Phthalimide derivatives as a new class of papain-like protease inhibitors in SARS-CoV-2.

Publication date: Dec 08, 2024

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) papain-like cysteine protease (PLpro) represents one of only two essential cysteine proteases involved in the regulation of viral replication. It, therefore, qualifies as a promising therapeutic target for the development of antiviral agents. We identified a previously synthesized protease inhibitor, resulting from an earlier project, as a PLpro inhibitor and crafted a structure-activity relationship around the hit, leading to the more potent inhibitors ZHAWOC6941 (17h) and ZHAWOC25153 (17o) displaying IC values of 8 and 7 uM, respectively. The two compounds represent a new class of PLpro inhibitors and, with single-digit micromolar IC values, are comparable to inhibitors found in the literature.

Concepts Keywords
Antiviral inhibitor
Class papain‐like protease
Coronavirus SARS‐CoV‐2
Pharm structure–activity relationship
Zhawoc6941

Semantics

Type Source Name
drug DRUGBANK Papain

Original Article

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