Add time:08/30/2019         Source:sciencedirect.com

Various thiated analogues of thymine 2′,3′-dideoxy-3′-fluoronucleoside (FLT) and their 5′-monophosphates and 5′-triphosphates were prepared with the use of modified multistep procedures. The thiated analogues of FLT and FLTMP were evaluated against the wild type and drug- and multidrug-resistant strains of HIV-1, using the replicative phenotyping format of the deCIPhR assay, and showed potent inhibition of drug-resistant HIV-1 strains at low cytotoxicity. Additionally, inhibition of recombinant drug resistant forms of reverse transcriptase from single and multiple HIV-1 mutants by the synthesized 5′-triphosphates was investigated. The strongest inhibition was observed for K103N and Δ67 mutants and the most potent anti-HIV-1 activity against drug resistant strains and the lowest cytotoxicity was exerted by S4FLTMP and FLTMP which may be regarded as potential anti-HIV/AIDS agents.

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