作者:Hans Günter Thomas、Jean-Luc Mieusset
DOI:10.1016/j.tet.2008.03.056
日期:2008.5
several glucosides were produced with yields greater than 77% using DDQ in CH2Cl2 as oxidizing agent. For electrolyses, glycosides of trimethylhydroquinone are preferably used because their low oxidation potentials allow the utilization of an undivided cell. The synthesis of the glycosyl donors was achieved with high efficiency by direct coupling of the phenols with peracetylated monosaccharides employing
作为一类新的糖基供体,对苯二酚糖苷可用于糖基化反应。它们的活化可以电化学或在均相化学条件下进行。常规地,使用CH 2 Cl 2中的DDQ作为氧化剂,生产几种葡糖苷,产率大于77%。对于电解,优选使用三甲基氢醌的糖苷,因为它们的低氧化电位允许利用未分裂的细胞。糖基供体的合成通过使用三氟化硼醚化物作为催化剂,通过使酚与过乙酰化的单糖直接偶联而高效地实现。对苯二酚衍生物的氧化也可用于生成其他稳定的阳离子。