ligation site. The aziridine-mediated peptide ligation concept is exemplified using H(2)O as the nucleophile, producing a Xaa-Thr linkage (where Xaa can be an epimerizable and hindered amino acid). The overall process is compatible with a variety of unprotected amino acid functionality, most notably the N-terminal and Lys side chain amines.
报道了通过未保护的肽
硫代酸和 NH
氮丙啶-2-羰基肽的 Cu(II) 促进偶联合成含
氮丙啶肽。所得 N-酰化
氮丙啶-2-羰基肽的独特反应性促进了它们随后的区域选择性和立体选择性亲核开环,以产生在连接位点被特异性修饰的未保护肽。
氮丙啶介导的肽连接概念以 H(2)O 作为亲核试剂为例,产生 Xaa-Thr 连接(其中 Xaa 可以是差向异构和受阻
氨基酸)。整个过程与各种未受保护的
氨基酸官能团兼容,最显着的是 N 端和 Lys 侧链胺。