Patents by Inventor Alan John Pettman

Alan John Pettman 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: 9499520
    Abstract: The present invention provides a process for preparing a compound of formula: (Formula XI and XII) (XI) (XII) wherein X, Y, Z, A, B and E are as defined herein, by reacting a compound of formula: (Formula XIII) (XIII) with a compound of formula: (Formula XIV and XV) (XIV) (XV) respectively, in the presence of a transition metal catalyst, a ligand suitable for use with 15 the catalyst and a reducing agent. The invention also provides novel intermediates.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: November 22, 2016
    Assignee: Pfizer Ireland Pharmaceuticals
    Inventors: Adam James Musgrave Burrell, Padraig Mary O'Neill, Alan John Pettman
  • Publication number: 20160229842
    Abstract: The present invention provides a process for preparing a compound of formula: (Formula XI and XII) (XI) (XII) wherein X, Y, Z, A, B and E are as defined herein, by reacting a compound of formula: (Formula XIII) (XIII) with a compound of formula: (Formula XIV and XV) (XIV) (XV) respectively, in the presence of a transition metal catalyst, a ligand suitable for use with 15 the catalyst and a reducing agent. The invention also provides novel intermediates.
    Type: Application
    Filed: April 20, 2016
    Publication date: August 11, 2016
    Inventors: Adam James Musgrave Burrell, Padraig Mary O'Neill, Alan John Pettman
  • Patent number: 9388167
    Abstract: The present invention provides a process for preparing a compound of formula: (Formula XI and XII) (XI) (XII) wherein X, Y, Z, A, B and E are as defined herein, by reacting a compound of formula: (Formula XIII) (XIII) with a compound of formula: (Formula XIV and XV) (XIV) (XV) respectively, in the presence of a transition metal catalyst, a ligand suitable for use with 15 the catalyst and a reducing agent. The invention also provides novel intermediates.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: July 12, 2016
    Assignee: Pfizer Ireland Pharmaceuticals
    Inventors: Adam James Musgrave Burrell, Padraig Mary O'Neill, Alan John Pettman
  • Publication number: 20150239867
    Abstract: The present invention provides a process for preparing a compound of formula: (Formula XI and XII) (XI) (XII) wherein X, Y, Z, A, B and E are as defined herein, by reacting a compound of formula: (Formula XIII) (XIII) with a compound of formula: (Formula XIV and XV) (XIV) (XV) respectively, in the presence of a transition metal catalyst, a ligand suitable for use with 15 the catalyst and a reducing agent. The invention also provides novel intermediates.
    Type: Application
    Filed: October 8, 2013
    Publication date: August 27, 2015
    Applicant: Pfizer Ireland Pharmaceuticals
    Inventors: Adam James Musgrave Burrell, Padraig Mary O'Neill, Alan John Pettman
  • Patent number: 8067594
    Abstract: The invention provides a process for producing a compound of formula (I), wherein Y is selected from the group consisting of CH3, CH2OH, CH2CH2OH, CH2Br and Br; comprising the steps of: (i) reacting a compound of formula (II), wherein OX represents hydroxy or O?M+, in which M+ is a cation selected from Li+, Na+ and K+, and Y is as defined above; with trans-cinnamaldehyde (III), in the presence of a secondary amine compound; then (ii) treating the product of the preceding step with acid to afford the compound of formula (I). The above process may also be used in the production of tolterodine and fesoterodine, which are useful in the treatment of overactive bladder.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: November 29, 2011
    Assignee: Pfizer Inc.
    Inventors: Jens Bertil Ahman, Barry Richard Dillon, Alan John Pettman
  • Publication number: 20090306384
    Abstract: The invention provides a process for producing a compound of formula (I), wherein Y is selected from the group consisting of CH3, CH2OH, CH2CH2OH, CH2Br and Br; comprising the steps of: (i) reacting a compound of formula (II), wherein OX represents hydroxy or O?M+, in which M+ is a cation selected from Li+, Na+ and K+, and Y is as defined above; with trans-cinnamaldehyde (III), in the presence of a secondary amine compound; then (ii) treating the product of the preceding step with acid to afford the compound of formula (I). The above process may also be used in the production of tolterodine and fesoterodine, which are useful in the treatment of overactive bladder.
    Type: Application
    Filed: May 21, 2007
    Publication date: December 10, 2009
    Inventors: Jens Bertil Ahman, Barry Richard Dillon, Alan John Pettman
  • Publication number: 20080193988
    Abstract: The invention relates to a process for the preparation of compounds of formula (I) wherein Q1 is a group selected from formulae (II) & (III) and a group *-NR6-Q2-A or, if appropriate, their pharmaceutically acceptable salts and/or isomers, tautomers, solvates or isotopic variations thereof, as well as intermediates used in said process.
    Type: Application
    Filed: July 10, 2006
    Publication date: August 14, 2008
    Inventors: Iain Robert Gladwell, Pieter David De Koning, Ian Brian Moses, Alan John Pettman, Nicholas Murray Thomson
  • Patent number: 7193083
    Abstract: The invention provides a process for the preparation of a compound of the formula: or an acid addition or base salt thereof, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and trifluoromethyl; R1 is C1–C6 alkyl; and “Het” is pyrimidinyl optionally substituted by 1 to 3 substituents each independently selected from C1–C4 alkyl, C1–C4 alkoxy, halo, oxo, benzyl and benzyloxy, comprising reaction of a compound of the formula: wherein R is as previously defined for a compound of the formula (I), with a compound of the formula: wherein R1 and “Het” are as previously defined for a compound of the formula (I) and X is chloro, bromo or iodo, in the presence of zinc, iodine and/or a Lewis acid and an aprotic organic solvent: said process being optionally followed by conversion of the compound of the formula (I) to an acid addition or base salt thereof.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: March 20, 2007
    Assignee: Pfizer, Inc.
