Patents by Inventor Premkumar Reddy

Premkumar Reddy 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: 7122571
    Abstract: Compounds useful as inhibitors of cyclooxygenase-2 activity have the formulae I or Ia: wherein: Q1, Q2, n, m, X, Y and R are as defined herein.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: October 17, 2006
    Assignee: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M.V. Ramana Reddy
  • Patent number: 7056953
    Abstract: (E)-styryl benzylsulfones of formula I are useful as anticancer agents: wherein R1, R2, R3, and R4 are as defined herein.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: June 6, 2006
    Assignee: Temple University - of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Patent number: 7053123
    Abstract: (E)-Styryl benzylsulfones useful as antiproliferative agents, including, for example, anticancer agents, are provided according to formula I: wherein: R1 is selected from the group consisting of halogen, C1–C6 alkoxy, nitro, phosphonato, amino, sulfamyl, carboxy, acetoxy and dimethylamino (C2–C6 alkoxy); and R2 and R3 are independently selected from the group consisting of halogen, C1–C6 alkoxy, C1–C6 alkyl, nitro, cyano, hydroxyl, phosphonato, amino, sulfamyl, carboxy, acetoxy, and dimethylamino (C2–C6 alkoxy); provided: R1 may not be halogen when R2 and R3 are both halogen; R2 may not be 2-halogen when R3 is 4-halogen; or a pharmaceutically acceptable salt thereof; or formula II: wherein: R4 is selected from the group consisting of C1–C6 alkoxy, phosphonato, amino, sulfamyl, carboxy, acetoxy and dimethylamino (C2–C6 alkoxy); R6 is selected from the group consisting of nitro, hydrogen, phosphonato, amino, sulfamyl, carboxy, acetoxy and dimethylamino (C2–C6 alkoxy); and R7 is selected from the group consistin
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: May 30, 2006
    Assignee: Temple University-of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Patent number: 6933128
    Abstract: A cell-based assay is provided for screening substances for the capacity to inhibit COX-2 activity. The assay utilizes as a screening reagent a cell line which has been engineered to achieve constitutive or inducible expression of COX-2. In one embodiment, the cells express a GTPase-deficient, constitutively-activated mutant form of the ?-subunit of protein G12 which induces the production of arachidonic acid and COX-2. Decreased cell proliferation in the presence of test substance indicates that the substance has COX-2 inhibitory activity.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: August 23, 2005
    Assignee: Temple University-of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy, Natarajan Dhanasekaran
  • Patent number: 6833480
    Abstract: Substituted (Z)-styrylbenzyl sulfones of the formulae (I, II, III, IV), pharmaceutically acceptable salts thereof, and compositions thereof are provided as cell antiproliferative agents, including, for example, anticancer agents.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: December 21, 2004
    Assignee: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Publication number: 20040229959
    Abstract: (E)-styryl benzylsulfones of formula I are useful as anticancer agents: 1
    Type: Application
    Filed: May 18, 2004
    Publication date: November 18, 2004
    Applicant: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M.V. Ramana Reddy
  • Publication number: 20040214903
    Abstract: Pre-treatment with &agr;,&bgr; unsaturated aryl sulfones protects normal cells from the cytotoxic side effects of two classes of anticancer chemotherapeutics. Administration of a cytoprotective sulfone compound to a patient prior to anticancer chemotherapy with a mitotic phase cell cycle inhibitor or topoisomerase inhibitor reduces or eliminates the cytotoxic side effects of the anticancer agent on normal cells. The cytoprotective effect of the &agr;,&bgr; unsaturated aryl sulfone allows the clinician to safely increasing the dosage of the anticancer chemotherapeutic.
