9-Fluorenone Sulfonamides: Dual Inhibitors of SARS-CoV-2 Proteases

Publication date: Sep 07, 2025

The synthetic process involved multiple steps, including the formation of sulfonamide linkages, which are crucial for enhancing the interaction of these compounds with the target proteases. 9-fluorenone-based synthetic sulfonamide compounds as dual inhibitors of SARS-CoV-2 Main-Protease and Papain-like Protease. Mol Divers (2025). A significant contribution to this area of research has come from a team led by Das et al. , who have synthesized a series of 9-fluorenone-based sulfonamide derivatives. Recent advancements in the fight against the COVID-19 pandemic have led to the exploration of various compounds with the potential to inhibit the viruss replication mechanisms. Animal models, as well as eventual clinical trials, will be essential in determining the safety, pharmacokinetics, and efficacy of the lead compounds in a biological context. The dual-action strategy, paired with the promising results from both experimental and computational studies, lays a strong foundation for future explorations in antiviral drug discovery. Meanwhile, PLpro plays a crucial role in the viral life cycle by removing ubiquitin and ISG15 from host proteins, allowing the virus to evade the hosts immune response.

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