Patents by Inventor Frederick Hausheer

Frederick Hausheer 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: 7777060
    Abstract: Disclosed herein are novel platinum-based analogs possessing two nitrile substituent groups (bis-nitrile) covalently-bonded to the platinum. Also disclosed herein are the reaction schemes for the synthesis of said platinum complexes, as well as quantitative in vitro IC50 data.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 17, 2010
    Assignee: BioNumerik Pharmaceuticals, Inc.
    Inventors: Xinghai Chen, Pavankumar N. V. Petluru, Qiuli Huang, Kesavaram Narkunan, Frederick Hausheer
  • Patent number: 7687496
    Abstract: The novel C7-modified camptothecin analogs, and pharmaceutically-acceptable salts thereof, of the present invention: (i) possess potent antitumor activity (i.e., in nanomolar or subnanomolar concentrations) for inhibiting the growth of human and animal tumor cells in vitro; (ii) are potent inhibition of Topoisomerase I; (iii) lack of susceptibility to MDR/MRP drug resistance; (iv) require no metabolic drug activation: (v) lack glucuronidation of the A-ring or B-ring; (vi) reduce drug-binding affinity to plasma proteins; (vii) maintain lactone stability; (viii) maintain drug potency; and (ix) possess a low molecular weight (e.g., MW<600).
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: March 30, 2010
    Assignee: BioNumerik Pharmaceuticals, Inc.
    Inventors: Kesavaram Narkunan, Xinghai Chen, Harry Kochat, Frederick Hausheer
  • Patent number: 7687497
    Abstract: The novel C10-modified camptothecin analogs, and pharmaceutically-acceptable salts thereof, of the present invention: (i) possess potent antitumor activity (i.e., in nanomolar or subnanomolar concentrations) for inhibiting the growth of human and animal tumor cells in vitro; (ii) are potent inhibition of Topoisomerase I; (iii) lack of susceptibility to MDR/MRP drug resistance; (iv) require no metabolic drug activation: (v) lack glucuronidation of the A-ring or B-ring; (vi) reduce drug-binding affinity to plasma proteins; (vii) maintain lactone stability; (viii) maintain drug potency; and (ix) possess a low molecular weight (e.g., MW<600).
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: March 30, 2010
    Assignee: BioNumerik Pharmaceuticals, Inc.
    Inventors: Kesavaram Narkunan, Xinghai Chen, Harry Kochat, Frederick Hausheer
  • Publication number: 20090099166
    Abstract: The novel C10-modified camptothecin analogs, and pharmaceutically-acceptable salts thereof, of the present invention: (i) possess potent antitumor activity (i.e., in nanomolar or subnanomolar concentrations) for inhibiting the growth of human and animal tumor cells in vitro; (ii) are potent inhibition of Topoisomerase I; (iii) lack of susceptibility to MDR/MRP drug resistance; (iv) require no metabolic drug activation: (v) lack glucuronidation of the A-ring or B-ring; (vi) reduce drug-binding affinity to plasma proteins; (vii) maintain lactone stability; (viii) maintain drug potency; and (ix) possess a low molecular weight (e.g., MW<600).
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Inventors: Kesavaram Narkunan, Xinghai Chen, Harry Kochat, Frederick Hausheer
  • Publication number: 20090099224
    Abstract: The novel C7-modified camptothecin analogs, and pharmaceutically-acceptable salts thereof, of the present invention: (i) possess potent antitumor activity (i.e., in nanomolar or subnanomolar concentrations) for inhibiting the growth of human and animal tumor cells in vitro; (ii) are potent inhibition of Topoisomerase I; (iii) lack of susceptibility to MDR/MRP drug resistance; (iv) require no metabolic drug activation: (v) lack glucuronidation of the A-ring or B-ring; (vi) reduce drug-binding affinity to plasma proteins; (vii) maintain lactone stability; (viii) maintain drug potency; and (ix) possess a low molecular weight (e.g., MW<600).
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Inventors: Kesavaram Narkunan, Xinghai Chen, Harry Kochat, Frederick Hausheer
  • Publication number: 20080194680
    Abstract: Disclosed herein are novel platinum-based analogs possessing two nitrile substituent groups (bis-nitrile) covalently-bonded to the platinum. Also disclosed herein are the reaction schemes for the synthesis of said platinum complexes, as well as quantitative in vitro IC50 data.
    Type: Application
    Filed: October 30, 2007
    Publication date: August 14, 2008
    Inventors: Xinghai Chen, Pavankumar N.V. Petluru, Qiuli Huang, Kesavaram Narkunan, Frederick Hausheer
  • Publication number: 20070173485
    Abstract: Disclosed herein are novel platinum-based complexes possessing one nitrile substituent group (mononitrile) covalently-bonded to the platinum, one or more nitrogen donor ligands capable of forming hydrogen bonds with the bases in DNA or RNA and leaving groups (i.e., L1 and L2 )which can be hydrolyzed iii vivo to active species, which can then form coordinate adducts with DNA or RNA at the Guanine or Adenine bases thereof. Also disclosed herein are the reaction schemes for the synthesis of said platinum complexes, as well as methods of treatment of various types of cancer by the administration of a pharmaceutically-effective dose of said novel platinum complexes.
