Investigation of glycosylating properties of 1-deoxy-1-ethoxysulfonyl-hept-2-ulopyranosyl derivatives. Synthesis of a new sulfonic acid mimetic of the sialyl Lewis X tetrasaccharide
作者:Magdolna Csávás、Gábor Májer、Mihály Herczeg、Judit Remenyik、László Lázár、Attila Mándi、Anikó Borbás、Sándor Antus
DOI:10.1016/j.carres.2011.04.027
日期:2011.9
Glycosylation reactions of the ethylthio, bromo and chloro derivatives of 1-deoxy-1-ethoxysulfonyl-hept-2-ulopyranose were studied applying different acceptors under different conditions. Elimination side-reactions affording exo- and endoglycals occured in all cases, however, with different proportions. Glycosyl chloride donor was applied to glycosylate a trisaccharide acceptor obtaining a new sulfonic
研究了在不同条件下使用不同受体的1-脱氧-1-乙氧基磺酰基-庚-2-铀吡喃糖的乙硫基,溴基和氯基衍生物的糖基化反应。在所有情况下,产生外切糖和内切糖的消除副反应发生的比例不同。糖基氯供体被用于糖基化三糖受体,以高收率获得了新的唾液酸路易斯X四糖的磺酸模拟物。