Synthesis of New Pseudodisaccharide Aminoglycoside Antibiotics from Carbohydrates.
作者:ISTVÁN F. PELYVÁS、MÁRIA MÁDI-PUSKÁS、ZOLTÁN G. TÓTH、ZSOLT VARGA、MIKLÓS HORNYÁK、GYULA BATTA、FERENC SZTARICSKAI
DOI:10.7164/antibiotics.48.683
日期:——
Novel pseudodisaccharide-type aminocyclitol antibiotic models, built up from D-arabinose, D-ribose, D-glucosamine, L-ristosamine and L-acosamine have been synthesized by the glycosylation of. suitably protected (azido)deoxyinosose aglycones derived by the Ferrier carbocyclic ring transformation of carbohydrate precursors. An alternative approach to related pseudodisaccharides, based on the Ferrier carbocyclization of reducing disaccharides, has also been elaborated. This latter method extends the scope of the Ferrier reaction, by demonstrating that acid-labile 2-deoxydisaccharides can also be readily transformed into the corresponding pseudodisaccharides under the slightly acidic conditions of this ring-transformation.
通过糖基化反应,合成了由D-阿拉伯糖、D-核糖、D-葡糖胺、L-里斯托糖胺和L-阿科糖胺构成的新型pseudo二糖型氨基环醇抗生素模型。这些合成过程利用了从碳水化合物前体通过费里尔碳环变换得到的适当保护的(叠氮)去氧肌醇苷元。基于费里尔碳环化的还原二糖的另一种相关pseudo二糖合成方法也得到了详细阐述。这种方法通过展示在稍微酸性条件下,不稳定的2-脱氧二糖也能容易地转化为相应的pseudo二糖,从而扩展了费里尔反应的应用范围。