reports a new method for the synthesis of biologically important DKP scaffolds based on an intramolecular nucleophilic α‐addition of general amides towards an alkynamide system. The utility of this umpolung cyclization mediated by trimethyl phosphine and l‐glutamic acid is highlighted by its application to the concise total syntheses of 6‐methoxyspirotryprostatin B (the first total synthesis), spirotryprostatin A
环二肽2,5-二酮
哌嗪(DKP)是药物和天然
生物碱中的特权结构单元。这项工作报告了一种新的合成重要
生物学DKP支架的方法,该方法基于一般酰胺的分子内亲核α加成到炔酰胺系统。由
三甲基膦和l-谷
氨酸介导的这种蛋白环环化的实用性通过将其应用于简明的6-甲氧基spirotryprostatin B(首次合成),spirotryprostatin A和spirotryprostatin B的简明总合成中而得到了应用。