Abstract: A class of 2?-fluoro-nucleoside compounds are disclosed which are useful in the treatment of hepatitis B infection, hepatitis C infection, HIV and abnormal cellular proliferation, including tumors and cancer.

Abstract: The present invention relates to novel compounds, compositions and methods for inhibiting the growth, elaboration and/or replication of HIV in human patients and to the prevention and treatment of human acquired immunodeficiency syndrome (AIDS) and other diseases caused by retroviral infection. More particularly, in preferred aspects, the present invention provides a method for the use of novel prodrug forms of 9-(2,3-Dideoxy-?-D-glycero-pent-2-enofuranosyl) guanine (d4G) for the prevention and treatment of both wild type and drug-resistant Human Immunodeficiency Virus (HIV), the causative pathogen of AIDS. Compounds according to the present invention are based upon the chemical formula: where X is OCH3, N3, NHCH3, N(CH3)2 or an aminocyclopropyl group; R1 is H or a C1 to C20 acyl or ether group, a phosphate, diphosphate, triphosphate or phosphodiester group; and R2 is H or a C1 to C20 acyl or alkyl group.

Abstract: The present invention relates to a novel and improved process for preparing 2?-fluoro-5-methyl-?-L-arabinofuranosyluridine represented by formula (1) which shows anti-viral activity, especially potent anti-viral activity against hepatitis B-virus and Epstein-Barr virus:

Abstract: A class of 2′-fluoro-nucleoside compounds are disclosed which are useful in the treatment of hepatitis B infection, hepatitis C infection, HIV and abnormal cellular proliferation, including tumors and cancer.

Abstract: The present invention relates to 3′ substituted-2′, 3′-didehydro-2′, 3′-dideoxy-&bgr;-L-nucleosides and their pharmaceutically acceptable salts and prodrugs thereof, for the treatment of infectious viral diseases, in general, particularly HBV and HIV viral infections and more particularly, HBV and HIV viral infections that are resistant to other antiviral drugs.

Abstract: The present invention relates to pyrimidine nucleoside compounds and their use to treat viral infections of Varicella Zoster Virus, Epstein Barr Virus and Kaposi's Sarcoma virus, also known as HV-8 and related complications of these viral infections. In another aspect of the present invention, the use of one or more nucleoside compound to increase the retention or half-life of 5-fluorouracil (FU) in patients is also described.

Abstract: A method for the treatment for hepatitis delta infection in a host, that includes administering an effective amount of a nucleoside or a nucleoside analog that suppresses the expression of the hepatitis B surface or preS1 antigen in the host 100-fold or more relative to pretreatment values in vivo; or to not more than 1 microgram per milliliter in vivo. In a preferred embodiment, the nucleoside is L-FMAU, or a pharmaceutically acceptable salt or prodrug thereof.

Abstract: The present invention relates to pyrimidine nucleoside compounds and their use to treat viral infections of Varicella Zoster virus and Epstein Barr Virus, as well as cancers which are complications of Epstein Barr virus.

Abstract: A method for the treatment for hepatitis delta infection in a host, that includes administering an effective amount of a nucleoside or a nucleoside analog that suppresses the expression of the hepatitis B surface or preS1 antigen in the host 100-fold or more relative to pretreatment values in vivo; or to not more than 1 microgram per milliliter in vivo. In a preferred embodiment, the nucleoside is L-FMAU, or a pharmaceutically acceptable salt or prodrug thereof.

Abstract: The present invention relates to a novel and improved process for preparing 2′-fluoro-5-methyl-&bgr;-L-arabinofuranosyluridine represented by formula (1) which shows anti-viral activity, especially potent anti-viral activity against hepatitis B-virus and Epstein-Barr virus: 1

Abstract: A method and composition for the treatment of HIV infection, HBV infection, or abnormal cellular proliferation in humans and other host animals is disclosed that includes the administration of an effective amount of a 1,3-oxaselenolane nucleoside or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable carrier.

