A concise synthesis of the 6-o- and 6′-o-sulfated analogues of the sialyl lewis X tetrasaccharide
作者:Anup Kumar Misra、Yili Ding、John B Lowe、Ole Hindsgaul
DOI:10.1016/s0960-894x(00)00207-9
日期:2000.7
The octyl glycoside of the sialyl Lewis X tetrasaccharide and its 6-O-sulfated and 6'-O-sulfated analogues were chemically synthesized in a concise manner starting from readily accessible monosaccharide intermediates. The synthesis involved formation of an orthogonally protected tetrasaccharide intermediate from which all three materials were prepared. A selective catalytic hydrogenolysis of four O-benzyl
唾液基路易斯X四糖的辛基糖苷及其6-O-硫酸化和6'-O-硫酸化的类似物是从容易获得的单糖中间体开始以简明的方式化学合成的。合成涉及形成正交保护的四糖中间体,由此制备所有三种材料。在4,6-O-亚苄基的存在下对四种O-苄基醚的选择性催化氢解是合成流程中的关键步骤。