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    • 8. 发明授权
    • Solvent-free synthesis of ethereally substituted blocked monosaccharides
and the selective hydrolysis thereof
    • 无溶剂合成醚基取代的封闭单糖及其选择性水解
    • US5344924A
    • 1994-09-06
    • US044085
    • 1993-04-06
    • Sudershan K. Arora
    • Sudershan K. Arora
    • C07H1/00C07H9/04C07H15/04
    • C07H15/04
    • A solvent-free method for synthesizing an ethereally-substituted, blocked monosaccharide comprising the steps of:1) mixing, in the absence of solvent, a partially blocked monosaccharide unblocked at one position, an alkyl halide or a substituted alkyl halide, and an anhydrous alkali base;2) heating the mixture to a temperature sufficient to allow the mixture to react;3) maintaining the mixture at a suitable temperature for a time sufficient to form an ethereally-substituted blocked monosaccharide and drive off any water produced;4) removing any unreacted alkyl halide or substituted alkyl halide from the mixture;5) recovering the ethereally-substituted blocked monosaccharide product from the mixture; and, optionally,6) selectively hydrolyzing the ethereally-substituted blocked monosaccharide product to remove one or more of the acetal blocking groups.
    • 用于合成醚取代的封端单糖的无溶剂方法,包括以下步骤:1)在不存在溶剂的情况下,将在一个位置上未封端的部分封闭的单糖,烷基卤或取代的烷基卤和无水物混合 碱碱 2)将混合物加热到足以使混合物反应的温度; 3)将混合物保持在合适的温度下足以形成醚取代的封闭单糖并驱除所产生的水; 4)从混合物中除去任何未反应的烷基卤或取代的烷基卤; 5)从混合物中回收醚取代的封闭单糖产物; 和任选地,6)选择性地水解醚取代的封闭单糖产物以除去一个或多个缩醛封闭基团。