k
日期:——
The iterative copper(I)-catalyzedcycloaddition (rt or microwave) between an ethynyl alpha-C-mannoside and alkyl 6-azido-alpha-C-mannoside derivatives was suited to the (1,6)-ligation between alpha-D-mannose units through 1,4-disubstituted triazole bridges, thus resulting in the formation of linear oligomers (80-90% yield) with alternating triazole and mannose fragments up to a triazolo-pentamannose