Martinez-Gualda B, Pu SY, Froeyen M, Herdewijn P, Einav S, De Jonghe S. Structure-activity relationship study of the pyridine moiety of isothiazolo[4,3-b]pyridines as antiviral agents targeting cyclin G-associated kinase.
Bioorg Med Chem 2019;
28:115188. [PMID:
31757682 DOI:
10.1016/j.bmc.2019.115188]
[Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/21/2019] [Accepted: 10/25/2019] [Indexed: 11/26/2022]
Abstract
Previously, we reported the discovery of 3,6-disubstituted isothiazolo[4,3-b]pyridines as potent and selective cyclin G-associated kinase (GAK) inhibitors with promising antiviral activity. In this manuscript, the structure-activity relationship study was expanded to synthesis of isothiazolo[4,3-b]pyridines with modifications of the pyridine moiety. This effort led to the discovery of an isothiazolo[4,3-b]pyridine derivative with a 3,4-dimethoxyphenyl residue at position 5 that displayed low nanomolar GAK binding affinity and antiviral activity against dengue virus.
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