Identification, synthesis, characterization, and a quality control strategy for high-risk chiral impurities in the antifungal drug substance posaconazole
作者:Bin Hu、Zhiliang Lv、Guiliang Chen、Jianzhong Lu
DOI:10.1016/j.tet.2022.133098
日期:2022.11
The four chiral centres in posaconazole (POS) result in as many as 16 chiral isomers. Controlling all the chiral impurities in POS is a challenging task. In this study, three high-risk chiral impurities were identified and synthesized, and the corresponding chemical structures were characterized. Three single crystals were obtained and analyzed to support the absolute configuration elucidation. Based
泊沙康唑 (POS) 中的四个手性中心导致多达 16 个手性异构体。控制 POS 中的所有手性杂质是一项具有挑战性的任务。本研究鉴定并合成了三种高风险手性杂质,并对其化学结构进行了表征。获得并分析了三个单晶以支持绝对构型阐明。根据手性杂质的成因机制,优化合成工艺,建立合适的控制策略和控制空间,合理控制POS手性杂质,使控制方法更简单、更有效。