proteins, providing novel structure and electronic perturbation. The present work demonstrates an operationally-simple cysteine arylation reaction 2-nitro-substituted arylboronic acids, promoted by a simple nickel(II) salt. The process exhibits strikingly fast reaction rates under physiological conditions in purely aqueous media with excellent selectivity toward cysteine residues. Cysteine arylation of
半胱
氨酸残基的S-酰化是蛋白质位点特异性修饰的一种越来越强大的工具,它提供了新颖的结构和电子扰动。本工作证明了操作上简单的半胱
氨酸芳基化反应2-硝基取代的芳基
硼酸,由简单的
镍(II)盐促进。该方法在生理条件下,在纯
水介质中对半胱
氨酸残基具有优异的选择性,显示出惊人的快速反应速率。天然蛋白质和肽的半胱
氨酸芳基化反应可以连接有用的反应性手柄,用于装订,成像或进一步偶联。