Total Synthesis of Sialylated and Sulfated Oligosaccharide Chains from Respiratory Mucins
作者:Jie Xia、James L. Alderfer、Conrad F. Piskorz、Khushi L. Matta
DOI:10.1002/1521-3765(20000915)6:18<3442::aid-chem3442>3.0.co;2-v
日期:2000.9.15
The total syntheses of several complex oligosaccharide moieties that occur in the core structure of sulfated mucins are reported. A trisaccharide acceptor was obtained through regio- and stereoselective sialylation of methyl (6-O-pivaloyl-beta-D-galactopyanosyl)(1-->3)-4,6-O-benzylidene-2-a cetamido-2-deoxy-alpha-D-galactopyranoside with a novel sialyl donor. A tetrasaccharide, pentasaccharide, and
据报道,在硫酸化粘蛋白的核心结构中存在的几个复杂的寡糖部分的总合成。通过对甲基(6-O-新戊酰基-β-D-吡喃半乳糖基)(1-> 3)-4,6-O-亚苄基-2-a cetamido-2-deoxy的区域和立体选择性唾液酸化获得三糖受体-α-D-吡喃半乳糖苷与新型唾液酸供体。在成功制备并使用了二糖供体,三糖供体,二糖受体和三糖受体结构单元之后,以可预测和可控制的方式构建了具有高区域和立体选择性的四糖,五糖和六糖。最后,采用温和的氧化裂解方法在存在苄基的情况下选择性去除2-萘甲基(NAP)。