Patents by Inventor Bengt Langstrom

Bengt Langstrom 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).

  • Publication number: 20100256331
    Abstract: The present invention relates to a method of producing radiolabelled gallium complexes at ambient temperature that could be used as diagnostic agents, e.g. for positron emission tomography (PET) imaging.
    Type: Application
    Filed: August 29, 2007
    Publication date: October 7, 2010
    Applicant: GE Healthcare Limited
    Inventors: Irina Velikyan, Bengt Langstrom
  • Publication number: 20100234611
    Abstract: The invention relates to a process for preparation of a compound of formula (I): R1 is selected from C1-6alkyl, C2-6alkenyl, and C2-6alkynyl; which comprises: (i) reaction with fluoride, suitably [18F]fluoride, of a corresponding compound of formula (II): wherein R2 is selected from hydrogen, C1-10alkyl, C1-10haloalkyl, C6-14aryl, C6-14arylalkyl, —(CH2CH2O)q—CH3 wherein q is an integer of from 1 to 10; R1 is as defined for the compound of formula (I); and R3 is a leaving group. Certain novel precursors of formula (II) and radiopharmaceutical kits containing such precursors are also claimed.
    Type: Application
    Filed: August 11, 2006
    Publication date: September 16, 2010
    Applicants: GE HEALTHCARE LIMITED, GE HEALTHCARE AS
    Inventors: Anthony Eamon Storey, Clare Louise Jones, Denis Raymond Christophe Bouvet, Nicolas Lasbistes, Steven Michael Fairway, Lorenzo Williams, Alexander Mark Gibson, Robert James Nairne, Farhad Karimi, Bengt Langstrom
  • Publication number: 20100233082
    Abstract: The invention relates to new peptide-based compounds for use as diagnostic imaging agents or as therapeutic agents wherein the agents comprise targeting vectors which bind to integrin receptors.
    Type: Application
    Filed: August 28, 2007
    Publication date: September 16, 2010
    Inventors: Bengt Langstrom, Irina Velikyan, Mats Bergstrom, Orjan Lindhe
  • Publication number: 20100228060
    Abstract: The present invention describes using fluorous chemistry in n.c.a. nucleophilic aromatic 18F-fluorination reactions by using perfluoro-aryliodonium salts as a precursor for aromatic nucleophilic substitution using a [18F] F-anion to displace a suitable leaving group from an electron deficient benzene ring. The results showed that using perfluoro-aryliodonium salts as a precursor is a suitable leaving group for n. c. a. nucleophilic aromatic 18F-fluorination in synthesis. The PT-precursor seems to be quite stable. In an attempt to purify the crude 18F-labeled product using fluorous solid phase extraction (F-SPE), the radio labeled impurities decreased significantly. Thus, it is possible to use this PT methodology to simplify and speed up purification methods.
    Type: Application
    Filed: October 2, 2008
    Publication date: September 9, 2010
    Inventors: Bengt Langstrom, Farhad Karimi
  • Publication number: 20100158804
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with alcohols or water treated by photosensitizers are provided. The resultant carbon-isotope labeled esters and acids, and pharmaceutical acceptable salts and solvates are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits and method for PET studies are also provided.
    Type: Application
    Filed: March 2, 2010
    Publication date: June 24, 2010
    Applicant: GE HEALTHCARE LIMITED
    Inventors: BENGT LANGSTROM, OLEKSIY ITSENKO
  • Publication number: 20100150835
    Abstract: The present invention discloses the reactivity of ponytail (“PT”) sulfonates as leaving groups in nucleophilic fluorination reactions. The results showed that using a pentafluorobenzenesulfonate precursor is a suitable leaving group for n. c. a. nucleophilic 18F-fluorination in synthesis of [18F]fluoromethyl benzene, wherein this is a suitable leaving group for 18F-labeling with moderate reactivity. The PT-precursor seems to be quite stable. In an attempt to purify the crude 18F-labeled product using fluorous solid phase extraction (F-SPE), the radio labeled impurities decreased significantly. This provides an opportunity for utilizing PT methodology in both simple and fast purification methods.
    Type: Application
    Filed: February 26, 2008
    Publication date: June 17, 2010
    Inventors: Bengt Langstrom, Farhad Karimi, Elisabeth Blom
  • Publication number: 20100063298
    Abstract: A method of preparing novel [11C]-labeled benzophenone/bezoxazole analogues is provided. The present invention also provides novel [11C]-labeled benzophenone/bezoxazole analogues prepared from the GMP synthesis method. Kit claims for preparing novel [11C]-labeled benzophenone/bezoxazole analogues and a method of use thereof are also provided.
