unsymmetrical diarylphosphinic acid, a hapten aimed to produce catalytic antibodies for the hydrolysis of heterocyclic amides. The phosphinate functionality was selected as a mimic both of the tetrahedral intermediate and the transition state of higher energy along the reaction profile. The phenyl and 2,4,6-(trimethyl)-phenyl groups flanking the phosphinate were chosen in order to impose rotation around the
我们在本文中描述了新的不对称二芳基
次膦酸的合成,这是一种半抗原,旨在生产用于催化杂环酰胺
水解的催化
抗体。
次膦酸酯官能团被选择为模拟四面体中间体和沿反应曲线的较高能量的过渡态。选择
次膦酸酯侧翼的苯基和2,4,6-(三甲基)-苯基是为了强加围绕P–C键的旋转,这一选择从头算起就得到了支持。这种新的半抗原应能引发催化
抗体,其结合位点可能会影响氮酰胺的变形以及杂环酰胺沿N–C(O)键的扭曲。该半抗原与一系列新的空间位阻不对称
次膦酸衍
生物是通过关键的
钯催化步骤制备的。