2-amino-2-deoxy glucose by selective introduction of different N-protecting (NPhth and NHTroc) and anomeric leaving groups (ethylthio and phenylthio) enabled highly efficient oligosaccharide synthesis in a one-pot manner. One-pot sequential glycosylation of three and four units of 2-amino-2-deoxy glucose gave trisaccharides and tetrasaccharide in 50-81% yields.
[反应:见正文]通过选择性引入不同的N-保护基(NPhth和NHTroc)和异头离去基团(乙
硫基和苯
硫基)来调节衍生自2-
氨基-2-脱氧
葡萄糖的糖基供体的反应性,可实现高效的
寡糖合成一锅法。一锅顺序糖基化的三个和四个单元的2-
氨基-2-脱氧
葡萄糖依次产生三糖和四糖,收率为50-81%。