Reaction of N-trityl amino acids with BOP: Efficient synthesis of t-butyl esters as well as N-trityl serine- and threonine-β-lactones
作者:Karen M Sliedregt、Arie Schouten、Jan Kroon、Rob M.J Liskamp
DOI:10.1016/0040-4039(96)00805-2
日期:1996.6
Upon exposure to methoxymethylamine and BOP, the stable hydroxybenzotriazolyl amide of TrPheOH was isolated instead of the expected Weinreb amide. This amide behaves as an active amide similar to the Weinreb amide and could be used, among others, for the synthesis of t-Bu esters. Reaction of N-trityl serine and threonine led to the corresponding β-lactones in unprecedented high yields.
暴露于甲氧基甲基胺和BOP后,分离出稳定的TrPheOH羟基苯并三唑基酰胺,而不是预期的Weinreb酰胺。该酰胺表现出类似于Weinreb酰胺的活性酰胺,并且可以用于合成叔丁基酯。N-三苯甲基丝氨酸和苏氨酸的反应以前所未有的高收率产生了相应的β-内酯。