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3'-Azido-3'-deoxythymidine (BW A509U): an antiviral agent that inhibits the infectivity and cytopathic effect of human T-lymphotropic virus type III/lymphadenopathy-associated virus in vitro.
The antiviral effects of a thymidine analogue,3'-azido-3'-deoxythymidine (BW A509U), which, as a triphosphate, inhibits the reverse transcriptase of HTLV-III/LAV, and the in vitro immune functions of normal T cells remain basically intact. Expand
Phosphorylation of 3'-azido-3'-deoxythymidine and selective interaction of the 5'-triphosphate with human immunodeficiency virus reverse transcriptase.
The results reported here suggest that azidothymidine is nonselectively phosphorylated but that the triphosphate derivative efficiently and selectively binds to the HIV reverse transcriptase. Expand
Selectivity of action of an antiherpetic agent, 9-(2-hydroxyethoxymethyl) guanine.
Acycloguanosine triphosphate inhibits herpes simplex virus DNA polymerase (DNA nucleotidyltransferase) 10-30 times more effectively than cellular (HeLa S3) DNA polymerases, contributing to the drug's selectivity. Expand
Genotype and Subtype Profiling of PSI-7977 as a Nucleotide Inhibitor of Hepatitis C Virus
Data from the JFH-1 replicon variants showed that amino acid changes within the finger and palm domains together with S282T were required to confer resistance to PSI-7977, while the mutations on the thumb domain serve to enhance the replication capacity of the S282 T replicons. Expand
Selective inhibition of human immunodeficiency viruses by racemates and enantiomers of cis-5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]cytosine
The results suggest that further development of the (-)-Beta-enantiomer of FTC is warranted as an antiviral agent for infections caused by human immunodeficiency viruses. Expand
Mechanism of Activation of PSI-7851 and Its Diastereoisomer PSI-7977
A phosphoramidate prodrug of 2′-deoxy-2′-α-fluoro-β-C-methyluridine-5′-monophosphate, PSI-7851, demonstrates potent anti-hepatitis C virus (HCV) activity both in vitro and in vivo. PSI-7851 is aExpand
Kinetics of Hepadnavirus Loss from the Liver during Inhibition of Viral DNA Synthesis
The loss of cccDNA was comparable to that expected from the estimated death rate of hepatocytes in these woodchucks, suggesting that death of infected cells was one of the major routes for elimination of cCCDNA. Expand
Thymidine kinase from herpes simplex virus phosphorylates the new antiviral compound, 9-(2-hydroxyethoxymethyl)guanine.
Low acyclo-Guo phosphorylating levels in cells infected with either of two herpes simplex virus mutants or with vaccinia virus correlated with low effectiveness of the compound against the virus in tissue culture. Expand
Discovery of a β-d-2'-deoxy-2'-α-fluoro-2'-β-C-methyluridine nucleotide prodrug (PSI-7977) for the treatment of hepatitis C virus.
Phosphoramidate prodrugs of the 5'-phosphate derivative of the β-d- 2'-deoxy-2'-α-fluoro-2-β-C-methyluridine nucleoside showed significant potency in the HCV subgenomic replicon assay and produced high levels of triphosphates 6 in primary hepatocytes and in the livers of rats, dogs, and monkeys when administered in vivo. Expand