Patents by Inventor B. Rao Vishnuvajjala

B. Rao Vishnuvajjala 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: 7834005
    Abstract: Disclosed are compounds of Formula I wherein X, Y, R1-R7, T1, T2, Z, and p are as described herein; a pharmaceutical composition comprising a compound of Formula I and a carrier; a method of inhibiting growth of a cell, which method comprises administering in an amount effective to inhibit growth a compound of Formula I; a method of treating cancer in a mammal, which method comprises administering in an amount effective to treat cancer a compound of Formula I; a method of treating a viral, parasitic, or bacterial infection of a cell, which method comprises administering in an amount effective to treat a viral, parasitic, or bacterial infection a compound of Formula I; and a method of preparing a compound of Formula I as described herein.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: November 16, 2010
    Assignees: The United States of America as represented by the Department of Health and Human Services, Starks Associates, Inc., Midwest Research Institute, Spirogen, Ltd.
    Inventors: Paul S. Liu, B. Rao Vishnuvajjala, Kenneth M. Snader, David E. Thurston, Philip W. Howard, Luke Y. Hsiao, Gregory Turner
  • Publication number: 20090149449
    Abstract: Disclosed are compounds of Formula I wherein X, Y, R1-R7, T1, T2, Z, and p are as described herein; a pharmaceutical composition comprising a compound of Formula I and a carrier; a method of inhibiting growth of a cell, which method comprises administering in an amount effective to inhibit growth a compound of Formula I; a method of treating cancer in a mammal, which method comprises administering in an amount effective to treat cancer a compound of Formula I; a method of treating a viral, parasitic, or bacterial infection of a cell, which method comprises administering in an amount effective to treat a viral, parasitic, or bacterial infection a compound of Formula I; and a method of preparing a compound of Formula I as described herein.
    Type: Application
    Filed: February 13, 2009
    Publication date: June 11, 2009
    Applicants: The United States of America, as represented by the Secretary, Dept. of Health and Human Service, Starks Associates, Inc., Midwest Research Institute, Spirogen, Ltd.
    Inventors: Paul S. Liu, B. Rao Vishnuvajjala, Kenneth M. Snader, David E. Thurston, Philip W. Howard, Luke Y. Hsiao, Gregory Turner
  • Patent number: 7511032
    Abstract: Disclosed are compounds of Formula (I) wherein X, Y, Ri-R7, T1, T2, Z, and p are as described herein; a pharmaceutical composition comprising a compound of Formula (I) and a carrier; a method of inhibiting growth of a cell, which method comprises administering in an amount effective to inhibit growth a compound of Formula (I); a method of treating cancer in a mammal, which method comprises administering in an amount effective to treat cancer a compound of Formula (I); a method of treating a viral, parasitic, or bacterial infection of a cell, which method comprises administering in an amount effective to treat a viral, parasitic, or bacterial infection a compound of Formula (I); and a method of preparing a compound of Formula (I) as described herein.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: March 31, 2009
    Assignees: The United States of America as represented by the Secretary, Department of Health and Human Services, Starks Associates, Inc., Midwest Research Institute, Spirogen, Ltd.
    Inventors: Paul S Liu, B. Rao Vishnuvajjala, Kenneth M Snader, David E Thurston, Philip W Howard, Luke Y Hsiao, Gregory Turner
  • Patent number: 7476692
    Abstract: The present invention provides stable aqueous solutions consisting essentially of: (a) a sphingolipid; (b) lactic acid; and (c) optionally a stabilizing agent; wherein the solution has a molar ratio of lactic acid to sphingolipid of 1:1 to 10:1. The present invention further provides an emulsion formulation consisting essentially of: (a) lactic acid; (b) a sphingolipid, wherein the sphingolipid is present in an amount of about 0.1 to about 30 mg/ml of emulsion; (b) optionally an isotonic agent; and (c) a phospholipid present in an amount of about 0.2 to about 200 mg/ml of emulsion. Methods of making and using the compositions are also provided.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: January 13, 2009
    Assignee: Childrens Hospital Los Angeles
    Inventors: Shanker Gupta, C. Patrick Reynolds, Barry J. Maurer, B. Rao Vishnuvajjala
  • Patent number: 7244724
    Abstract: A compound of formula I: or solvate thereof, wherein n is 1 to 10, and M and M? are independently selected from monovalent pharmaceutically acceptable cations, or together represent a divalent pharmaceutically acceptable cation.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: July 17, 2007
    Assignees: United States of America, Represented by the Secretary, Department of Health and Human Services, Spirogen, Ltd.
