Carbohydrate mimic of 2-deoxystreptamine for the preparation of conformationally constrained aminoglycosides
作者:Guuske F. Busscher、Sebastiaan (Bas) A.M.W. van den Broek、Floris P.J.T. Rutjes、Floris L. van Delft
DOI:10.1016/j.tet.2007.02.006
日期:2007.4
The synthesis of a carbohydrate mimic of 2-deoxystreptamine (2-DOS) is described starting from d-ribose. Crucial steps of the synthesis involve a stereoselective nitroaldol condensation and deoxygenation via elimination–in situ reduction. Moreover, glycosylation of the carbohydrate 2-DOS derivative with a phenyl thioglycoside donor in the presence of TTBP and AgOTf followed by ring-closing metathesis
描述了从d-核糖开始的2-脱氧链胺胺(2-DOS)的碳水化合物模拟物的合成。合成的关键步骤包括立体选择性硝基醛缩合和通过消除原位还原而进行的脱氧。此外,在TTBP和AgOTf存在下,用苯基硫代糖苷供体对碳水化合物2-DOS衍生物进行糖基化,然后进行闭环复分解,得到构象受限的氨基糖苷类似物。