Anomeric Thioglycosides Give Different Anomeric Product Distributions under NIS/TfOH Activation
作者:Helle H. Trinderup、Tatjana L. P. Sandgaard、Line Juul-Madsen、Henrik H. Jensen
DOI:10.1021/acs.joc.1c03001
日期:2022.3.18
The reaction of a series of anomeric thioglycosides with various glycosyl acceptors and N-iodosuccinimide/catalytic triflic acid was investigated with respect to reactivity and anomeric selectivity. In general, β-configured donors were found to give a more β-selective reaction outcome compared to their α-configured counterparts. The relative reactivity of various thioglycosides was measured through
研究了一系列异头硫苷与各种糖基受体和N-碘代琥珀酰亚胺/催化三氟甲磺酸的反应的反应性和异头选择性。一般而言,发现 β 配置的供体与其 α 配置的对应物相比,会产生更多的 β 选择性反应结果。通过竞争实验测量了各种硫糖苷的相对反应性,确定了以下顺序:苯基、甲苯基、甲基、乙基、异丙基和1-金刚烷基。