A convenient procedure for the solid-phase synthesis of hydroxamic acids on PEGA resins
作者:Nitin S. Nandurkar、Rico Petersen、Katrine Qvortrup、Vitaly V. Komnatnyy、Kennedy M. Taveras、Sebastian T. Le Quement、Robin Frauenlob、Michael Givskov、Thomas E. Nielsen
DOI:10.1016/j.tetlet.2011.10.103
日期:2011.12
An efficient method for the solid-phase synthesis of hydroxamic acids is described. The method comprises the nucleophilic displacement of esters immobilized on PEGA resins with hydroxylamine/sodium hydroxide in isopropanol. The hydroxyaminolysis protocol is compatible with a broad range of PEGA-supported peptide and peptidomimetic esters. The methodology was found to be compatible with two new strategies
描述了一种固相合成异羟肟酸的有效方法。该方法包括用羟胺/氢氧化钠在异丙醇中固定在PEGA树脂上的酯进行亲核取代。羟氨解方案可与多种PEGA支持的肽和拟肽酯相容。发现该方法与分别用于合成固载内酰胺和二酮哌嗪的两种新策略兼容,二者均依赖于环状N-酰基亚胺离子与富电子芳族化合物和杂芳族化合物的高分子间和分子内反应性,最终提供了高纯度的异羟肟酸衍生物。