Stereoselective Synthesis of Sofosbuvir through Nucleoside Phosphorylation Controlled by Kinetic Resolution
作者:Elena Cini、Giuseppe Barreca、Luca Carcone、Fabrizio Manetti、Marcello Rasparini、Maurizio Taddei
DOI:10.1002/ejoc.201800158
日期:2018.6.7
recent Hepatitis C (HCV) infection therapies, is reported. The process is based on the dynamic kinetic resolution of the stereochemically unstable isopropyl‐2‐[chloro(phenoxy)phosphoryl]‐amino}propanoate (8). A high stereoselectivity was obtained when the right protective group for 3′‐OH was chosen. Ester and carbonate‐based protective groups gave lower stereoselectivities, but benzyl protection allowed
据报道,Sofosbuvir的制备是最近的丙型肝炎(HCV)感染疗法的重要关键成分。该过程基于立体化学不稳定的异丙基-2--2-[[氯(苯氧基)磷酰基]-氨基}丙酸异丙酯的动态动力学解析(8)。选择正确的3'-OH保护基时,可以获得很高的立体选择性。酯基和碳酸酯基保护基的立体选择性较低,但是苄基保护基使磷酸化反应以92:8的比例发生,有利于在P-stereogenic中心具有正确构型的产物。从2-脱氧-2-氟-2-甲基戊酸的γ-内酯开始,使用市售试剂,无需任何酶促或化学拆分技术,即可以八步完成合成,总产率为40%。