Abstract: 2? and/or 3? prodrugs of 1?, 2?, 3? or 4?-branched nucleosides, and their pharmaceutically acceptable salts and derivatives are described. These prodrugs are useful in the prevention and treatment of Flaviviridae infections, including HCV infection, and other related conditions. Compounds and compositions of the prodrugs of the present invention are described. Methods and uses are also provided that include the administration of an effective amount of the prodrugs of the present invention, or their pharmaceutically acceptable salts or derivatives. These drugs may optionally be administered in combination or alteration with further anti-viral agents to prevent or treat Flaviviridae infections and other related conditions.

Abstract: A method and composition for treating a host infected with hepatitis C comprising administering an effective hepatitis C treatment amount of a described 1?, 2? or 3?-modified nucleoside or a pharmaceutically acceptable salt or prodrug thereof, is provided.

Abstract: The present invention discloses a method for the treatment of Flaviviridae infection that includes the administration of a 2?-branched nucleoside, or a pharmaceutically acceptable prodrug and/or salt thereof, to a human in need of therapy in combination or alternation with a drug that directly or indirectly induces a mutation in the viral genome at a location other than a mutation of a nucleotide that results in a change from serine to a different amino acid in the highly conserved consensus sequence, XRXSGXXXT (SEQ ID NO: 63), of domain B of the RNA polymerase region, or is associated with such a mutation. The invention also includes a method to detect a mutant strain of Flaviviridae and a method for its treatment.

Abstract: A method and composition for treating a host infected with hepatitis C comprising administering an effective hepatitis C treatment amount of a described 1?, 2? or 3?-modified nucleoside or a pharmaceutically acceptable salt or prodrug thereof, is provided.

Abstract: A method and composition for treating a host infected with hepatitis C comprising administering an effective hepatitis C treatment amount of a described 1?, 2? or 3?-modified nucleoside or a pharmaceutically acceptable salt or prodrug thereof, is provided.

Abstract: 2? and/or 3? prodrugs of 1?, 2?, 3? or 4?-branchednucleosides, and their pharmaceutically acceptable salts and derivatives are described. These prodrugs are useful in the prevention and treatment of Flaviviridae infections, including HCV infection, and other related conditions. Compounds and compositions of the prodrugs of the present invention are described. Methods and uses are also provided that include the administration of an effective amount of the prodrugs of the present invention, or their pharmaceutically acceptable salts or derivatives. These drugs may optionally be administered in combination or alteration with further anti-viral agents to prevent or treat Flaviviridae infections and other related conditions.

Abstract: A method and composition for treating a host infected with flavivirus or pestivirus comprising administering an effective flavivirus or pestivirus treatment amount of a described 1?, 2? or 3?-modified nucleoside or a pharmaceutically acceptable salt or prodrug thereof, is provided.

Abstract: The present invention discloses methods to diagnose and/or to make prognostic predictions and/or to monitor the efficacy of a therapy of a proliferative or conformational disease, or to establish the state of ageing in a subject. Kit for performing such methods are also disclosed.

Abstract: This invention is directed to a method for treating a host, especially a human, infected with hepatitis C, flavivirus and/or pestivirus, comprising administering to that host an effective amount of an anti-flavivirus or anti-pestivirus, biologically active compound has a 5-aza-7-deazapurine moiety. The 5-aza-7-deazapurine moiety may be substituted or unsubstituted, and may comprise a nucleoside analogue, or a salt or prodrug thereof. The compound of the present invention may be administered alone or in combination with another anti-hepatitis C, anti-flavivirus and/or anti-pestivirus agent.

Abstract: Oxo-pyrimidine compounds for the treatment of retroviral infections, and particularly for HIV, are described. Also included are compositions comprising the oxo-pyrimidine derivatives alone or in combination with other anti-retroviral agents, processes for their preparation, and methods of manufacturing a medicament incorporating these compounds.

Abstract: The invention concerns novel substituted 6-benzyl-4-oxopyrimnidines of general formula (A). These compounds inhibit reverse transcriptase encoded by human immunodeficiency virus (HIV) or pharmaceutically acceptable salts thereof, and find their application in the prevention and treatment of HIV infection and the treatment of the resulting acquired immune deficiency syndrome (AIDS). Pharmaceutical compositions containing the compounds and a method of use of the present compounds and other agents for the treatment of AIDS and viral infection by HIV are also envisaged.

Abstract: A method for inhibiting sexual transmission of HIV comprising topically applying to the skin or epithelial tissue of a human a composition comprising a non-nucleoside reverse transcriptase inhibitor (“NNRTI”) that is able to inhibit viral replication for periods exceeding 12, 24, or even 36 days, at concentrations below even 10 &mgr;M. In one embodiment the NNRTI is a dihydro-alkyloxy-benzyl-oxopyrimidine (DABO).

Abstract: The invention concerns novel substituted 6-benzyl-4-oxopyrimidines and pharmaceutically acceptable salts thereof. These compounds inhibit reverse transcriptase encoded by human immunodeficiency virus (HIV), and are useful to prevent and treat HIV infection and acquired immune deficiency syndrome (AIDS). Pharmaceutical compositions containing the compounds and a method of use of the present compounds and other agents for the treatment of AIDS and viral infection by HIV are also envisaged.

Abstract: A method for inhibiting sexual transmission of HIV comprising topically applying to the skin or epithelial tissue of a human a composition comprising a non-nucleoside reverse transcriptase inhibitor (“NNRTI”) that is able to inhibit viral replication for periods exceeding 12, 24, or even 36 days, at concentrations below even 10 &mgr;M. In one embodiment the NNRTI is a dihydro-alkyloxy-benzyl-oxopyrimidine (DABO).

Abstract: A method for inhibiting sexual transmission of HIV comprising topically applying to the skin or epithelial tissue of a human a composition comprising a non-nucleoside reverse transcriptase inhibitor (“NNRTI”) that is able to inhibit viral replication for periods exceeding 12, 24, or even 36 days, at concentrations below even 10 &mgr;M. In one embodiment the NNRTI is a dihydro-alkyloxy-benzyl-oxopyrimidine (DABO).