53 results about "Family Flaviviridae" patented technology

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.

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 seine to a different amino acid in the highly conserved consensus sequence, XRXSGXXXT (Sequence 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.

The disclosed invention is a bicyclo[4.2.1]nonane and its pharmaceutically acceptable salt or prodrug, and its composition and method of use to treat Flaviviridae (Hepacivirus, Flavivirus, and Pestivirus) infections in a host, including animals, and especially humans.

Imino sugars, such as deoxynojirimycin (DNJ), are glucose analogues that selectively inhibit cellular α-glucosidase I and II (enzymes that process N-linked glycans in glycoprotein) and exhibit broad spectrum antiviral activities against many enveloped viruses. Previously we have reported a novel DNJ derivative, OSL-95II, with antiviral activity and reduced cytotoxicity. In order to develop imino sugars with more potent antiviral activity as well as improved toxicity profile, OSL-95II was modified by diversifying the nitrogen linked alkylated side chain. The antiviral activities were initially tested in bovine viral diarrhea virus (BVDV) infected MDBK cells, yielding several imino sugar derivatives with novel structure and superior antiviral activity and toxicity profile. Furthermore, these new compounds were shown to be active against Dengue virus (DV) and West Nile virus (WNV) infection in BHK cells where potent anti-DV activity having submicromolar EC50 values and SI of greater than 900. These compounds represent a new generation of iminio sugars and their analogues, having application in the clinical treatment of infection of DV and other members of flaviviridae.

Disclosed are 6-hydroxyamino- or a 6-alkoxyamino-7-deazapurine-ribofuranose derivatives, salts, pharmaceutical compositions, and methods of use thereof for treating viral infections caused by a flaviviridae family virus, such as hepatitis C virus.

Disclosed are compounds, stereoisomers, tautomers, pharmaceutically acceptable salts, or prodrugs thereof of having Formula (I), their preparation, use, and compositions thereof for treating an infection mediated at least in part by a virus in the Flaviviridae family of viruses, wherein A, L1, V, W, T, Z, R, Y1, and p are as defined herein.

The disclosed invention is a bicyclo[4.2.1]nonane and its pharmaceutically acceptable salt or prodrug, and its composition and method of use to treat Flaviviridae (Hepacivirus, Flavivirus, and Pestivirus) infections in a host, including animals, and especially humans.

Disclosed are compounds, compositions and methods for treating viral infections caused by a flaviviridae family virus, such as hepatitis C virus.

Disclosed are compounds having Formula (I) and the compositions and methods relating to these compounds, for treating or preventing a viral infection mediated at least in part by a virus in the Flaviviridae family of viruses, wherein A, R2, m, R, V, W, T, Z, R1, Y, and p are disclosed herein.

Provided are compounds of Formula I:and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of Flaviviridae virus infections, particularly hepatitis C infections.

2-amino-pyrido(3,2-d)pyrimidine derivatives with a specific substitution pattern on positions 4 and 6 of the core structure are useful in the treatment or prevention of an infection due to a virus from the Flaviviridae family, especially HCV, when administered to a patient in a therapeutically effective amount.

The invention provides methods and compositions for identifying agents for treating infection by viruses that encode a nucleotide-binding NS4B protein, or functional equivalent thereof, e.g., hepatitis C virus (HCV) or other members of the family Flaviviridae. In general, the methods involve contacting an NS4B nucleotide binding motif (NBM)-containing polypeptide with a candidate agent, and determining the effect of the candidate agent on nucleotide binding activity, a nucleotide hydrolyzing activity, or a nucleotide-dependent RNA binding activity of the polypeptide. A candidate agent that inhibits NS4B polypeptide binding to a nucleotide is an anti-viral agent, e.g., an anti-HCV agent. The invention also features a polynucleotide encoding a NS4B polypeptide having a modified NBM (e.g., which is impaired in NTP binding). The subject methods and compositions find use in a variety of therapeutic and screening applications.

Disclosed are compounds and compositions of Formula (I), pharmaceutically acceptable salts and solvates thereof, and their preparation and uses for treating viral infections mediated at least in part by a virus in the Flaviviridae family of viruses.

Provided are compounds of Formula I: and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of Flaviviridae virus infections, particularly hepatitis C infections.

The present invention relates to a series of novel compounds, methods to prevent or treat viral infections in animals by using the novel compounds and to said novel compounds for use as a medicine, more preferably for use as a medicine to treat or prevent viral infections, particularly infections with RNA viruses, more particularly infections with viruses belonging to the family of the Flaviviridae, and yet more particularly infections with the Dengue virus. The present invention furthermore relates to pharmaceutical compositions or combination preparations of the novel compounds, to the compositions or preparations for use as a medicine, more preferably for the prevention or treatment of viral infections. The invention also relates to processes for preparation of the compounds.

Provided are compounds of Formula I:and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of Flaviviridae virus infections, particularly hepatitis C infections.

