Covalent, irreversible small-molecule inhibitors that modify the sulfenyl form (i.e., sulfenic acid, RSOH and sulfenamide, RSNR'2) of therapeutically important proteins (particularly kinases and phosphatases) are disclosed, where the compositions include a compound having a substituted aryl or heterocyclic core structure that promotes binding interactions with a specific protein, and a nucleophilic reaction center (carbon, nitrogen, sulfur, or phosphorous) that is capable of forming a covalent bond with a sulfenic acid- or sulfenamide-modified cysteine residue in the protein. Methods for synthesizing these compounds are also disclosed, as well as methods of using them for determining the bioactivity of a chemical composition comprising an active compound toward a specific protein and for determining the potency of an inhibitor against a specific protein.
揭示了用于修饰治疗重要蛋白质(特别是激酶和
磷酸酶)的亚
硫酰形式(即
亚硫酸,RSOH和亚
硫酰胺,RSNR'2)的共价、不可逆的小分子
抑制剂,其中组合物包括具有取代芳基或杂环核结构的化合物,促进与特定蛋白质的结合相互作用,以及能够与蛋白质中的
亚硫酸或亚
硫酰胺修饰的半胱
氨酸残基形成共价键的亲核反应中心(碳、氮、
硫或
磷)。还揭示了合成这些化合物的方法,以及使用它们确定包含活性化合物的
化学组合物对特定蛋白质的
生物活性以及确定
抑制剂对特定蛋白质的效力的方法。