    Type: Application
    Filed: May 21, 2004
    Publication date: October 28, 2004
    Inventors: Stephen C. Cosenza, M.V. Ramana Reddy, E. Premkumar Reddy
  • Publication number: 20040203067
    Abstract: The invention provides prognostic methods which comprise determining the level of expression of the gene c-fyn, or the level of activated STAT-3 protein. Because the relative level of c-fyn expression and level of activated STAT-3 protein correlate with the presence of malignant potential and therefore patient prognosis, these markers may be used to make treatment decisions, to predict patient outcome, and to predict the risk of cancer in disease-free individuals. The invention further provides a method for identifying anticancer drugs in which inhibitors of cell proliferation are identified as inhibitors of Src-mediated STAT phosphorylation.
    Type: Application
    Filed: May 13, 2004
    Publication date: October 14, 2004
    Applicant: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, Priya Chaturvedi, M.V. Ramana Reddy, John R. Jenkins
  • Patent number: 6787667
    Abstract: (E)-styryl benzylsulfones of formula I are useful as anticancer agents: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, fluoro, chloro, iodo, bromo, C1-C6 alkyl, C1-C4 alkoxy, nitro, cyano and trifluoromethyl, with the proviso that (a) R1, R2 , and R3 not all hydrogen when R4 is 2-chloro or 4-chloro; (b) when R1 and R3 are hydrogen and R2 is 4-bromo or 4-chloro, then R4 may not be 4-chloro, 4-fluoro or 4-bromo; (c) when R1 and R3 are hydrogen and R2 is 4-fluoro, then R4 may not be 4-fluoro or 4-bromo, (d) when R1 is hydrogen, and R4 is 2-fluoro, the R2 and R3 may not be 4-fluoro; and (e) when R1 is hydrogen and R3 is 4-hydrogen, 4-chloro, 4-bromo, 4-methyl or 4-methoxy, and R4 is 2-hydrogen, 2-chloro, or 2-fluoro; then R2 may not be 4-hydrogen, 4-chloro, 4-fluoro, or 4-bromo.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: September 7, 2004
    Assignee: Temple University - of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Patent number: 6767926
    Abstract: Pre-treatment with &agr;,&bgr; unsaturated aryl sulfones protects normal cells from the cytotoxic side effects of two classes of anticancer chemotherapeutics. Administration of a cytoprotective sulfone compound to a patient prior to anticancer chemotherapy with a mitotic phase cell cycle inhibitor or topoisomerase inhibitor reduces or eliminates the cytotoxic side effects of the anticancer agent on normal cells. The cytoprotective effect of the &agr;,&bgr; unsaturated aryl sulfone allows the clinician to safely increasing the dosage of the anticancer chemotherapeutic.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: July 27, 2004
    Assignee: Temple University - Of The Commonwealth System of Higher Education
    Inventors: Stephen C. Cosenza, M. V. Ramana Reddy, E. Premkumar Reddy
  • Patent number: 6762207
    Abstract: (E)-styryl benzylsulfones of formula I are useful as anticancer agents: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, fluoro, chloro, iodo, bromo, C1-C6 alkyl, C1-C4 alkoxy, nitro, cyano and trifluoromethyl, with the proviso that (a) R1, R2, and R3 not all hydrogen when R4 is 2-chloro or 4-chloro; (b) when R1 and R3 are hydrogen and R2 is 4-bromo or 4-chloro, then R4 may not be 4-chloro, 4-fluoro or 4-bromo; (c) when R1 and R3 are hydrogen and R2 is 4-fluoro, then R4 may not be 4-fluoro or 4-bromo; (d) when R1 is hydrogen, and R4 is 2-fluoro, the R2 and R3 may not be 4-fluoro; and (e) when R1 is hydrogen and R3 is 4-hydrogen, 4-chloro, 4-bromo, 4-methyl or 4-methoxy, and R4 is 2-hydrogen, 2-chloro, or 2-fluoro; then R2 may not be 4-hydrogen, 4-chloro, 4-fluoro, or 4-bromo.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 13, 2004
    Assignee: Temple University - of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Publication number: 20040133030
    Abstract: Substituted (Z)-styrylbenzyl sulfones of the formulae (I, II, III, IV), pharmaceutically acceptable salts thereof, and compositions thereof are provided as cell antiproliferative agents, including, for example, anticancer agents.