Abstract: The present invention relates to a novel and improved process for preparing 2′-fluoro-5-methyl-&bgr;-L-arabinofuranosyluridine represented by formula (I) which shows anti-viral activity, especially potent anti-viral activity against hepatitis B-virus and Epstein-Barr virus:

Abstract: The present invention relates to novel compounds, compositions and methods for inhibiting the growth, elaboration and/or replication of HIV in human patients and to the prevention and treatment of human acquired immunodeficiency syndrome (AIDS) and other diseases caused by retroviral infection. More particularly, in preferred aspects, the present invention provides a method for the use of novel prodrug forms of 9-(2,3-Dideoxy-&bgr;-D-glycero-pent-2-enofuranosyl)guanine (d4G) for the prevention and treatment of both wild type and drug-resistant Human Immunodeficiency Virus (HIV), the causative pathogen of AIDS.

Abstract: A class of 2′-fluoro-nucleoside compounds are disclosed which are useful in the treatment of hepatitis B infection, hepatitis C infection, HIV and abnormal cellular proliferation, including tumors and cancer.

Abstract: A method for the treatment for hepatitis delta infection in a host, that includes administering an effective amount of a nucleoside or a nucleoside analog that suppresses the expression of the hepatitis B surface or preS1 antigen in the host 100-fold or more relative to pretreatment values in vivo; or to not more than 1 microgram per milliliter in vivo. In a preferred embodiment, the nucleoside is L-FMAU, or a pharmaceutically acceptable salt or prodrug thereof.

Abstract: The present invention relates to the use of prodrug forms of (−)-(2S,4S)-1-(2-hydroxymethyl-1,3-dioxolan-4-yl)cytosine to treat psoriasis, genital warts and other hyperproliferative keratinocyte diseases such as hyperkeratosis, ichthyosis, keratoderma or lichen planus.

Abstract: The present invention relates to a novel and improved process for preparing 2′-fluoro-5-methyl-&bgr;-L-arabinofuranosyluridine represented by formula (1) which shows anti-viral activity, especially potent anti-viral activity against hepatitis B-virus and Epstein-Barr virus: 1

Abstract: A class of 2′-fluoro-nucleoside compounds are disclosed which are useful in the treatment of hepatitis B infection, hepatitis C infection, HIV and abnormal cellular proliferation, including tumors and cancer.

Abstract: Pharmaceutical prodrug compositions are provided comprising azide derivatives of drugs which are capable of being converted to the drug in vivo. Azide derivatives of drugs having amine, ketone and hydroxy substituents are converted in vivo to the corresponding drugs, increasing the half-life of the drugs. In addition azide prodrugs are often better able to penetrate the blood-brain barrier than the corresponding drugs. Especially useful are azide derivatives of cordycepin, 2′-F-ara-ddI, AraA, acyclovir, penciclovir and related drugs. Useful azide prodrugs are azide derivatives of therapeutic alicyclic amines, ketones, and hydroxy-substituted compounds, including aralkyl, heterocyclic aralkyl, and cyclic aliphatic compounds, where the amine or oxygen moiety is on the ring, or where the amine or oxygen moiety is on an aliphatic side chain, as well as therapeutic purines and pyrimidines, nucleoside analogs and phosphorylated nucleoside analogs.

Abstract: The present invention relates to the discovery that certain P-L-dioxolane nucleoside analogs which contain a uracil base, and preferably, a 5-halosubstituted uracil base, exhibit unexpectedly high activity against Epstein-Barr virus (EBV), Varciella-Zoster virus (VZV) and Herpes Virus 8 (HV-8). In particular, the compounds according to the present invention show potent inhibition of the replication of the virus (viral growth) in combination with very low toxicity to the host cells (i.e., animal or human tissue). Compounds are useful for treating EBV, VZV and HV-8 infections in humans.