An economical and practical procedure of favipiravir synthesis for the treatment of Covid-19.
Chem Zvesti
; : 1-8, 2022 Nov 21.
Article
in English
| MEDLINE | ID: covidwho-2265565
ABSTRACT
Favipiravir is a wide-spectrum antiviral generic drug that has received large attention during the recent COVID-19 pandemic. While there are synthetic strategies for favipiravir synthesis, economical procedures could contribute to industrial scale synthesis and availability. Accordingly, our efforts focused on an economic and scalable procedure for favipiravir synthesis via the 3,6-dichloropyrazine-2-carbonitrile intermediate obtained from 3-aminopyrazine-2-carboxylic acid. The process afforded favipiravir with 43% yield (from 3,6-dichloropyrazine-2-carbonitrile, by fluorination, hydroxylation, and nitrile hydrolysis reactions) and greater than 99% purity without a chromatographic purification step. Supplementary Information The online version contains supplementary material available at 10.1007/s11696-022-02595-1.
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Database:
MEDLINE
Language:
English
Journal:
Chem Zvesti
Year:
2022
Document Type:
Article
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