Three novel α-cyclodextrin tripods bearing three ureido-bipyridyl tethers symmetrically distributed on their upper rim in the A,C,E positions and alternated with hydroxyl, acetyl or lauryl moieties were prepared by the tandem StaudingerâAzaâWittig aliasâphosphine imideâ strategy. The functionalisations on the cyclodextrin upper rim allowed a fine-tuning of the metal complexation and amphiphilic properties.
通过串联的Staudinger–Aza–Wittig(又称“
磷氮酰胺”)策略,制备了三种新型α-
环糊精三脚架,三种
尿素-双
吡啶连接体对称地分布在其上缘的A、C、E位置,并与羟基、乙酰基或月桂基交替排列。
环糊精上缘的功能化使得
金属络合和两亲性特性的微调成为可能。