Syntheses and structures of anomeric quaternary ammonium β-glucosides and comments on the anomeric C–N bond lengths
作者:Lisa Iddon、Ryan A. Bragg、John R. Harding、Chandrakala Pidathala、John Bacsa、Anthony J. Kirby、Andrew V. Stachulski
DOI:10.1016/j.tet.2009.05.086
日期:2009.8
We report convenient syntheses of anomeric quaternary ammonium β-glucosides in both protected and deprotected forms, together with X-ray structural investigations of two of the products. Both the quaternisation of a protected anomeric N,N-(dimethylamino)glucose, derived in two high-yielding steps from the anomeric azide, and the direct reaction of glucose or 6-O-trityl glucose with a secondary amine
我们报告了保护和脱保护形式的端粒异构季铵β-葡萄糖苷的方便合成方法,以及两种产品的X射线结构研究。受保护的异头N,N-(二甲基氨基)葡萄糖的季铵化作用,是在两个高产步骤中从异头叠氮化物衍生而来的,并且葡萄糖或6- O-三苯甲基葡萄糖与仲胺直接反应,然后进行保护和季铵化是可行的路线。我们还讨论了在立体电子效应方面观察到的C–N键长和产物稳定性的重要性。