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Toward a Practical, Nonenzymatic Process for Investigational COVID-19 Antiviral Molnupiravir from Cytidine: Supply-Centered Synthesis.

Vijayagopal GopalsamuthiramAppasaheb L KadamJeffrey K NobleDavid R SneadCorshai WilliamsTimothy F JamisonChris SenanayakeAjay K YadawSarabindu RoyGopal SirasaniB Frank GuptonJustina BurnsDaniel W CookRodger W StringhamSaeed AhmadRudy Krack
Published in: Organic process research & development (2021)
A scalable four-step synthesis of molnupiravir from cytidine is described herein. The attractiveness of this approach is its fully chemical nature involving inexpensive reagents and more environmentally friendly solvents such as water, isopropanol, acetonitrile, and acetone. Isolation and purification procedures are improved in comparison to our earlier study as all intermediates can be isolated via recrystallization. The key steps in the synthesis, namely, ester formation, hydroxyamination, and deprotection were carried out on a multigram scale to afford molnupiravir in 36-41% yield with an average purity of 98 wt % by qNMR and 99 area% by HPLC.
Keyphrases
  • coronavirus disease
  • sars cov
  • ms ms
  • randomized controlled trial
  • simultaneous determination
  • clinical trial
  • open label
  • solid phase extraction