and cyano) substituted glycals with a range of sugar derived thiols gave the corresponding β-manno type 3-deoxy-3-S-disaccharides with full regio- and stereoselectivity. The configuration of the glycals (arabino vs. lyxo) and the size of the protecting groups had no significant effect on the outcome of the transformations. Formation of by-products was tracked down by LCMS studies and correlated with
                                    自由基hydrothiolation ö -peracylated 1-C-(
氨基甲酰基,甲氧基羰基和
氰基)取代的烯糖与一系列的糖衍生的
硫醇,得到相应的β-甘露键入3-脱氧-3-小号具有完全区域选择性-disaccharides和立体选择性。糖基的构型(
阿拉伯糖vs. lyxo)和保护基的大小对转化的结果没有显着影响。通过LCMS研究追踪了副产物的形成,并将其与双键的电子密度相关联,以表明反应对于COOMe,特别是CONH 2基团作为1-C取代基是合成有用的。