Novel macrocyclic dipicolinic acid acylated peptides based on upper rim bridged peptidocalix[ 4]arenes, peptido-pyridines or hybrid structures of both, were synthesized as potential molecular metallacages and chemosensors. While conventional azide or mixed anhydride (ethyl chloroformate) peptide couplings served well for assembling the L-tyrosine or L-ornithine peptide backbones, the acid chloride of pyridine-2,6-dicarboxylic acid (dipicolinic acid) acid served as the complementary acylating agent. The structure assignment of the new compounds was based on chemical and spectroscopic evidences. Some of these compounds exhibit antimicrobial activities.
基于上缘桥联的肽联四醚,肽-吡啶或两者混合结构的新型大环二吡啯酸酰化肽被合成为潜在的分子金属笼和化学传感器。传统的叠氮或混合酸酐(氯甲酸乙酯)肽偶联反应可用于组装L-酪氨酸或L-鸟氨酸肽骨架,而吡啶-2,6-二羧酸(二吡啯酸)的酸氯化物则用作补充酰化试剂。新化合物的结构鉴定基于化学和光谱证据。其中一些化合物表现出抗菌活性。