Toward the total synthesis of vineomycin B2: application of an efficient glycosylation methodology using 2,3-unsaturated sugars
作者:Kaname Sasaki、Shuichi Matsumura、Kazunobu Toshima
DOI:10.1016/j.tetlet.2007.07.145
日期:2007.9
The application of an efficient glycosylation methodology using 2,3-unsaturated sugars to synthesize critical precursors required for the total synthesis of an antibiotic, vineomycin B2 (1), was demonstrated. The required disaccharide, the acurosyl rhodinose derivative of 1, was prepared by chemoselective glycosylation using a 2,3-saturated glycosyl acetate corresponding to the rhodinose moiety and
证明了使用有效的糖基化方法的应用,该方法使用2,3-不饱和糖来合成抗生素vinevinecin B 2(1)的总合成所需的关键前体。所需的二糖,即1的氨基磺基罗丹糖衍生物,是通过化学选择糖基化反应制得的,使用的化学成分为2,3-饱和的糖基乙酸酯,对应于若丹糖部分; 2,3-的不饱和乙酸基糖基乙酸酯,对应于核糖部分。此外,由β-氧代叔醇和若丹糖组成的1的右侧链是通过在离子液体中减压下使用2,3-不饱和乙酸糖基酯通过强力的糖基化方法构建的。