Development of Two Synthetic Approaches to an APJ Receptor Agonist Containing a Tetra-<i>ortho-</i>Substituted Biaryl Pyridone
作者:Matthew J. Goldfogel、Christopher R. Jamison、Scott A. Savage、Matthew W. Haley、Subha Mukherjee、Chris Sfouggatakis、Manjunath Gujjar、Jayaraj Mohan、Souvik Rakshit、Rajappa Vaidyanathan
DOI:10.1021/acs.oprd.1c00088
日期:2022.3.18
reported. The first-generation synthesis of BMS-986224 relied on a key enamine cyclization to construct the pyridone core; however, the overall efficiency of this route was limited by the linear synthesis of the hindered biaryl pyridone. This lack of convergence is solved in a second-generation route that minimizes low-temperature lithiation chemistry, replaces costly Pd coupling with scalable nucleophilic
报道了两种方法合成的开发和实施,以提供BMS-986224,一种 APJ 受体的激动剂。BMS-986224的第一代合成依靠关键的烯胺环化构建吡啶酮核心;然而,该路线的整体效率受到受阻联芳基吡啶酮的线性合成的限制。这种缺乏收敛性在第二代路线中得到解决,该路线最大限度地减少低温锂化化学,用可扩展的亲核芳基化取代昂贵的 Pd 偶联,并减少步骤数。改进的合成是通过一种新的 Negishi 偶联方法实现的,该方法解决了 Suzuki-Miyaura 文献对四邻位取代的联芳基吡啶酮的限制。