    Inventors: Paul S. Liu, B. Rao Vishnuvajjala, Kenneth M. Snader, David E. Thurston, Philip Howard, Stephen Gregson
  • Patent number: 7169819
    Abstract: A pharmaceutical composition for parenteral delivery, comprising a retinide such as fenretinide in combination with a solvent capable of dispersing or solubilizing the retinide. The solvent comprises an alcohol, such as ethanol, in combination with an alkoxylated castor oil, such as CREMOPHOR® EL, or comprising a retinide, such as fenretinide, in an emulsion composed of a lipoid dispersed in an aqueous phase, a stabilizing amount of a non-ionic surfactant, optionally a solvent, and optionally an isotonic agent. In addition, a method of use in the treatment of hyperproliferative disorders, such as cancers is described.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: January 30, 2007
    Assignee: Childrens Hospital Los Angeles
    Inventors: Shanker Gupta, Barry J. Maurer, C. Patrick Reynolds, B. Rao Vishnuvajjala
  • Patent number: 6890917
    Abstract: A geldanamycin derivative exhibiting significant preliminary in vivo activity, particularly significant oral in vivo activity, and a method of treating or preventing cancer in a host comprising administering a geldanamycin derivative to a host in an amount sufficient to treat or prevent cancer.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: May 10, 2005
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Kenneth M. Snader, B. Rao Vishnuvajjala, Melinda G. Hollingshead, Edward A. Sausville
  • Patent number: 6838090
    Abstract: The present invention provides a drug delivery system comprising a water-insoluble drug, a water-miscible organic solvent for the water-insoluble drug, a surfactant, and water, as well as a process for preparing the same. This invention further provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and such a drug delivery system. In addition, the present invention provides a method of delivering a drug to a host by administering to the host the drug delivery system of the present invention.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 4, 2005
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: S. Esmail Tabibi, Emmanuel I. Ezennia, B. Rao Vishnuvajjala, Shanker Gupta
  • Patent number: 6812246
    Abstract: The invention provides an aminoflavone having formula (I), wherein each of R1 and R2 is H, COCH2—R7, wherein R7 is amino alkylamino, dialkylamino, or alkyl- or dialkylaminoalkyl, or an &agr;-amino acid residue, provided that at least one of R1 or R2 is other than H, and R3 is H, branched or straight-chain alkyl, hydroxyalkyl, alkanoyloxyalkyl, alkanoyloxy, alkoxy, or alkoxyalkyl, or pharmaceutically acceptable salts thereof. The present invention also provides a pharmaceutical composition comprising an aminoflavone as described above, and a method of inhibiting the growth of a tumor in a host by administering a tumor growth-inhibiting amount of an aminoflavone compound having the formula as described above.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: November 2, 2004
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Kenneth M. Snader, B. Rao Vishnuvajjala, Tsutomu Akama
  • Publication number: 20040053909
    Abstract: A geldanamycin derivative exhibiting significant preliminary in vivo activity, particularly significant oral in vivo activity, and a method of treating or preventing cancer in a host comprising administrering a geldanamycin derivative to a host in an amount sufficient to treat or prevent cancer.
    Type: Application
    Filed: September 16, 2003
    Publication date: March 18, 2004
    Inventors: Kenneth M. Snader, B. Rao Vishnuvajjala, Melinda G. Hollingshead, Edward A. Sausville
  • Publication number: 20040019227
    Abstract: The invention provides an aminoflavone having formula (I), wherein each of R1 and R2 is H, COCH2—R7, wherein R7 is amino alkylamino, dialkylamino, or alkyl- or dialkylaminoalkyl, or an &agr;-amino acid residue, provided that at least one of R1 or R2 is other than H, and R3 is H, branched or straight-chain alkyl, hydroxyalkyl, alkanoyloxyalkyl, alkanoyloxy, alkoxy, or alkoxyalkyl, or pharmaceutically acceptable salts thereof. The present invention also provides a pharmaceutical composition comprising an aminoflavone as described above, and a method of inhibiting the growth of a tumor in a host by administering a tumor growth-inhibiting amount of an aminoflavone compound having the formula as described above.