    Type: Application
    Filed: August 21, 2003
    Publication date: July 8, 2004
    Inventors: E Premkumar Reddy, M V Ramana Reddy
  • Patent number: 6667346
    Abstract: Pre-treatment with &agr;,&bgr; unsaturated aryl sulfones protects normal cells from the toxic side effects of ionizing radiation. Administration of a radioprotective &agr;,&bgr; unsaturated aryl sulfone compound to a patient prior to anticancer radiotherapy reduces the cytotoxic side effects of the radiation on normal cells. The radioprotective effect of the &agr;,&bgr; unsaturated aryl sulfone allows the clinician to safely increase the dosage of anticancer radiation. In some instances, amelioration of toxicity following inadvertent radiation exposure may be mitigated with administration of &agr;,&bgr; unsaturated arylsulfone.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: December 23, 2003
    Assignees: Temple University - Of The Commonwealth System of Higher Education, Onconova Therapeutics, Inc.
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy, Stephen C. Cosenza, Lawrence Helson
  • Patent number: 6656968
    Abstract: Compounds of the formula are provided wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, halogen, hydroxyl, C1-C8 alkyl, C1-C6 alkoxy, nitro, cyano, acetoxy, amino, carboxy, sulfamyl, lower acylsulfamyl and trifluoromethyl. The compounds are inhibitors of cyclooxygenase-2 activity, useful for treating inflammation and cyclooxygenase-mediated disorders.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: December 2, 2003
    Assignee: Temple University - Of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Patent number: 6656973
    Abstract: Provided are the compound (E)-4-carboxystyryl-4-chlorobenzyl sulfone, pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: December 2, 2003
    Assignee: Temple University - Of the Commonwealth System of Higher Education
    Inventors: Stephen C. Cosenza, M. V. Ramana Reddy, E. Premkumar Reddy
  • Publication number: 20030216535
    Abstract: (E)-styryl benzylsulfones of formula I are useful as anticancer agents: 1
    Type: Application
    Filed: June 16, 2003
    Publication date: November 20, 2003
    Applicant: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M.V. Ramana Reddy
  • Patent number: 6646009
    Abstract: N-(Aryl)-2-arylethenesulfonamides and pharmaceutically acceptable salts and compositions thereof are useful as antiproliferative agents, including, for example, anticancer agents. They are also useful as radioprotective agents.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: November 11, 2003
    Assignees: Temple University — Of Commonwealth System of Higher Education, Onconova Therapeutics, Inc.
    Inventors: E. Premkumar Reddy, M.V. Ramana Reddy, Stanley C. Bell
  • Patent number: 6642410
    Abstract: Styryl benzylsulfones of formula I are useful as antiproliferative agents, including, for example, anticancer agents: wherein R1 through R10 are defined herein; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: November 4, 2003
    Assignee: Temple University-of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Publication number: 20030187035
    Abstract: Compounds useful as inhibitors of cyclooxygenase-2 activity have the formulae I or Ia: 1
    Type: Application
    Filed: December 10, 2002
    Publication date: October 2, 2003
    Inventors: E. Premkumar Reddy, M.V. Ramana Reddy
  • Publication number: 20030166270
    Abstract: A mutant modified cyclin dependent kinase protein, or biologically active fragment, derivative, homolog or analog thereof is provided, which reversibly induces continual growth in cultured cells when administered to the cells exogenously in culture. Methods of reversibly inducing continual growth in cultured cells, and methods of screening cancer-causing agents with the continual growth-induced cells, are also provided.
    Type: Application
    Filed: November 15, 2002
    Publication date: September 4, 2003
    Applicant: Temple University - Of The Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, Sushil G. Rane, Richard V. Mettus