Patents Represented by Attorney Kenneth F. Mitchell
  • Patent number: 6815447
    Abstract: Compounds useful for the treatment of pain in accord with the following structural diagram, wherein R1, R2 and R3 are any of a number of groups as defined in the specification and pharmaceutical compositions and methods of treatment utilising such compounds.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: November 9, 2004
    Assignee: Astrazeneca AB
    Inventors: Bipinchandra Chaudhari, Marc Chapdelaine, Greg Hostetler, Lucius Kemp, John McCauley
  • Patent number: 6787547
    Abstract: A compound, 7-chloro-4-hydroxy-2-(2-chloro-4-methylphenyl)-1,2,5,10-tetrahydropyridazino[4,5-b]quinoline-1,10-dione, pharmaceutically-acceptable salts thereof, a method for treating pain comprising administration of a pain-ameliorating effective amount of the compound and pharmaceutical compositions containing the compound.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: September 7, 2004
    Assignee: Astrazeneca AB
    Inventors: Thomas Michael Bare, Dean Gordon Brown, Megan Murphy, Rebecca Ann Urbanek, Wenhua Xiao
  • Patent number: 6787562
    Abstract: Compounds of the formula I; useful for the treatment of pain wherein A, Z, B, R1, X and D are as defined in the specification, methods of making such compounds, methods of using such compounds and pharmaceutical compositions containing such compounds.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 7, 2004
    Assignee: Zeneca Ltd.
    Inventors: Gloria Anne Breault, John Oldfield, Howard Tucker, Peter Warner
  • Patent number: 6756398
    Abstract: Compounds of Formula I wherein R1a, R1b, R2b, R3b, R3a, R2a, B1, B2, Z, A2 and A1 are as defined in the specification, enantiomers thereof, pharmaceutically-acceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, especially for treatment of conditions associated with reductions in nicotinic transmission. Compounds of the invention enhance the efficacy of agonists at nicotinic receptors.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: June 29, 2004
    Assignee: Astrazeneca AB
    Inventors: Michael Balestra, David Gurley, James Rosamond
  • Patent number: 6750242
    Abstract: Compounds of Formula I wherein R1, R2, R3 and R4 are as defined in the specification, enantiomers thereof, pharmaceutically acceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, especially for treatment of conditions associated with reductions in nicotinic transmission. The compounds of the invention enhance the efficacy of agonists at nicotinic receptors.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: June 15, 2004
    Assignee: AstraZeneca AB
    Inventors: David Gurley, Thomas Lanthorn, John Macor, James Rosamond
  • Patent number: 6737424
    Abstract: Alpha-substituted pyridazino-quinoline compounds of formula Ia useful for the treatment of strokes and neurodegenerative disorders: wherein R1 is selected from a variety of substituents including halogen, (C1-C4)alkyl and nitro; R2 is selected from cycloalkyl moieties of 5-7 carbon atoms and the groups R2′ and R2″ as defined in the specification, a dashed bond indicates a single or double bond, and R7 is selected from H and CO(C1-C3)alkyl.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: May 18, 2004
    Assignee: Zeneca Ltd.
    Inventors: Thomas Michael Bare, James Roy Empfield, Janet Marie Forst, Keith John Herzog, Richard Bruce Sparks
  • Patent number: 6730675
    Abstract: Compounds according to structural diagram I are disclosed; wherein R1, A and D are as defined in the specification. Also disclosed are methods for treating pain comprising administration of a pain-ameliorating effective amount of a compound in accord with structural diagram I and pharmaceutical compositions comprising a pain-ameliorating effective amount of a compound in accord with structural diagram I.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: May 4, 2004
    Assignee: AstraZeneca AB
    Inventors: Megan Murphy, Rebecca Ann Urbanek, Wenhua Xiao, Gary Banks Steelman, Dean Gordon Brown, Thomas Michael Bare
  • Patent number: 6706878
    Abstract: A compound of formula wherein n, m, p, X, Y, W, A, G and D are as defined in the specification, enantiomers thereof, pharmaceutically acceptable salts thereof, processes for preparing them, composition containing them, and their use in therapy, especially in the treatment or prophylaxis of psychotic disorders and intellectual impairment disorders.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: March 16, 2004
    Assignee: Astrazeneca AB
    Inventors: Eifion Phillips, Robert Mack, John Macor, Simon Semus
  • Patent number: 6703502
    Abstract: A compound of formula wherein n is 0 or 1; m is 0 or 1; p is 0 or 1; X is oxygen or sulfur; Y is CH, N or NO; W is oxygen, H2 or F2; A is N or C(R2); G is N or C(R3); D is N or C(R4); with the proviso that no more than one of A, G, and D is nitrogen, but at least one of Y, A, G, and D is nitrogen or NO; R1 is hydrogen or C1 to C4 alkyl; R2, R3, and R4 are independently hydrogen, halogen, C1, C4 alkyl, C2, C4 alkenyl, C2-C4 alkynyl, aryl, heteroaryl, OH, OC1, C4 alkyl, CO2R1, —CN, —NO2, —NR5R6, —CF3, —OSO2CF3 or R2 and R3, or R3 and R4, respectively, may together form another six membered aromatic or heteroaromatic ring sharing A and G, or G and D, respectively, containing between zero and two nitrogen atoms, and substituted with one to two of the following substituents: independently hydrogen, halogen, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl, aryl, heteroaryl, OH, OC1-C4 alkyl, CO2R1, —CN, —NO2, —NR5R6, —CF3, —OSO2CF3; R5 and
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: March 9, 2004
    Assignee: AstraZeneca AB
    Inventors: Eifion Phillips, Robert Mack, John Macor, Simon Semus
  • Patent number: 6683090