    Inventors: Michael Butters, Alan John Pettman
  • Patent number: 7049444
    Abstract: Compounds of formula (I), their salts and prodrugs thereof, where the substituents are as defined herein are disclosed as opiate binding agents useful in the treatment of opiate-mediated conditions. Also described are processes for making such substances.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: May 23, 2006
    Assignee: Pfizer Inc.
    Inventors: Bernard Joseph Banks, Robert James Crook, Stephen Paul Gibson, Graham Lunn, Alan John Pettman
  • Patent number: 7026479
    Abstract: The invention provides a process for the production of a compound of formula (A), or a pharmaceutically acceptable salt or solvate thereof, wherein R1, R2, R3, and R4 are as defined herein.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: April 11, 2006
    Inventors: Lee Terence Boulton, Robert James Crook, Alan John Pettman, Robert Walton
  • Patent number: 7018818
    Abstract: The invention presents compounds of formula (I), where R represents H or a suitable carboxylic acid protecting group, which are intermediates in the preparation of therapeutic fused bicyclic amino acids.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: March 28, 2006
    Assignee: Pfizer Inc.
    Inventors: Iain Robert Gladwell, Alan John Pettman
  • Patent number: 6946555
    Abstract: The invention provides a process for the preparation of a compound of the formula: or an acid addition or base salt thereof, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and trifluoromethyl; R1 is C1-C6 alkyl; and “Het” is pyrimidinyl optionally substituted by 1 to 3 substituents each independently selected from C1-C4 alkyl, C1-C4 alkoxy, halo, oxo, benzyl and benzyloxy, comprising reaction of a compound of the formula: ?wherein R is as previously defined for a compound of the formula (I), with a compound of the formula: ?wherein R1 and “Het” are as previously defined for a compound of the formula (I) and X is chloro, bromo or iodo, in the presence of zinc, iodine and/or a Lewis acid and an aprotic organic solvent: said process being optionally followed by conversion of the compound of the formula (I) to an acid addition or base salt thereof.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: September 20, 2005
    Assignee: Pfizer Inc
    Inventors: Michael Butters, Alan John Pettman
  • Publication number: 20040138498
    Abstract: The invention presents compounds of formula (I), 1
    Type: Application
    Filed: October 2, 2003
    Publication date: July 15, 2004
    Inventors: Iain Robert Gladwell, Alan John Pettman
  • Patent number: 6737430
    Abstract: The present invention relates to a mutual prodrug of amlodipine and atorvastatin, pharmaceutically acceptable acid addition salts thereof, pharmaceutical compositions thereof and the use of said prodrug and its salts in the manufacture of medicaments for the treatment of atherosclerosis, angina pectoris, combined hypertension and hyperlipidaemia and the management of cardiac risk.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: May 18, 2004
    Assignee: Pfizer, Inc.
    Inventors: Robert James Crook, Alan John Pettman
  • Patent number: 6680334
    Abstract: The present invention relates to amlodipine free base in a crystalline form, to pharmaceutical formulations comprising such material, processes of manufacture and its use in therapy.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: January 20, 2004
    Assignee: Pfizer Inc
    Inventors: Alan Craig Bentham, Alan John Pettman, Keith Stephen Ruddock
  • Publication number: 20030181720
    Abstract: The invention provides a process for the preparation of a compound of the formula: 1
    Type: Application
    Filed: February 19, 2003
    Publication date: September 25, 2003
    Inventors: Michael Butters, Alan John Pettman, Julie Ann Harrison
  • Patent number: 6586594
    Abstract: A process for the preparation of a compound of the formula: or an acid addition or base salt thereof, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and trifluoromethyl; R1 is C1-C6 alkyl; and “Het” is pyrimidinyl optionally substituted by 1 to 3 substituents each independently selected from C1-C4 alkyl, C1-C4 alkoxy, halo, oxo, benzyl and benzyloxy, comprising reacting a compound of the formula: with a compound of the formula wherein X is chloro, bromo or iodo, the reaction taking place in the presence of zinc; at least one of iodine or a Lewis acid; and an aprotic organic solvent: optionally further reacting the resulting compound with an acid or base to form the corresponding acid addition or base salt thereof.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: July 1, 2003
    Assignee: Pfizer, Inc.
    Inventors: Michael Butters, Alan John Pettman, Julie Ann Harrison
  • Publication number: 20030119883
    Abstract: The present invention relates to amlodipine free base in a crystalline form, to pharmaceutical formulations comprising such material, processes of manufacture and its use in therapy.
    Type: Application
    Filed: August 20, 2002
    Publication date: June 26, 2003
    Applicant: Pfizer Inc.
    Inventors: Alan Craig Bentham, Alan John Pettman, Keith Stephen Ruddock
  • Publication number: 20030100753
    Abstract: The invention provides a process for the production of a compound of formula (A), or a pharmaceutically acceptable salt or solvate thereof, 1
    Type: Application
    Filed: July 19, 2002
    Publication date: May 29, 2003
    Applicant: Pfizer Inc.
    Inventors: Lee Terence Boulton, Robert James Crook, Alan John Pettman, Robert Walton
  • Publication number: 20030027848
    Abstract: The present invention is concerned with means for stabilizing amlodipine maleate to prevent the formation of unwanted Michael adduct and with stabilized pharmaceutical compositions obtained thereby.
    Type: Application
    Filed: June 13, 2002
    Publication date: February 6, 2003
    Inventors: Anne Billotte, Sharon Pavitt, Alan John Pettman, Zena Elizabeth Florence Smith