Base-promoted 5-exo-dig cyclizations of aza-propargylglycinamides provided N-amino-imidazolin-2-one peptide mimics, which exhibited turn geometry in X-ray crystallographic and NMR spectroscopic analyses. Sonogashira coupling prior to cyclization afforded N-amino-imidazolin-2-ones with diverse 4-position aromatic substituents with potential to serve as Phe and Trp mimics.
氮杂-炔丙基甘
氨酰胺的碱基促进 5 -exo-dig环化提供了N-
氨基-
咪唑啉-2-one
肽模拟物,其在 X 射线晶体学和 NMR 光谱分析中表现出转向几何。环化之前的 Sonogashira 偶联提供了具有不同 4 位芳族取代基的N-
氨基-
咪唑啉-2-酮,具有用作 Phe 和 Trp 模拟物的潜力。