通过将P-外消旋磷酰氯与受保护的核苷GS441524偶联,可以实现抗COVID-19药物瑞姆昔韦的催化不对称合成。所用的手性双环咪唑催化剂对于动态动力学不对称转化(DyKAT)以高反应活性和出色的立体选择性(96%转化率,22:1 S P:R P)顺利进行至关重要。)。机理研究表明,该DyKAT是取决于催化剂浓度的一级视觉动力学反应。外消旋化过程需要催化剂的独特手性双环咪唑骨架和氨基甲酸酯取代基,包括磷酰氯和随后的立体鉴别步骤。还进行了10克规模的反应,并获得了相当优异的结果,显示了其工业应用潜力。
Practical Remdesivir Synthesis through One-Pot Organocatalyzed Asymmetric (<i>S</i>)-P-Phosphoramidation
作者:Veeranjaneyulu Gannedi、Bharath Kumar Villuri、Sivakumar N. Reddy、Chiao-Chu Ku、Chi-Huey Wong、Shang-Cheng Hung
DOI:10.1021/acs.joc.0c02888
日期:2021.4.2
carbamate was utilized in the reaction at −20 °C. A 10-g scale one-potsynthesis via a combination of (S)-P-phosphoramidation and protecting group removal followed by one-step recrystallization gave remdesivir in 70% yield and 99.3/0.7 d.r. The organocatalyst was recovered in 83% yield for reuse, and similar results were obtained. This one-pot process offers an excellent opportunity for industrial production
[EN] CATALYSTS AND THEIR USES IN ONE-POT DIASTEREOSELECTIVE SYNTHESIS OF REMDESIVIR<br/>[FR] CATALYSEURS ET LEURS UTILISATIONS DANS LA SYNTHÈSE DIASTÉRÉOSÉLECTIVE EN ENCEINTE UNIQUE DE REMDÉSIVIR
申请人:ACADEMIA SINICA
公开号:WO2022076638A1
公开(公告)日:2022-04-14
Disclosed herein are novel catalysts for producing remdesivir in one-pot manner, in which a diastereomerically enriched form of an intermediate, which following acidic hydrolysis would give rise to the desired remdesivir, was produced with the aid of the disclosed novel catalysts. Also disclosed herein is an improved process for the preparation of remdesivir without the need to separate one of the enantiomers while minimizing the formation of undesired isomers, thus offers economic advantages for operation on a commercial scale.