    Abstract: Compounds of the general formula I wherein A represents: D represents oxygen, or sulfur and R1, R2 and R3 are as defined in the specification, enantiomers thereof, pharmaceutically-acceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, especially in the treatment or prophylaxis of psychotic disorders and intellectual impairment disorders.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: January 27, 2004
    Assignee: Astrazeneca AB
    Inventors: Michael Balestra, George Mullen, Eifion Phillips, Richard Schmiesing
  • Patent number: 6642246
    Abstract: Compounds of formula I wherein A represents: and R, R1, R2, R3 and R4 are as defined in the specification, pharmaceutically-cceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, especially in the treatment or prophylaxis of psychotic disorders and intellectual impairment disorders.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: November 4, 2003
    Assignee: Astrazeneca AB
    Inventor: Richard Schmiesing
  • Patent number: 6586432
    Abstract: Compounds having the general formula R1R2N—CH2CH2—CHAr1—CH2—NR3—CO—R4   (I) wherein R1, R2, R3, R4 and Ar are as defined in the specification, methods of making such compounds, methods of using such compounds for the treatment of diseases and pharmaceutical compositions comprising such compounds.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: July 1, 2003
    Assignee: Astrazenela AB
    Inventor: Peter Robert Bernstein
  • Patent number: 6569865
    Abstract: A compound having the formula: pharmaceutically-acceptable salts thereof, compositions containing them and uses thereof in therapy where activation of the &agr;7 nicotinic receptor is beneficial.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: May 27, 2003
    Assignee: Astrazeneca AB
    Inventor: Phillips Eifion
  • Patent number: 6500818
    Abstract: Compounds having the following formula wherein L, M, R2, R3, R4, R5, R6, R7, X1 and X2 are as defined in the specification, pharmaceutically-acceptable salt thereof, useful for treating depression, anxiety, asthma, rheumatoid arthritis, Alzheimer's disease, cancer, schizophrenia, oedema, allergic rhinitis, inflammation, pain, gastrointestinal-hypermotility, emesis, Huntington's disease, psychoses, hypertension, migraine, bladder hypermotility, or urticaria, compositions including such compounds and processes for making such compounds.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: December 31, 2002
    Assignee: Astrazeneca AB
    Inventors: Peter Robert Bernstein, Robert Frank Dedinas, Cyrus John Ohnmacht, Keith Russell
  • Patent number: 6476077
    Abstract: A compound having the general formula (I): R1R2N—CH2CH2—CHAr1—CH2—NR3—CO—R4 wherein: R1 is hydrogen, C1-6 alkyl, C2-6 alkenyl, aryl, C1-6 alkanoyl C1-6 alkoxycarbonyl or arylcarbonyl; any of such groups being optionally substituted; R2 is hydrogen or C1-6 alkyl; or R1 or R2 are joined to form an optionally substituted morpholino ring; Ar1 is phenyl mono- or di-substituted by halo; R3 is hydrogen or C1-6 alkyl; R4 is optionally substituted naphth-1-yl; or pharmaceutically acceptable salts thereof. These compounds antagonize the pharmacological actions of the endogenous neuropeptide tachykinins, particularly the neurokinin 1 (NK1) receptor.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: November 5, 2002
    Assignee: Astrazeneca AB
    Inventor: Peter Robert Bernstein
  • Patent number: 6444809
    Abstract: Compounds of formula I wherein G, J, L, M, m and D have any of the meanings given in the specification, their N-oxides, and their pharmaceutically acceptable salts are nonpeptide antagonists of neurokinin A and useful for the treatment of asthma, etc. Also disclosed are pharmaceutical compositions, processes for preparing the compounds of formula I and intermediates.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 3, 2002
    Assignee: Zeneca Limited
    Inventor: Scott Carson Miller
  • Patent number: 6423731
    Abstract: A method for the prophylaxis or treatment of conditions for which 5-HT1-like agonists are indicated comprising the administration of therapeutically-effective amount of compounds of formula (I) wherein A, W, Z and n are as defined in the specification.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: July 23, 2002
    Assignee: Zeneca Limited
    Inventors: Robert John Blade, Yih Sang Pang, David Lawrence Selwood
  • Patent number: 6417183
    Abstract: This invention provides substituted 1,2,3,4-tetrahydronaphthalene [3H]-emopamil binding site inhibitors useful in the treatment of neurological disorders. Such inhibitors are compounds of formula (I) wherein R, R1, m, R2 and n are as defined in the specification.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: July 9, 2002
    Assignee: Astrazenela UK Limited
    Inventors: Richard A Keith, Edward J Warawa, Thomas R Simpson
  • Patent number: 6407093
    Abstract: Emopamil inhibitors according to formula (I): wherein R, R1, m, R2 and n are as defined in the specification, useful in the treatment of neurological disorders, are disclosed. Also disclosed are pharmaceutical compositions containing the compounds, methods for using the compounds and methods for making the compounds.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 18, 2002
    Assignee: Astrazeneca UK Limited
    Inventor: Edward J Warawa
  • Patent number: 6403601
    Abstract: Compounds of formula (I), wherein R2 is a 5,6,7,8-tetrahydronaphth-1-yl group which may be substituted (the remaining groups defined herein), and pharmaceutical compositions containing the compounds and methods of using the compounds in the treatment of a condition where antagonism of the NK1 and/or NK2 receptors is beneficial.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: June 11, 2002
    Assignee: Astrazeneca AB
    Inventor: Cyrus John Ohnmacht