peptidomimetic. The peptidyl amidine units were synthesized by the reduction of a key amidoxime (N-hydroxyamidine) precursor, which was prepared from nitrile oxide components as an aminoacyl or peptidyl equivalent. This nitrile oxide-mediated C–N bond formation was also used for peptide macrocyclization, in which the amidoxime group was converted to peptide bonds under mild acidic conditions. Syntheses of
基于肽键羰基(C O)基团被亚
氨基(C NH)基团取代,设计了idine型肽键等位
基因。等规部分的带正电性质类似于还原的酰胺型拟肽。通过还原关键的mid胺
肟(N-羟基am)前体来合成肽基am单元,该关键的ox胺
肟前体是由作为腈酰基或肽基当量的腈氧化物组分制备的。这种由
一氧化氮介导的C–N键的形成也用于肽大环化,其中a胺
肟基团在温和的酸性条件下转化为肽键。提出了使用两种方法合成环状
RGD肽和拟肽的方法,以及它们对整联蛋白介导的细胞附着的抑制活性。