Patents by Inventor Raymond F. Schinazi

Raymond F. Schinazi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5462724
    Abstract: Compounds of formula I and II ##STR1## in which B contains a carboranyl group and one of R.sub.3 and R.sub.4 is a carboranyl group or a boronic acid or ester are useful sensitizing agents for boron neutron capture therapy.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: October 31, 1995
    Inventors: Raymond F. Schinazi, Dennis C. Liotta
  • Patent number: 5444063
    Abstract: A method and composition for the treatment of humans infected with HBV that includes the administration of an HBV treatment amount of a .beta.-dioxolanyl purine nucleoside of the formula: ##STR1## wherein R is OH, Cl, NH.sub.2, or H, or a pharmaceutically acceptable salt or derivative of the compound, optionally in a pharmaceutically acceptable carrier or diluent.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: August 22, 1995
    Assignee: Emory University
    Inventor: Raymond F. Schinazi
  • Patent number: 5405598
    Abstract: Compounds of formula I and II ##STR1## in which B contains a carboranyl group and one of R.sub.3 and R.sub.4 is a carboranyl group or a boronic acid or ester are useful sensitizing agents for boron neutron capture therapy.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: April 11, 1995
    Inventors: Raymond F. Schinazi, Dennis C. Liotta
  • Patent number: 5304554
    Abstract: Novel 4-[(alkyl or dialkyl)amino]quinolines are disclosed that are prepared by condensinBACKGROUND OF THE INVENTIONThe United States government has rights in this invention as a result of a grant from the NIAID of the National Institute of Health, Bethesda, Md.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: April 19, 1994
    Assignees: Emory University, Georgia State University Research Foundation
    Inventors: Lucjan Strekowski, Roman L. Wydra, Steven E. Patterson, Raymond F. Schinazi
  • Patent number: 5281616
    Abstract: Compositions for the inhibition of replication of human immunodeficiency virus containing one or more "porphyrins" possessing antiviral activity. As used herein "porphyrins" includes porphyrins, phthalocyanines, chlorins, metallo derivatives thereof, and other porphyrin-like compounds. Examples of natural and synthetic, positively, negatively, and neutrally charged porphyrins, phthalocyanines, and derivatives thereof have been found to exhibit selective anti-HIV activity which is not dependent on the presence of light.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: January 25, 1994
    Assignees: Georgia State University Foundation, Inc., Emory University
    Inventors: Dabney W. Dixon, Raymond F. Schinazi, Luigi G. Marzilli
  • Patent number: 5210085
    Abstract: The present invention relates to a method of preparing the antiviral compounds 2'-deoxy-5-fluoro-3'thiacytidine (FTC) and various prodrug analogues of FTC from inexpensive precursors with the option of introducing functionality as needed; methods of using these compounds, particularly in the prevention and treatment of AIDS; and the compounds themselves. This synthetic route allows the stereoselective preparation of the biologically active isomer of these compounds and related compounds.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: May 11, 1993
    Assignee: Emory University
    Inventors: Dennis C. Liotta, Raymond F. Schinazi, Woo-Baeg Choi
  • Patent number: 5192788
    Abstract: Compositions for the treatment or prevention of AIDS or other diseases resulting from infection with the Human Immunodeficiency Virus containing one or more porphyrins.Porphyrins are tetrapyrrole macrocyle compounds with bridges of one carbon joining the pyrroles. Porphyrins occur naturally and are made synthetically. Derivatives of porphyrins include porphyrins with one or more substituents on one or more of the rings, porphyrins in which the conjugation of the ring has been altered by addition of substituents, porphyrins in which one or more center nitrogens is attached to substituents such as metals, liganded metals, and organic moieties, metalloporphyrins and metalloporphyrin-ligand complexes.Examples of natural and synthetic, positively, negatively, and neutrally charged porphyrins and porphyrin derivatives have been found to exhibit selective anti-HIV activity which is not dependent on the presence of light.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: March 9, 1993
    Assignees: Georgia State University Foundation, Inc., Emory University
