ligation reactions is reported herein. The corresponding peptide hydrazides can be readily prepared using solid-phase peptide synthesis, and subsequently activated by acetylacetone (acac) without exogenous thiol additives. Strained peptidyl thiolactones could be the possible reactive intermediates that drastically accelerate the reaction rates at the sterically demanding proline and valine sites. This developed
本文报道了一种在连接反应中激活C端 4-巯基脯
氨酸或
青霉胺肽酰
肼的有效方法。相应的肽酰
肼可以使用固相肽合成轻松制备,然后在没有外源性
硫醇添加剂的情况下由
乙酰丙酮 (acac) 激活。应变的肽基
硫内酯可能是可能的反应中间体,可在空间要求高的脯
氨酸和缬
氨酸位点显着加快反应速率。该开发的协议允许以一锅方式进行顺序肽连接,并加快各种糖基化形式的粘蛋白 1 (MUC-1) 可变数串联重复 (VNTR) 三聚体的组装。