    Type: Application
    Filed: April 17, 2006
    Publication date: July 26, 2007
    Inventors: Zejun Xiao, Frederick Hausheer, Pavankumar Petluru
  • Publication number: 20070135519
    Abstract: Compositions and methods for reducing, preventing, mitigating, and/or delaying the onset of, attenuating the severity of, and/or hastening the resolution of, for example, one or more chemotherapy-associated toxicities in a subject receiving one or more chemotherapeutic agents.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 14, 2007
    Inventor: Frederick Hausheer
  • Publication number: 20070004697
    Abstract: Disclosed herein are novel platinum-based analogs with a single substituted imine ligand: R7RC?NR8, wherein the R7RC?NR8 functional group is covalently bonded to the platinum through nitrogen. The analogs also have nitrogen donor ligands capable of forming hydrogen bonds with the bases in DNA or RNA, and one or more leaving groups which can be displaced by water, hydroxide ions or other nucleophiles, which is thought to form active species in vivo, and then, form cross-linked complexes between nucleic acid strands, principally between purines in DNA (or RNA), i.e., at the Guanine or Adenine bases, thereof.
    Type: Application
    Filed: January 26, 2006
    Publication date: January 4, 2007
    Inventors: Frederick Hausheer, Zejun Xiao, Harry Kochat
  • Publication number: 20070004696
    Abstract: Disclosed herein are novel platinum-based analogs with a single substituted azole ligand: RN?NR7, wherein the RN?NR7 functional group is covalently bonded to the platinum through nitrogen of NR7. The analogs also have nitrogen donor ligands capable of forming hydrogen bonds with the bases in DNA or RNA, and one or more leaving groups which can be displaced by water, hydroxide ions or other nucleophiles, which is thought to form active species in vivo, and then, form cross-linked complexes between nucleic acid strands, principally between purines in DNA (or RNA), i.e., at the Guanine or Adenine bases, thereof.
    Type: Application
    Filed: January 26, 2006
    Publication date: January 4, 2007
    Inventors: Zejun Xiao, Harry Kochat, Frederick Hausheer
  • Publication number: 20070004798
    Abstract: Disclosed herein are novel platinum-based complexes possessing one nitrile substituent group (mononitrile) covalently-bonded to the platinum, one or more nitrogen donor ligands capable of forming hydrogen bonds with the bases in DNA or RNA and leaving groups (i.e., L1 and L2) which can be hydrolyzed in vivo to active species, which can then form coordinate adducts with DNA or RNA at the Guanine or Adenine bases thereof. Also disclosed herein are the reaction schemes for the synthesis of said platinum complexes, as well as methods of treatment of various types of cancer by the administration of a pharmaceutically-effective dose of said novel platinum complexes.
    Type: Application
    Filed: January 26, 2006
    Publication date: January 4, 2007
    Inventors: Zejun Xiao, Frederick Hausheer, Pavankumar Petluru
  • Publication number: 20060094692
    Abstract: This invention relates to pharmaceutically elegant formulations of highly lipophilic camptothecin derivatives.
    Type: Application
    Filed: October 28, 2004
    Publication date: May 4, 2006
    Inventors: Frederick Hausheer, Jianyan Wang, Harry Kochat
  • Publication number: 20060063744
    Abstract: This invention relates to a method of treating patients who are receiving dialysis treatments. The method includes administering to a patient in need of treatment an effective amount of a thiol or reducible disulfide compound according to the formula set forth in the specification.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 23, 2006
    Inventor: Frederick Hausheer
  • Publication number: 20060063742
    Abstract: A method of reducing the risks of lymphedema, particularly secondary lymphedema associated with surgery or radiotherapy is disclosed. The method of this invention includes administering effective amounts of specific sulfur-containing drug agents according to Formula I herein to a patient at risk of developing lymphedema.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 23, 2006
    Inventor: Frederick Hausheer
  • Publication number: 20050256055
    Abstract: Novel compositions and formulations are disclosed that have use as toxicity-reducing agents for various chemotherapeutic agents and as treatment for certain diseases and conditions. The compositions of matter are amino acid and peptide heteroconjugated disulfides of 2-mercaptoethane sulfonate sodium.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 17, 2005
    Inventors: Frederick Hausheer, Harry Kochat, Qiuli Huang
  • Publication number: 20040014730
    Abstract: This invention provides for pharmaceutical formulations of compounds that are useful as protective agents when administered to patients also receiving anti-infective drugs, such as antimicrobials, antifungals, or antivirals. The invention also includes methods of reducing the toxicity of various anti-infective agents by administering an effective amount of the protective agent to a patient receiving one or more anti-infective agents. The compounds that are useful as protective agents have either a sulfhydryl moiety or are reducible disulfides.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 22, 2004
    Inventor: Frederick Hausheer