tetrasaccharide in high overall yield. The approach enables the rapid assembly of 33 linear or branched fully protected oligosaccharides using designed building blocks. These fully protected oligosaccharides have been partially or completely deprotected to create 29 more structures to further increase the diversity of the library.
寡糖文库的组装已采用“一锅法”以实用和有效的方式实现。借助巯基糖苷的异头反应性值,使用具有一个游离羟基的巯基糖苷(
单糖或二糖)作为受体和供体,再结合另一种完全保护的巯基糖苷,可以选择性地形成二糖或三糖,而不会自缩合,随后原位与无异性的糖苷(
单糖或二糖)反应,以高总收率形成三糖或四糖。该方法可以使用设计的构建基块快速组装33种直链或支链完全保护的
寡糖。