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Anti-Human Immunodeficiency Virus Activity, Cross-Resistance, Cytotoxicity, and Intracellular Pharmacology of the 3′-Azido-2′,3′-Dideoxypurine Nucleosides
ABSTRACT Although the approved nucleoside reverse transcriptase (RT) inhibitors (NRTI) are integral components of therapy for human immunodeficiency virus type 1 (HIV-1) infection, they can haveExpand
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Inhibition of Hepatitis C Replicon RNA Synthesis by β-D-2′-deoxy-2′-fluoro-2′-C-Methylcytidine: A Specific Inhibitor of Hepatitis C Virus Replication
β-D-2′-Deoxy-2′-fluoro-2′-C-methylcytidine (PSI-6130) is a cytidine analogue with potent and selective anti-hepatitis C virus (HCV) activity in the subgenomic HCV replicon assay, 90% effectiveExpand
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Combinations of 2'-C-Methylcytidine Analogues with Interferon-α2b and Triple Combination with Ribavirin in the Hepatitis C Virus Replicon System
Background: Hepatitis C virus (HCV) polymerase is an essential enzyme for HCV replication and has multiple inhibitor binding sites making it a major target for antiviral intervention. It is apparentExpand
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Anti-hepatitis C Virus Activity of Novel β-D-2′-C-methyl-4′-azido Pyrimidine Nucleoside Phosphoramidate Prodrugs
Background: 2′-C-methyl and 4′-azido nucleosides have previously demonstrated inhibition of hepatitis C virus (HCV) replication by targeting the RNA-dependent RNA polymerase NS5B. In an effort toExpand
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Antiviral Activities and Cellular Toxicities of Modified 2′,3′-Dideoxy-2′,3′-Didehydrocytidine Analogues
ABSTRACT The antiviral efficacies and cytotoxicities of 2′,3′- and 4′-substituted 2′,3′-didehydro-2′,3′-dideoxycytidine analogs were evaluated. All compounds were tested (i) against a wild-type humanExpand
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5'-O-Aliphatic and amino acid ester prodrugs of (-)-beta-D-(2R,4R)-dioxolane-thymine (DOT): synthesis, anti-HIV activity, cytotoxicity and stability studies.
A series of (-)-beta-D-(2R,4R)-dioxolane-thymine-5'-O-aliphatic acid esters as well as amino acid esters were synthesized as prodrugs of (-)-beta-D-(2R,4R)-dioxolane-thymine (DOT). The compounds wereExpand
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Antiviral and Cellular Metabolism Interactions between Dexelvucitabine and Lamivudine
ABSTRACT Studies on cellular drug interactions with antiretroviral agents prior to clinical trials are critical to detect possible drug interactions. Herein, we demonstrated that two 2′-deoxycytidineExpand
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Emergence of a Novel Mutation in the FLLA Region of Hepatitis B Virus during Lamivudine Therapy
ABSTRACT The emergence of resistance to lamivudine has been one of the major stumbling blocks to successful treatment and control of hepatitis B virus (HBV) infections. The major mechanism ofExpand
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Pharmacology and Pharmacokinetics of the Antiviral Agent β-d-2′,3′-Dideoxy-3′-Oxa-5-Fluorocytidine in Cells and Rhesus Monkeys
ABSTRACT β-d-2′,3′-Dideoxy-3′-oxa-5-fluorocytidine (d-FDOC) is an effective inhibitor of human immunodeficiency virus 1 (HIV-1) and HIV-2, simian immunodeficiency virus, and hepatitis B virus (HBV)Expand
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N4-Acyl-Modified D-2′,3′-Dideoxy-5-Fluorocytidine Nucleoside Analogues with Improved Antiviral Activity
A series of 2,3-dideoxy (D2) and 2,3-didehydro-2,3-dideoxy (D4) 5-fluorocytosine nucleosides modified with substituted benzoyl, heteroaromatic carbonyl, cycloalkylcarbonyl and alkanoyl at theExpand
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