Development of a practical solid-phase synthesis approach to 1,3,5-triazepan-2,6-diones
作者:Joel Boeglin、Claire Venin、Gilles Guichard
DOI:10.1016/j.tet.2012.06.051
日期:2012.9
1,3,5-Triazepan-2,6-diones are a class of conformationally restricted heterocycles derived from dipeptides. With the aim to develop a general and practical method useful for library production, three polymer-assisted syntheses, all based on a catch and release approach, have been evaluated and compared. The method involving a Hofmann rearrangement of N-Boc dipeptide carboxamides and subsequent trapping
1,3,5-Triazepan-2,6-diones是衍生自二肽的一类受构象限制的杂环。为了开发一种适用于文库生产的通用实用方法,已对三种均基于捕获和释放方法的聚合物辅助合成方法进行了评估和比较。发现该方法涉及N- Boc二肽羧酰胺的霍夫曼重排以及随后将异氰酸酯截留在聚合物负载的N-羟基琥珀酰亚胺(PS-HOSu)上,是最可靠,用途最广泛的方法,可快速进入1,3,5 -triazepan-2,6-dione骨架。