[EN] A PROCESS FOR PREPARING NAVAFENTEROL AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE NAVAFENTÉROL ET DE SES INTERMÉDIAIRES
申请人:GBR LABORATORIES PRIVATE LTD
公开号:WO2022172296A1
公开(公告)日:2022-08-18
The present invention relates to a process for preparation of Navafenterol of Formula (I) and intermediate compounds of Formula (VII) and Formula (XIII) by chiral sulfide mediated epoxidation. The process involves preparation of the intermediate compounds of Formula (VII) and Formula (XIII) followed by preparation of Navafenterol from the compound of Formula (XIII) either by condensation with the compound of Formula (XVI); or via intermediates of the compound of Formula (XVIII) and compound of Formula (XV); or via intermediates of the compound of Formula (XI-a) and compound of Formula (XVI). The process uses simple raw materials and reagents. Further, the process is cost effective and gives higher yield and better purity.
本发明涉及一种通过手性硫化物介导的环氧化反应制备Navafenterol(式(I))及其中间化合物(式(VII)和式(XIII))的方法。该方法包括制备式(VII)和式(XIII)的中间体,然后通过与式(XVI)的缩合或通过式(XVIII)的中间体和式(XV)的化合物,或通过式(XI-a)和式(XVI)的中间体来制备Navafenterol。该方法使用简单的原材料和试剂。此外,该方法成本效益高,产量高,纯度更好。