    Type: Application
    Filed: May 21, 2007
    Publication date: March 11, 2010
    Inventors: Farhad Karimi, Bengt Langstrom
  • Publication number: 20100061931
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with alcohols pretreated by a base are provided. The resultant carbon-isotope labeled esters are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Application
    Filed: November 19, 2009
    Publication date: March 11, 2010
    Inventors: Bengt Langstrom, Oleksiy Itsenko, Tor Kihlberg
  • Patent number: 7667011
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with water pretreated by a base are provided. The resultant carbon-isotope labeled acids are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: February 23, 2010
    Inventors: Bengt Langstrom, Oleksiy Itsenko
  • Patent number: 7659317
    Abstract: Methods and reagents for labeling synthesis of organohalides by transition metal mediated carbonylation reactions using carbon-isotope labeled carbon monoxide are provided. The resultant carbon-isotope labeled organohalides are useful as radiopharmaceuticals, especially for use as precursors in Positron Emission Tomography (PET). Associated PET tracers and kits for PET studies are also provided.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: February 9, 2010
    Assignee: GE Healthcare Limited
    Inventors: Jonas Eriksson, Bengt Langstrom, Gunnar Antoni
  • Publication number: 20090297445
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using weakly nucleophilic amines and alkyl/aryl iodides are provided. The resultant carbon-isotope labeled amides are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 3, 2009
    Inventors: Oleksiy Itsenko, Tor Kihlberg, Bengt Langstrom
  • Publication number: 20090297447
    Abstract: Radioactively labeled derivatives of (R)-3-(1-phenylethyl)-3H-imidazole-4-carboxylic acid esters and one-step methods for preparing these compounds are provided. The radioactively labelled compounds, and pharmaceutical acceptable salts and solvates are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET) for the diagnosis of adrenal cortical masses such as incidentaloma, adenoma, primary and metastatic cortical carcinoma. Associated kits and method for PET studies are also provided.
    Type: Application
    Filed: June 7, 2007
    Publication date: December 3, 2009
    Inventors: Bengt Langstrom, Farhad Karimi, Elisabeth Blom, Maria Erlandsson
  • Patent number: 7626052
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with alcohols pretreated by a base are provided. The resultant carbon-isotope labeled esters are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 1, 2009
    Assignee: GE Healthcare Limited
    Inventors: Bengt Langstrom, Oleksiy Itsenko, Tor Kihlberg
  • Publication number: 20090285756
    Abstract: The present invention relates to new 11C/18F-labeled inhibitor compounds for over-expressed GSK-3 prepared from the GMP synthesis method. The present invention provides novel 11C/18F inhibitor compounds for over-expressed GSK-3 that are suitable for use as an in vivo imaging agent. A pharmaceutical comprising the compound and a kit for the preparation of the pharmaceutical are also provided.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 19, 2009
    Inventors: Farhad Karimi, Bengt Langstrom
  • Publication number: 20090220420
    Abstract: The present invention provides novel tetracyclic indole compounds of Formula (I) either as in vivo imaging agents or as therapeutic agents. A method for the preparation of the in vivo imaging agent compound is also provided by the invention, as well as a precursor for use in said method. Pharmaceutical compositions comprising the compounds of the invention are additionally provided. Where the pharmaceutical composition comprises a compound suitable for in vivo imaging, a kit is provided for the preparation of the pharmaceutical composition. In a further aspect, use of the compound for in vivo imaging or treatment of conditions associated with PBR is provided.
    Type: Application
    Filed: November 20, 2006
    Publication date: September 3, 2009
    Inventors: Erik Arstad, Ian Wilson, Sajinder Kaur Luthra, Frank Brady, Bengt Langstrom, Farhad Karimi, Edward George Robins, Bo Shan
  • Publication number: 20090208414
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with carbanion precursors pretreated by a base are provided. The resultant carbon-isotope labeled ketones, and pharmaceutical acceptable salts and solvates are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits and method for PET studies are also provided.
    Type: Application
    Filed: August 29, 2006
    Publication date: August 20, 2009
    Inventors: Bengt Langstrom, Oleksiy Itsenko, Tor Kihlberg
  • Publication number: 20090203909
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using amines and alkyl/aryl iodides are provided. The resultant carbon-isotope labeled amides are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Application
    Filed: April 14, 2009
    Publication date: August 13, 2009
    Inventors: Tor Kihlberg, Oleksiy Itsenko, Tommy Ferm, Bengt Langstrom
  • Patent number: 7553942
    Abstract: Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using weakly nucleophilic amines and alkyl/aryl iodides are provided. The resultant carbon-isotope labeled amides are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: June 30, 2009
    Assignee: GE Healthcare Limited
    Inventors: Oleksiy Itsenko, Tor Kihlberg, Bengt Langstrom
  • Publication number: 20090142264
    Abstract: The present invention provides novel 18F-labeled phenoxyphenyl N-benzyl alkanamid derivative compounds that are suitable for use as an in vivo imaging agent. A pharmaceutical comprising the compound and a kit for the preparation of the pharmaceutical are also provided. Methods of use and use of claims for novel 18F-labeled phenoxyphenyl N-benzyl alkanamid derivative compounds are provided as well.
    Type: Application
    Filed: December 27, 2006
    Publication date: June 4, 2009
    Inventors: Bengt Langstrom, Farhad Karimi
  • Publication number: 20090104087
    Abstract: A method of producing [18F]F2 from [18F] fluoride through a plasma induced scrambling procedure is provided. The present invention also provides an apparatus for preparing [18F]F2 from [18F] fluoride in a plasma induced scrambling procedure. Kit claims for preparing [18F]F2 from [18F] fluoride in a plasma induced scrambling procedure as well as method of use and use of claims for preparing [18F]F2 from [18F] fluoride through a plasma induced scrambling procedure are also provided.
    Type: Application
    Filed: April 24, 2007
    Publication date: April 23, 2009
    Inventors: Bengt Langstrom, Johan Ulin