Patents by Inventor Ivan King

Ivan King 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: 8026395
    Abstract: The present invention relates to simple, safe, high-yield methods of synthesizing VNP40101M, 1,2-bis(methylsulfonyl)-2-(2-chloroethyl)-2-(methylaminocarbonyl)hydrazine, an anti-neoplasia agent. One particularly preferred method uses methyl chloroformamide in a one-pot reaction at elevated temperatures to provide VNP40101M in high yield.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: September 27, 2011
    Assignee: Nanotherapeutics, Inc.
    Inventors: Xu Lin, Ivan King
  • Patent number: 7605137
    Abstract: This invention provides a method for treating tumor in a subject comprising administering to the subject an effective amount of: (1) VNP40101M, or its equivalent; and (2) a nucleoside, or a nucleoside analog. This invention also provides a method for inhibiting tumor cell growth comprising contacting the tumor cell with effective amounts of: (1) VNP40101M, or its equivalent; and (2) a nucleoside, or a nucleoside analog. The present invention relates to the treatment of cancer, comprising administering to a subject in need thereof an effective amount of VNP40101M in combination with a nucleoside.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: October 20, 2009
    Assignee: Vion Pharmaceuticals, Inc.
    Inventors: Ivan King, Mario Sznol, Michael Belcourt, Li-Mou Zheng
  • Publication number: 20090075945
    Abstract: Novel phosphate-bearing prodrugs of sulfonyl hydrazines have the formula presented below. Methods of treatment of cancer are claimed. The aforementioned prodrugs include enantiomers, stereoisomers and tautomers thereof, as well as pharmaceutically acceptable salts or solvates and metabolites from all stages. The aforementioned prodrugs are preferentially activated in hypoxic tumors and can be given either alone, or in combination with other anticancer agents or with phototheraphy or radiotherapy. where R is C1-C10 alkyl or haloalkyl; R? and R? are each independently C1-C10 alkyl; and R1 is C1-C10 alkyl, or a pharmaceutically acceptable salt, solvate, polymorph or metabolite thereof.
    Type: Application
    Filed: April 2, 2008
    Publication date: March 19, 2009
    Applicant: Vion Pharmaceuticals, Inc.
    Inventors: Xu Lin, Ivan King, Michael F. Belcourt, Terrence W. Doyle
  • Publication number: 20080299556
    Abstract: This invention provides a method to determine alkylguanyltransferase activity in a sample, comprising steps of placing the sample in an appropriate condition so that the AGT is functional; contacting the sample with an AGT Detector under conditions permitting the binding of AGT and AGTD to produce a signal; and measuring the signal, thereby determining the AGT activity in said sample. This invention provides different uses of this method.
    Type: Application
    Filed: September 18, 2007
    Publication date: December 4, 2008
    Applicant: VION Pharmaceuticals, Inc.
    Inventors: Ivan King, Xu Lin
  • Patent number: 7405317
    Abstract: Novel phosphate-bearing prodrugs of sulfonyl hydrazines have the formula presented below. Pharmaceutical compositions and uses thereof in the treatment of cancer are claimed. The aforementioned prodrugs include enantiomers, stereoisomers and tautomers thereof, as well as pharmaceutically acceptable salts or solvates and metabolites from all stages. The aforementioned prodrugs are preferentially activated in hypoxic tumors and can be given either alone, or in combination with other anticancer agents or with phototheraphy or radiotherapy. where R is C1-C10 alkyl or haloalkyl; R? and R? are each independently C1-C10 alkyl; R1 is CH3; and X is O; or a pharmaceutically acceptable salt, solvate, polymorph or metabolite thereof.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: July 29, 2008
    Assignee: Vion Pharmaceuticals Inc.
    Inventors: Xu Lin, Ivan King, Michael F. Belcourt, Terrence W. Doyle
  • Publication number: 20080076132
    Abstract: This invention provides a method to determine alkylguanyltransferase activity in a sample, comprising steps of placing the sample in an appropriate condition so that the AGT is functional; contacting the sample with an AGT Detector under conditions permitting the binding of AGT and AGTD to produce a signal; and measuring the signal, thereby determining the AGT activity in said sample. This invention provides different uses of this method.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 27, 2008
    Inventors: Ivan King, Xu Lin
  • Publication number: 20080025984
    Abstract: This invention provides a method for treating tumor in a subject comprising administering to the subject an effective amount of: (1) VNP40101M, or its equivalent; and (2) a nucleoside, or a nucleoside analog. This invention also provides a method for inhibiting tumor cell growth comprising contacting the tumor cell with effective amounts of: (1) VNP40101M, or its equivalent; and (2) a nucleoside, or a nucleoside analog. The present invention relates to the treatment of cancer, comprising administering to a subject in need thereof an effective amount of VNP40101M in combination with a nucleoside.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 31, 2008
    Inventors: Ivan King, Mario Sznol, Michael Belcourt, Li-Mou Zheng
  • Publication number: 20070298012
    Abstract: The present application discloses the preparation and use of attenuated tumor-targeted bacteria vectors for the delivery of one or more primary effector molecule(s) to the site of a solid tumor. The primary effector molecule(s) of the invention is used in the methods of the invention to treat a solid tumor cancer such as a carcinoma, melanoma, lymphoma, or sarcoma. The invention relates to the surprising discovery that effector molecules, which may be toxic when administered systemically to a host, can be delivered locally to tumors by attenuated tumor-targeted bacteria with reduced toxicity to the host. The application also discloses to the delivery of one or more optional effector molecule(s) (termed secondary effector molecules) which may be delivered by the attenuated tumor-targeted bacteria in conjunction with the primary effector molecule(s).