    Inventors: Dabney W. Dixon, Raymond F. Schinazi, Luigi G. Marzilli
  • Patent number: 5190926
    Abstract: A pharmaceutical composition in dosage unit form comprising a therapeutically effective HIV inhibitory amount of a compound having the formula: ##STR1## wherein R.sup.1 is selected from the group consisting of OH, C.sub.1-4 acyl, sulfate phosphate, and amino; R.sup.2 is O or NH, and R.sup.3 C or N, or a pharmacologically acceptable acid addition salt thereof, in association with a pharmaceutical carrier.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: March 2, 1993
    Assignees: University of Georgia Research Foundation, Inc., Emory University
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 5179104
    Abstract: An asymmetric process for the preparation of enantiomerically pure .beta.-D-(-)-dioxolane-nucleosides. The enantiomerically pure dioxolane nucleosides are active HIV agents, that are significantly more effective than the prior prepared racemic mixtures of the nucleosides. The anti-viral activity of the compounds is surprising in light of the generally accepted theory that moieties in the endo conformation, including these dioxolanes, are not effective antiviral agents. The toxicity of the enantiomerically pure dioxolane nucleosides is lower that that of the racemic mixture of the nucleosides, because the nonnaturally occurring .alpha.-isomer is not included.The product can be used as a research tool to study the inhibition of HIV in vitro or can be administered in a pharmaceutical composition to inhibit the growth of HIV in vivo.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: January 12, 1993
    Assignee: University of Georgia Research Foundation, Inc.
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 5159067
    Abstract: Compounds of the general formula: ##STR1## wherein A, B, and C are hydrogen, halogen, or azido; D is hydrogen, halogen, azido, or OH; A and B or C and D can be replaced with a double bond; R is an aldohexose, aldohexosamine, or N-acetyl aldohexosamine, R.sub.1 and R.sub.2 are hydrogen or alkyl groups of from C.sub.1 to C.sub.10 ; W is oxygen or sulfur; X is oxygen, sulfur, or CH.sub.2 ; Y is a purine or pyrimidine base, and Z is carbon, sulfur, or oxygen. Y can be any purine or pyrimidine base, natural or synthetic, which combines with a sugar to form a biologically active nucleoside. In combination with an appropriate pharmaceutical carrier, the compositions have enhanced activity or increased intracellular absorbment over the parent nucleoside as a function of the 5'-O-diphosphosugar.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: October 27, 1992
    Assignees: University of Georgia Research Foundation Inc., University of Alabama at Birmingham Research Foundation, Inc.
    Inventors: Raymond F. Schinazi, Jean-Pierre Sommadossi, Chum K. Chung
  • Patent number: 5118672
    Abstract: This invention provides compounds and pharmaceutical compositions that include compounds of the formula: ##STR1## in which A, B, and C are hydrogen, halogen, or azido; D is hydrogen, halogen, azido, or OH; A and B or C and D can be replaced with a double bond; R is an aldohexose, aldohexosamine, or N-acetyl aldohexosamine, W is O or S; X is O, S, or CH.sub.2 ; Y is a purine or pyrimidine base, Z is C, S, or O, and wherein when Z is S or O, A and C are not present. The compounds of this inverntion have enhanced pharmaceutical or biological activity or increased intracellular absorption compared to the corresponding parent nucleoside as a function of the 5'-diphosphohexose moiety. Many of these compounds have antiviral, including anti-HIV, activity. Others have antibacterial activity. In one embodiment, the invention is a method to treat HIV infection and opportunistic infections concomitantly.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: June 2, 1992
    Assignees: University of Georgia Research Foundation, Emory University, UAB Research Foundation
    Inventors: Raymond F. Schinazi, Jean-Pierre Sommadossi, Chung K. Chu, William M. Shafer
  • Patent number: 5109016
    Abstract: Compositions for the inhibition of replication of human immunodeficiency virus containing one or more "porphyrins" possessing antiviral activity. As used herein "porphyrins" includes porphyrins, phthalocyanines, chlorins, metallo derivatives thereof, and other porphyrin-like compounds. Examples of natural and synthetic, positively, negatively, and neutrally charged porphyrins, phthalocyanines, and derivatives thereof have been found to exhibit selective anti-HIV activity which is not dependent on the presence of light.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: April 28, 1992
