Abstract: Provided herein are compounds, compositions and methods for the treatment of Flaviviridae infections, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents.

Abstract: Provided herein are compounds, compositions and methods for the treatment of liver cancer such as hepatocellular carcinoma, cholangiocarcinoma, or biliary tract cancer. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-cancer agents. In certain embodiments, the compounds are nucleoside analogs of Formula I: (I); or a pharmaceutically acceptable salt thereof, wherein Base, Z1, Z2, Z3, Z4, V, W, X, Ar, R1 and R2 are as described herein.

Abstract: Provided herein are compounds, compositions and methods for the treatment of Flaviviridae infections, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents. In certain embodiments, the compounds are nucleoside analogs of Formula I: or a pharmaceutically acceptable salt, solvate, stereoisomeric form, tautomeric form or polymorphic form thereof, wherein Base, Z1 Z2, Z3, Z4, V, W, X, Y, Ar, R1 and R2 are as described herein.

Abstract: Provided herein are compounds, compositions and methods for the treatment of liver disorders, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents. In certain embodiments, provided herein are compounds according to Formula I: or a pharmaceutically acceptable salt, solvate, tautomeric or polymorphic form thereof.

Abstract: Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula I, and pharmaceutical compositions and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.

Abstract: Provided herein are compounds, compositions and methods for the treatment of Flaviviridae infections, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents. In certain embodiments, the compounds are 3?-deoxy nucleoside compounds according to Formula 3001a or 3001b: or a pharmaceutically acceptable salts, solvates, stereoisomeric forms, tautomeric forms, or polymorphic forms thereof, wherein PD, Base1 and Base2 are as provided herein.

Abstract: Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula Ia or Ib, pharmaceutical compositions comprising the compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.

Abstract: Provided herein are compounds, compositions and methods for the treatment of liver disorder, including HCV and/or HBV infections. Specifically, compound and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents.

Abstract: Provided herein are compounds, compositions and methods for the treatment of liver disorders, including HCV infections. In one embodiment, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents.

Abstract: Provided herein are compounds, compositions and methods for the treatment of Flaviviridae infections, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents. In certain embodiments, the compounds are according to Formula 1501: or a pharmaceutically acceptable salt, solvate, stereoisomeric form, tautomeric form or polymorphic form thereof, wherein B, PD, RA, RB, RC, L, M and Z are as described herein.

Abstract: Provided herein are compounds, compositions and methods for the treatment of Flaviviridae infections, including HCV infections. In certain embodiments, compounds and compositions of nucleoside derivatives are disclosed, which can be administered either alone or in combination with other anti-viral agents. In certain embodiments, provided herein are compounds according to Formula 1001: or a pharmaceutically acceptable salt, solvate, stereoisomeric form, tautomeric form or polymorphic form thereof, wherein Base, Y, Z, A, RC and RD are as described herein.

Abstract: Provided herein are compounds, methods and pharmaceutical compositions for use in treatment of viral infections, including hepatitis C virus (HCV) infections, in hosts in need thereof. In certain embodiments, the compounds are 2?,4?-fluoro nucleosides according to Formula 1001: or a pharmaceutically acceptable salt, solvate, stereoisomeric form, tautomeric form, or polymorphic form thereof, wherein Base, RA, and PD are as described herein. In certain embodiments, 2?,4?-fluoro nucleosides are provided which display remarkable efficacy and bioavailability for the treatment of, for example, HCV infection in a human.

Abstract: Provided herein are 5,5-fused heteroarylene hepatitis C virus inhibitor compounds, for example, of Formula I, IA, or IB, pharmaceutical compositions comprising the compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.

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-HCV biologically active pentofuranonucleoside where the pentofuranonucleoside base is an optionally substituted 2-azapurine. The optionally substituted pentofuranonucleoside, or a salt or prodrug thereof, may be administered alone or in combination with one or more optionally substituted pentofuranonucleosides or other anti-viral agents.