Propargyl-Assisted Selective Amidation Applied in C-terminal Glycine Peptide Conjugation
作者:Kenward King Ho Vong、Satoshi Maeda、Katsunori Tanaka
DOI:10.1002/chem.201604247
日期:2016.12.23
nucleophilic acyl substitution reactions. Herein, we report an unusual observation in which glycine propargyl ester derivatives displayed selective, base‐independent reactivity towards linear alkylamines under mild, metal‐free conditions. Through global reaction route mapping (GRRM) modeling calculations, it is predicted that these observations may be governed by factors related to hydrogen‐bonding and intermolecular
烷基酯(例如炔丙基酯)通常缺乏参与亲核酰基取代反应所需的吸电子诱导效应。在此,我们报告了一个不寻常的观察结果,其中甘氨酸炔丙基酯衍生物在温和,无金属的条件下对线性烷基胺表现出选择性的,与碱无关的反应性。通过整体反应路线图(GRRM)建模计算,可以预测这些观察结果可能受与氢键和分子间相互作用相关的因素的支配,而不是由吸电子的感应效应支配。基于炔丙基辅助选择性酰胺化的概念,直接开发了一种新的位点特异性C末端甘氨酸肽生物缀合技术作为概念验证,