Structure Activity of β-Amidomethyl Vinyl Sulfones as Covalent Inhibitors of <i>Chikungunya</i> nsP2 Cysteine Protease with Antialphavirus Activity.

ABSTRACT: Despite their widespread impact on human health, there are no approved drugs for combating alphavirus infections. The heterocyclic β-aminomethyl vinyl sulfone RA-0002034 (1a) is a potent irreversible covalent inhibitor of the alphavirus nsP2 cysteine protease with broad-spectrum antiviral activity. Analogs of 1a that varied each of the three regions of the molecule were synthesized to establish structure-activity relationships for the inhibition of Chikungunya (CHIKV) nsP2 protease and viral replication. The vinyl sulfone covalent warhead was highly sensitive to modifications. However, alterations to the core five-membered heterocycle and aryl substituent were well tolerated. The 5-(2,5-dimethoxyphenyl)pyrazole (1o) and 4-cyanopyrazole (8d) analogs exhibi

SUBMITTER: Ghoshal A 

PROVIDER: S-EPMC11440497 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature