derived from 2-methylisoserine, has been generalized. The unique electrophilic nature of this scaffold for nucleophilic substitution at a quaternary center with total inversion of its configuration, which was demonstrated computationally, allows for site-selective conjugation with various nucleophiles, such as anomeric thiocarbohydrates and pyridines. This strategy provides rapid access to complex thio
描述了一种使用含有环
氨基磺酸盐支架的肽进行位点和立体选择性肽修饰的方法。肽合成策略已被普遍化,该策略允许快速产生掺入衍生自2-甲基异
丝氨酸的
氨基磺酸酯残基的混合α/β-肽。该支架在四元中心的亲核取代及其构型完全颠倒的独特亲电子性质(通过计算证明)允许与各种亲核试剂(如异头
硫代
碳水化合物和
吡啶)进行位点选择性缀合。这种策略提供了快速获取复杂的
硫代糖基-α/β-缀合物和带电的α/β-肽的途径。