作者:Régis Périon、Lénaı̈ck Lemée、Vincent Ferrières、Raphaël Duval、Daniel Plusquellec
DOI:10.1016/j.carres.2003.09.004
日期:2003.11
Synthesis of the oligosaccharide domain of acarbose was reinvestigated and was optimally performed using a maltosidic acceptor, already bearing a alpha-D-Glc-(1-->4)-D-Glc bond, and a new D-fucopyranosyl donor. The crucial glycosylation step was improved by varying three different parameters and notably by focusing on the C-4 protecting group of the fucosyl residue, solvent and promoter. The resulting
对阿卡波糖的寡糖结构域的合成进行了重新研究,并使用已经带有α-D-Glc-(1-4)-D-Glc键的麦芽糖受体和新的D-呋喃核糖基供体进行了优化。关键的糖基化步骤通过改变三个不同的参数得到了改善,特别是着眼于岩藻糖基残基,溶剂和促进剂的C-4保护基团。为了为设计新的阿卡波糖类似物打开进一步的衍生前景,将所得的三糖进一步转化为亲电子物质。用叠氮化物和硫氰酸根阴离子有效地进行了取代反应。还合成了另外两种可能有趣的三糖化合物,即C-4III胺和相应的异硫氰酸酯。