Practical Access to Key Intermediates of Crizotinib, Lorlatinib, and Pibrentasvir Enabled by Oxa-Spirocyclic Ligands
作者:Jingyuan Song、Menglong Zhao、Renwei Xiao、Gen-Qiang Chen、Xumu Zhang
DOI:10.1021/acs.oprd.3c00089
日期:2023.12.15
Optically active secondary alcohols are key building blocks for a variety of chiral drugs, and transition-metal-catalyzed asymmetric hydrogenation represents one of the most efficient and direct methods for the preparation of chiral secondary alcohols. We herein report a practical and efficient asymmetric hydrogenation catalyzed by a chiral iridium complex bearing (R)-O-SpiroPAP as the ligand, producing
光学活性仲醇是多种手性药物的关键组成部分,过渡金属催化的不对称氢化是制备手性仲醇最有效、最直接的方法之一。我们在此报告了一种实用且有效的不对称氢化反应,由以 (R)-O-SpiroPAP 作为配体的手性铱配合物催化,产生克唑替尼、恩沙替尼、劳拉替尼和 pibrentasvir 中间体,产率高达 99%,ee 高达 99%和 >20:1 博士。当前催化系统的合成潜力通过克和公斤级的实验得到了证明。