Gold-Catalyzed Reactions of 2-C-Branched Carbohydrates: Mild Glycosidations and Selective Anomerizations
作者:Srinivasa Rao Vidadala、Tukaram M. Pimpalpalle、Torsten Linker、Srinivas Hotha
DOI:10.1002/ejoc.201100134
日期:2011.5
catalysis to transglycosylated products. The method is applicable for the convenient synthesis of disaccharides. Without nucleophile a selective anomerization occurs, giving first access to α-configured 2-C-nitromethyl glycosides. The results are interesting for the mechanism of gold-catalyzed glycosidations.
2-C-支链甲基糖苷在金催化下与各种醇反应生成转糖基化产物。该方法适用于方便的双糖合成。在没有亲核试剂的情况下,会发生选择性异构化,从而首先获得 α-构型的 2-C-硝基甲基糖苷。结果对于金催化糖苷化的机制很有趣。