Coupling of an advanced tri-functional building block by reductive amination leads to a protected backbone of a new archetype of foldamer
作者:Guillaume Gros、Emma Fowler、Jens Hasserodt
DOI:10.1016/j.tet.2014.07.010
日期:2014.9
explore a new archetype of foldamer that preferentially folds in water, we designed two types of tri-functional building blocks with increasingly favorable ketone deprotection properties. Both were selected for their ease of synthetic access and the availability of bulk starting material. While the first building block proved unsuitable for efficient coupling by reductive amination, the second gave rise
为了推进我们的项目,以探索一种优先在水中折叠的新型折叠剂原型,我们设计了两种类型的三官能基砌块,这些酮基的脱保护性能越来越好。选择这两种产品是因为它们易于合成,并且容易获得大量起始原料。事实证明,第一个结构单元不适合通过还原胺化进行有效偶联,而第二个单元根据质谱监测显示出几乎定量的产率。因此,它有效地变成了保护的二聚体和四聚体。尽管鉴于它们的高极性/水溶性,它们在彻底的酮脱保护之前进行随后的纯化在制备上是不切实际的,