An anti-viral compounds effective against viruses belonging to the Flaviviridae family, wherein the anti-viral compounds are 1,5-dideoxy-1,5-imino-D-glucitol derivative compounds having the general formula (I)wherein R2, R3, R4 and R5 are the same or different and are selected from the group consisting of hydrogen, acyl, benzyl, alkyl, aryl, sulfonyl, phosphonyl, silyl, R6 is at least one of alkyl or branched alkyl, heteroalkyl or aryl, R6′ is a bridging group selected from at least one of bicycle[2.2.1]heptyl, bicycle[3.2.1]octyl, oxa analogs, admonyl and cubyl, n′=2-10, n″=1-10, enantiomers and stereoisomers of said compounds and physiologically acceptable salts or solvates of said compounds, enantiomer or stereoisomer.

2-amino-pyrido(3,2-d)pyrimidine derivatives with a specific substitution pattern on positions 4 and 6 of the core structure are useful in the treatment or prevention of an infection due to a virus from the Flaviviridae family, especially HCV, when administered to a patient in a therapeutically effective amount.

This invention is directed to compounds of Formula (I) having the structure that are useful in the treatment of viral infections in mammals, particularly in humans, mediated, at least in part, by a virus in the Flaviviridae family of viruses.

Disclosed are compounds having Formula (I) and the compositions and methods thereof for treating or preventing a viral infection mediated at least in part by a virus in the Flaviviridae family of viruses, wherein A, R<2>, m, R, V, W, T, Z, R<1>, Y and p are disclosed herein.

The invention provides a vaccine for preventing duck egg reduction syndrome caused by BYD virus and a preparation method thereof. The invention provides a duck BYD virus (Family Flaviviridae, Genus Flavivirus, Ntaya virus group, Duck BYD virus) JXSP strain, and the preservation number is CGMCC No.5266. The virulent strain provided by the invention is duck BYD virus virulent strain with excellent immunogenicity. The virulent strain is vaccinated onto a sensitive cell to obtain cell sap, which is emulsified after being inactivated so as to obtain the safe, effective and controllable duck BYD virus inactivated vaccine, so that the prevention and the control of the duck egg reduction syndrome can be favored.

Provided are compounds of Formula I:and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of Flaviviridae virus infections, particularly hepatitis C infections.

The present invention provides methods for treating infections, in a host, by viruses belonging to the Flaviviridae family, such as HCV, comprising administering an Ara-C homologue to the host.

The present invention provides nucleoside analogue compounds that treat a host infected with a Flaviviridae virus infection, or other viruses that exhibit RNA-dependent RNA viral replication, compositions comprising these compounds and methods of using the compounds for the treatment and / or prophylaxis of viral infection, especially hepatitis C, in an infected host.

The invention belongs to the technical field of medicines, and relates to a phosphoramidate derivative of a nucleoside compound and application thereof, and a pharmaceutical composition containing thecompound. The phosphoramidate derivative can be used as an antiviral reagent, especially an anti-SARS-CoV-2 reagent. The invention also relates to a method for preparing the compound and the pharmaceutical composition, and application of the compound and the pharmaceutical composition in preventing or treating viral infection, including but not limited to flaviviridae viral infection, filamentousvirology viral infection, enterovirus viral infection, orthomyxoviridae viral infection, paramyxoviridae viral infection and coronavirus viral infection, especially SARS-CoV-2 infection.

The present invention relates to specific immortalized avian cell lines expressing telomerase reverse transcriptase (TERT), and exhibiting distinct biologics production patterns. More particularly, the present invention relates to immortalized avian cell line capable of either amplifying Flaviviridae but not capable of amplifying Vaccinia virus strain Copenhagen (W—COP) nor Modified Vaccinia virus Ankara (MVA), or capable of amplifying both Flaviviridae and Poxyiridae. The invention further relates to the use of said immortalized avian cell lines and related methods for producing biologics, including viruses and proteins.

A compound is selected from the structural formulae depicted in FIG. 1 or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound selected from the structural formulae depicted in FIG. 1 or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier of excipient. A method of treating a HCV infection in a subject comprises administering to the subject a therapeutically effective amount of selected from the structural formulae depicted in FIG. 1 or a pharmaceutically acceptable salt thereof. A method of inhibiting or reducing the activity of HCV polymerase in a subject or in a biological in vitro sample comprises administering to the subject or to the sample a therapeutically effective amount of selected from the structural formulae depicted in FIG. 1 or a pharmaceutically acceptable salt thereof.

Use of a recombinant lentiviral vector comprising a polynucleotide fragment encoding at least one protein of a virus of the family Flaviviridae or an immunogenic peptide of at least 8 amino acids of said protein, for preparing a pharmaceutical composition intended for the prevention and / or the treatment of a Flaviviridae infection in a sensitive species.