Zinc Triflate-Promoted Glycosidation: Synthesis of Lipid A Disaccharide Intermediates.
作者:Kiyoshi NAKAYAMA、Kunio HIGASHI、Tsunehiko SOGA、Kouichi UOTO、Tsuneo KUSAMA
DOI:10.1248/cpb.40.2909
日期:——
heavy metal salts as a promoter in the Koenigs-Knorr type glycosidation reaction in the synthesis of lipid A disaccharide intermediates. It readily promoted the reaction of a complex glycosyl bromide with a reducing sugar moiety and gave the disaccharide with beta-selectivity in good yield. This method would be suitable for the bulk preparation of lipid A disaccharide intermediates.
发现三氟甲磺酸锌在脂质A二糖中间体的合成中作为Koenigs-Knorr型糖苷化反应的促进剂优于重金属盐。它易于促进复杂的糖基溴化物与还原糖部分的反应,并以良好的产率得到具有β-选择性的二糖。该方法将适合于脂质A二糖中间体的批量制备。