    Type: Application
    Filed: June 12, 2003
    Publication date: January 29, 2004
    Inventors: Kenneth M. Snader, B. Rao Vishnuvajjala, Tsutomu Akama
  • Patent number: 6682758
    Abstract: The present invention provides a drug delivery system comprising a water-insoluble drug, a water-miscible organic solvent for the water-insoluble drug, a surfactant, and water, as well as a process for preparing the same. This invention further provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and such a drug delivery system. In addition, the present invention provides a method of delivering a drug to a host by administering to the host the drug delivery system of the present invention.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: January 27, 2004
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: S. Esmail Tabibi, Emmanuel I. Ezennia, B. Rao Vishnuvajjala, Shanker Gupta
  • Publication number: 20030211144
    Abstract: The present invention provides a drug delivery system comprising a water-insoluble drug, a water-miscible organic solvent for the water-insoluble drug, a surfactant, and water, as well as a process for preparing the same. This invention further provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and such a drug delivery system. In addition, the present invention provides a method of delivering a drug to a host by administering to the host the drug delivery system of the present invention.
    Type: Application
    Filed: June 5, 2003
    Publication date: November 13, 2003
    Applicant: Government of the U.S.A., represented by the Secretary, Department of Health and Human Services
    Inventors: S. Esmail Tabibi, Emmanuel I. Ezennia, B. Rao Vishnuvajjala, Shanker Gupta
  • Publication number: 20020183394
    Abstract: A pharmaceutical composition for parenteral delivery, comprising a retinide such as fenretinide in combination with a solvent capable of dispersing or solubilizing the retinide. The solvent comprises an alcohol, such as ethanol, in combination with an alkoxylated castor oil, such as CREMOPHOR® EL, or comprising a retinide, such as fenretinide, in an emulsion composed of a lipoid dispersed in an aqueous phase, a stabilizing amount of a non-ionic surfactant, optionally a solvent, and optionally an isotonic agent. In addition, a method of use in the treatment of hyperproliferative disorders, such as cancers is described.
    Type: Application
    Filed: December 5, 2001
    Publication date: December 5, 2002
    Inventors: Shanker Gupta, Barry J. Maurer, C. Patrick Reynolds, B. Rao Vishnuvajjala
  • Patent number: 5824674
    Abstract: Provided are brefeldin A derivatives of the formula: ##STR1## wherein one of R.sub.1 and R.sub.2 is H and the other of R.sub.1 and R.sub.2 is a substituent group having 1 to 12 carbon atoms containing a basic nitrogen atom or a quaternary ammonium group, or a salt thereof. These derivatives exhibit good antitumor activity, and are administrable to human patients without the problems associated with brefeldin A.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: October 20, 1998
    Assignees: The United States of America as represented by the Department of Health and Human Services, Starks Associates
    Inventors: Louis Malspeis, B. Rao Vishnuvajjala, Jeffrey G. Supko, Charles Theodore Kane, Jr.
  • Patent number: 5696154
    Abstract: Provided are brefeldin A derivatives of the formula: ##STR1## wherein one of R.sub.1 and R.sub.2 is H and the other of R.sub.1 and R.sub.2 is a substituent group having 1 to 12 carbon atoms containing a basic nitrogen atom or a quaternary ammonium group, or a salt thereof. These derivatives exhibit good antitumor activity, and are administrable to human patients without the problems associated with brefeldin A.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: December 9, 1997
    Assignees: The United States of America as represented by the Department of Health and Human Services, Starks Associates, Inc.
    Inventors: Louis Malspeis, B. Rao Vishnuvajjala, Jeffrey G. Supko, Charles Theodore Kane, Jr.
  • Patent number: 4943579
    Abstract: Water-soluble derivatives of camptothecin have the formulae: ##STR1## wherein R' is selected from the group consisting of R=CO CH.sub.2 NH.sub.2.HClR=CO CH.sub.2 NHCH.sub.3.HClR=CO CH.sub.2 NHC.sub.2 H.sub.5.HClR=CO CH.sub.2 N(C.sub.2 H.sub.5).sub.2.HClR=CO CH(NH.sub.2) CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2.2HClR=CO CH(NH.sub.2) CH.sub.2 CH.sub.2 COOH. HClR=CO CH.sub.2 CH.sub.2.COO.sup.- Na.sup.+R=HPO.sub.3.sup.- Na.sup.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: July 24, 1990
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: B. Rao Vishnuvajjala, Aaron Garzon-Aburbeh