    Assignees: Georgia State University Foundation, Inc., Emory University
    Inventors: Dabney W. Dixon, Raymond F. Schinazi, Luigi G. Marzilli
  • Patent number: 5084445
    Abstract: The present invention is an antiviral composition which includes a means and method for delivering an HIV-inhibitory amount of an active compound of the general formula: ##STR1## wherein R is OH, monophosphate, diphosphate, or triphosphate, or a pharmacologically acceptable salt thereof; and wherein the means is a pharmaceutically acceptable carrier. In the preferred embodiment, an effective dose of 3'-azido-2',3'-dideoxy-5-methylcytidine, or its derivatives is administered in a pharmaceutically acceptable carrier to a patient for the treatment of AIDS.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: January 28, 1992
    Assignees: University of Georgia Research Foundation, Inc., Emory University
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 5077279
    Abstract: A composition delivering an HIV-inhibitory amount of an active compound of the general formula: ##STR1## wherein R is OH, monophosphate, diphosphate, or triphosphate, or a pharmacologically acceptable salt thereof; and wherein the means is a pharmaceutically acceptable carrier. In the preferred embodiment, an effective dose of 3'-azido-2',3'-dideoxy-5-methylcytidine, or its derivatives, is administered in a pharmaceutically acceptable carrier to a patient for the treatment of AIDS.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: December 31, 1991
    Assignees: University of Georgia Research Foundation, Inc., Emory University
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 4916122
    Abstract: Compositions for the treatment of AIDS and ARC having the following compound as an active ingredient: ##STR1## where R.sup.1 is OH, monophosphate, diphosphate, or triphosphate; or a pharmacologically acceptable salt thereof.The primary advantage of this compound is its highly selective anti-retroviral activity, i.e., it significantly decreases viral replication as measured as reverse transcriptase activity while demonstrating orders of magnitude less cytotoxicity than other anti-viral compounds such as AZT.In a preferred embodiment, the compound is present in an amount sufficient to inhibit the HIV reverse transcriptase activity but not significantly inhibit human DNA polymerase activity. Also included within the scope of this invention are 3'-azido-2',3'-dideoxyuridine mono-, di-, and triphosphate and compositions containing these compounds as the active agent.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: April 10, 1990
    Assignees: University of Georgia Research Foundation, Inc., Emory University
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 4841039
    Abstract: A compound which exhibits antiviral activity towards HTLV-III/LAV, having the formula: ##STR1## wherein R.sup.4 is O or NH;R.sup.5 is a C.sub.2-4 alkyl group or a C.sub.3-4 cycloalkyl group, whereinsaid alkyl group or cycloalkyl group may be substituted by one or more of Cl, Br, I, F, OH, N.sub.3, NH.sub.2, SO.sub.3 H, or COOH;R.sup.6 is hydrogen or a C.sub.1 -C.sub.4 alkyl group, which may be substituted by Cl, Br, I, F, OH, N.sub.3, NH.sub.2, SO.sub.3 H, or COOH;R.sup.3' is N.sub.3, NH.sub.2, or H; and R.sup.5' is N.sub.3, NH.sub.2, OH, phosphate, or a C.sub.1-4 acyl group.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: June 20, 1989
    Assignees: Emory University, University of Georgia Research Foundation, Inc.
    Inventors: Chung K. Chu, Raymond F. Schinazi
  • Patent number: 4681933
    Abstract: A compound which exhibits antiviral activity towards HTLV-III/LAV, having the formula: ##STR1## wherein R.sup.4 is O or NH; R.sup.5 is a C.sub.2-4 alkyl group or a C.sub.3-4 cycloalkyl group, wherein said alkyl group or cycloalkyl group may be substituted by one or more of Cl, Br, I, F, OH, N.sub.3, NH.sub.2, SO.sub.3 H, or COOH; R.sup.6 is hydrogen or a C.sub.1 -C.sub.4 alkyl group, which may be substituted by Cl, Br, I, F, OH, N.sub.3, NH.sub.2, SO.sub.3 H, or COOH; R.sup.3' is N.sub.3, NH.sub.2, or H; and R.sup.5' is N.sub.3, NH.sub.2, OH, phosphate, or a C.sub.1-4 acyl group.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: July 21, 1987
    Assignees: University of Georgia Research Foundation, Inc., Emory University
    Inventors: Chung K. Chu, Raymond F. Schinazi