Kobayashi T, Yasuno T, Takahashi K, Nakamura S, Mashino T, Ohe T. Novel pyridinium-type fullerene derivatives as multitargeting inhibitors of HIV-1 reverse transcriptase, HIV-1 protease, and HCV NS5B polymerase.
Bioorg Med Chem Lett 2021;
49:128267. [PMID:
34271071 DOI:
10.1016/j.bmcl.2021.128267]
[Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/05/2021] [Accepted: 07/11/2021] [Indexed: 11/26/2022]
Abstract
In the present study, we newly synthesized four types of novel fullerene derivatives: pyridinium/ethyl ester-type derivatives 3b-3l, pyridinium/carboxylic acid-type derivatives 4a, 4e, 4f, pyridinium/amide-type derivative 5a, and pyridinium/2-morpholinone-type derivative 6a. Among the assessed compounds, cis-3c, cis-3d, trans-3e, trans-3h, cis-3l, cis-4e, cis-4f, trans-4f, and cis-5a were found to inhibit HIV-1 reverse transcriptase (HIV-RT), HIV-1 protease (HIV-PR), and HCV NS5B polymerase (HCV NS5B), with IC50 values observed in the micromolar range. Cellular uptake of pyridinium/ethyl ester-type derivatives was higher than that of corresponding pyridinium/carboxylic acid-type derivatives and pyridinium/amide-type derivatives. This result might indicate that pyridinium/ethyl ester-type derivatives are expected to be lead compounds for multitargeting drugs to treat HIV/HCV coinfection.
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