[EN] PROCESS FOR PREPARATION OF FAVIPIRAVIR<br/>[FR] PROCÉDÉ DE PRÉPARATION DE FAVIPIRAVIR
申请人:GLENMARK LIFE SCIENCES LTD
公开号:WO2021240295A1
公开(公告)日:2021-12-02
The present invention relates to a process for the preparation of favipiravir and salts thereof. The present invention also relates to salts of 6-fluoro-3-hydroxy-2-pyrazinecarbonitrile with inorganic base, process for their preparation and conversion thereof to favipiravir. The present invention also relates to salts of 6-bromo-3-hydroxypyrazine-2-carboxamide with organic and inorganic base and their use in the preparation of favipiravir.