    Type: Application
    Filed: January 26, 2007
    Publication date: December 27, 2007
    Inventors: Ivan King, Li-Mou Zheng
  • Publication number: 20060205027
    Abstract: This invention provides a method to determine alkylguanyltransferase activity in a sample, comprising steps of placing the sample in an appropriate condition so that the AGT is functional; contacting the sample with an AGT Detector under conditions permitting the binding of AGT and AGTD to produce a signal; and measuring the signal, thereby determining the AGT activity in said sample. This invention provides different uses of this method.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 14, 2006
    Inventors: Ivan King, Xu Lin
  • Publication number: 20060089332
    Abstract: Novel phosphate-bearing prodrugs of sulfonyl hydrazines have the formulas I, II, III and IV. Pharmaceutical compositions and uses thereof in the treatment of cancer are claimed. The aforementioned prodrugs include enantiomers, stereoisomers and tautomers thereof, as well as pharmaceutically acceptable salts or solvates and metabolites from all stages. The aforementioned prodrugs are preferentially activated in hypoxic tumors and can be given either alone, or in combination with other anticancer agents or with phototheraphy or radiotherapy.
    Type: Application
    Filed: September 21, 2005
    Publication date: April 27, 2006
    Inventors: Xu Lin, Ivan King, Michael Belcourt, Terrence Doyle
  • Publication number: 20050261251
    Abstract: The present invention relates to methods of treating viral or fungal infections using 3-aminopyridine-2-carboxyaldehyde thiosemicarbazone (3-AP) and 3-amino-4-methylpyridine-2-carboxaldehyde thiosemicarbazone (3-AMP) and its prodrug forms and to pharmaceutical compositions comprising these compounds.
    Type: Application
    Filed: March 30, 2005
    Publication date: November 24, 2005
    Applicants: Vion Pharmaceuticals, Inc., Yale University
    Inventors: Ivan King, Terrance Doyle, Mario Sznol, Alan Sartorelli, Yung-chi Cheng
  • Publication number: 20050249706
    Abstract: The present application discloses the preparation and use of attenuated tumor-targeted bacteria vectors for the delivery of one or more primary effector molecule(s) to the site of a solid tumor. The primary effector molecule(s) of the invention is used in the methods of the invention to treat a solid tumor cancer such as a carcinoma, melanoma, lymphoma, or sarcoma. The invention relates to the surprising discovery that effector molecules, which may be toxic when administered systemically to a host, can be delivered locally to tumors by attenuated tumor-targeted bacteria with reduced toxicity to the host. The application also discloses to the delivery of one or more optional effector molecule(s) (termed secondary effector molecules) which may be delivered by the attenuated tumor-targeted bacteria in conjunction with the primary effector molecule(s).
    Type: Application
    Filed: March 17, 2005
    Publication date: November 10, 2005
    Inventors: David Bermudes, Ivan King, Caroline Clairmont, Stanley Lin, Michael Belcourt
  • Publication number: 20050043244
    Abstract: The present invention relates to compounds according to the structure (I): Where R is —CH3 or —CH2CH2Cl; R? is C1-C7 alkyl or —CH2CH2Cl; R2 or R4 is OP03H2, N02, OCO(Glu-OH), NHCO(Glu-OH), NHR7 and unassigned groups of R2, R3, R4, R5 and R6 are, independently, H, F, Cl, Br, I, OH, OP03H2, OCH3, CF3, OCF3, NO2, CN, SO2CH3, SO2CF3, COCH3, COOCH3, SCH3, SFs, NH2, NHR7, N(CH3)2, OPO3H2, or a C1-C7 alkyl group with the proviso that when any two of unassigned groups of R2, R3, R4, R5 or R6 are other than H, the other two of unassigned groups of R2, R3, R4, R5 or R6 are H. R7 is H or polyglutamyl as described. Phosphoric acid and glutamic acid can be a free acid or pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: September 27, 2004
    Publication date: February 24, 2005
    Applicant: VION PHARMACEUTICALS, INC.
    Inventors: Xu Lin, Terrence Doyle, Ivan King
  • Patent number: 6855695
    Abstract: The present invention relates to compounds according to the structure (I): Where R is —CH3 or —CH2CH2Cl; R? is C1-C7 alkyl or —CH2CH2Cl; R2 or R4 is OPO3H2, NO2, OCO(Glu-OH), NHCO(Glu-OH), NHR7 and unassigned groups of R2, R3, R4, R5 and R6 are, independently H, F, Cl, Br, I, OH, OPO3H2, OCH3, CF3, OCF3, NO2, CN, SO2CH3, SO2CF3, COCH3, COOCH3, SCH3, SF5, NH2, NHR7, N(CH3)2, OPO3H2, or a C1-C7 alkyl group with the proviso that when any two of unassigned groups of R2, R3, R4, R5 or R6 are other than H, the other two of unassigned groups of R2, R3, R4, R5 or R6 are H. R7 is H or polyglutamyl as described. Phosphoric acid and glutamic acid can be a free acid or pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: February 15, 2005
    Assignee: Vion Pharmaceuticals, Inc.
    Inventors: Xu Lin, Terrence W. Doyle, Ivan King
  • Publication number: 20040254103
    Abstract: The present invention relates to compounds according to the structure (I): 1
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Inventors: Xu Lin, Terrence W. Doyle, Ivan King