New Oligosaccharide Analogues: Non-Glycosidically Linked Thioether-Bridged Pseudodisaccharides
作者:Ian Cumpstey
DOI:10.1055/s-2006-947338
日期:2006.7
The synthesis of six disaccharide analogues is reported. The pseudodisaccharides each consist of two monosaccharide residues linkednon-glycosidically via a thioether functionality; both C 2 -symmetric and unsymmetrically substituted examples are described. The synthesis was achieved by first introducing an acetate-protected sulfur into partially protected carbohydrates by S N 2 displacement of sulfonate
报道了六种二糖类似物的合成。每个假双糖由两个单糖残基组成,通过硫醚官能团非糖苷连接;描述了C 2 对称和不对称取代的实例。该合成是通过首先通过硫代乙酸酯取代磺酸酯的 SN 2 将乙酸酯保护的硫引入部分保护的碳水化合物中来实现的。硫的脱乙酰之后用另一种碳水化合物磺酸盐衍生物处理,第二次 SN 2 置换得到假双糖产物。
Non-Glycosidically Linked Pseudodisaccharides: Thioethers, Sulfoxides, Sulfones, Ethers, Selenoethers, and Their Binding to Lectins
作者:Ian Cumpstey、Clinton Ramstadius、Tashfeen Akhtar、Irwin J. Goldstein、Harry C. Winter
DOI:10.1002/ejoc.200901481
日期:2010.4
Hydrolytically stable non-glycosidicallylinked tail-to-tail pseudodisaccharides are linked by a single bridging atom remote from the anomeric centre of the constituent monosaccharides. Some such pseudodisaccharides with sulfur or oxygen bridges were found to act as disaccharide mimetics in their binding to the Banana Lectin and to Concanavalin A. A versatile synthetic route to a small library of such
水解稳定的非糖苷连接的尾对尾假二糖通过远离组成单糖的异头中心的单个桥原子连接。发现一些具有硫桥或氧桥的此类假二糖在与香蕉凝集素和刀豆球蛋白 A 结合时充当二糖模拟物。描述了一种合成此类化合物的小型文库的通用途径。