Patents by Inventor Michael Butters

Michael Butters 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: 8227622
    Abstract: The invention relates to compounds of formula (X), and salts thereof, and their use as intermediates in improved manufacturing processes for the synthesis of pharmaceutical compound (I): X is ?O, ?N—OH or ?N—OC(O)Me; Y is hydrogen, PhS- or p-chlorophenylsulfanyl; Z is hydrogen or —CH2COOR1 wherein R1 is selected from hydrogen, optionally substituted hydrocarbyl and optionally substituted heterocyclyl.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: July 24, 2012
    Assignee: AstraZeneca AB
    Inventors: Debra Ainge, Eric Merifield, Colin Thomson, Michael Butters, Ravi Ramakrishnan, Ravi Naidu Rayapati, Parhalad Ray Sharma
  • Patent number: 8076481
    Abstract: A process for preparing pharmaceutically active compounds of formula (I) or a salt thereof wherein R1, n, m, R3, R6, X1, X2, X3 and X4 are as defined in the specification, is described. Novel intermediates are also described and claimed.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: December 13, 2011
    Assignee: AstraZeneca AB
    Inventors: Michael Butters, Jeffrey Crabb, Philip Hopes, Bharti Patel
  • Patent number: 8034932
    Abstract: A process for formation of a compound of formula (I) or a pharmaceutically acceptable salt thereof, (A chemical formula should be inserted here—please see paper copy enclosed herewith) I via a Heck reaction is described. Intermediates useful in the process and processes for making said intermediates are also described.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: October 11, 2011
    Assignee: AstraZeneca UK Limited
    Inventors: Michael Butters, Steven Robert Lenger, Paul Michael Murray, Evan William Snape
  • Publication number: 20110046394
    Abstract: The invention relates to compounds of formula (X), and salts thereof, and their use as intermediates in improved manufacturing processes for the synthesis of pharmaceutical compound (I): X is ?O, ?N—OH or ?N—OC(O)Me; Y is hydrogen, PhS- or p-chlorophenylsulfanyl; Z is hydrogen or —CH2COOR1 wherein R1 is selected from hydrogen, optionally substituted hydrocarbyl and optionally substituted heterocyclyl.
    Type: Application
    Filed: July 6, 2010
    Publication date: February 24, 2011
    Inventors: Debra Ainge, Eric Merifield, Colin Thomson, Michael Butters, Ravi Ramakrishnan, Ravi Naidu Rayapati, Parhalad Ray Sharma
  • Publication number: 20100228028
    Abstract: A process for the manufacture of a compound of formula (V), useful for making rosuvastatin, by a stereoselective aldol reaction is described. Novel intermediates and processes to make them are also described.
    Type: Application
    Filed: July 3, 2006
    Publication date: September 9, 2010
    Inventors: Michael Butters, David Kenneth Cox, Jeffrey Norman Crabb, Steven Robert Lenger, Paul Michael Murrray, Evan William Snape
  • Patent number: 7790883
    Abstract: A method for the preparation of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof; from a compound of the formula: (IV); wherein L represents a leaving group.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: September 7, 2010
    Assignee: AstraZeneca AB
    Inventors: Michael Butters, Richard Wisedale, Matthew James Welham, Colin Thompson, Andrew Watts
  • Publication number: 20100217000
    Abstract: A method for the preparation of a compound of formula (1) or a pharmaceutically acceptable salt or solvate thereof; from a compound of the formula: (IV); wherein L represents a leaving group.
    Type: Application
    Filed: December 15, 2009
    Publication date: August 26, 2010
    Inventors: Michael Butters, Richard Wisedale, Matthew James Welham, Colin Thomson, Andrew Watts
  • Publication number: 20100210841
    Abstract: A process for preparing pharmaceutically active compounds of formula (I) or a salt thereof wherein R1, n, m, R3, R6, X1, X2, X3 and X4 are as defined in the specification, is described. Novel intermediates are also described and claimed.
    Type: Application
    Filed: February 15, 2010
    Publication date: August 19, 2010
    Applicant: AstraZeneca AB
    Inventors: Michael Butters, Jeffrey Crabb, Philip Hopes, Bharti Patel
  • Publication number: 20090043097
    Abstract: A method for the preparation of a compound of formula (1) or a pharmaceutically acceptable salt or solvate thereof; from a compound of the formula: (IV); wherein L represents a leaving group.
    Type: Application
    Filed: May 15, 2008
    Publication date: February 12, 2009
    Inventors: Colin Thomson, Andrew Watts, Michael Butters, Matthew James Welham, Richard Wisedale
  • Publication number: 20080207903
    Abstract: A process for formation of a compound of formula (I) or a pharmaceutically acceptable salt thereof, (A chemical formula should be inserted here—please see paper copy enclosed herewith) I via a Heck reaction is described. Intermediates useful in the process and processes for making said intermediates are also described.
    Type: Application
    Filed: December 22, 2005
    Publication date: August 28, 2008
    Inventors: Michael Butters, Steven Robert Lenger, Paul Michael Murray, Evan William Snape
  • Patent number: 7307174
    Abstract: Novel Process and Intermediates. A process for preparing a compound of formula (I) where R4 and R5 are as defined in the specification; and R6 is hydrogen or a protecting group, which process comprises cyclisation of a compound of formula (II) where R4 and R5 and R6 are as defined in relation to formula (I), and R7 is nitrogen protecting group, and removing the group R7, and thereafter if desired, removing any protecting group R6.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: December 11, 2007
    Assignee: AstraZeneca AB
    Inventors: Michael Butters, Paul Schofield, Andrew Stocker
  • Publication number: 20070282103
    Abstract: A method for the preparation of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof; from a compound of the formula: (IV); wherein L represents a leaving group.
    Type: Application
    Filed: December 2, 2004
    Publication date: December 6, 2007
    Inventors: Michael Butters, Richard Wisedale, Mathew Welham, Colin Thomson, Andrew Watts
  • 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
  • Publication number: 20050272938
    Abstract: Novel Process and Intermediates. A process for preparing a compound of formula (I) where R4 and R5 are as defined in the specification; and R6 is hydrogen or a protecting group, which process comprises cyclisation of a compound of formula (II) where R4 and R5 and R6 are as defined in relation to formula (I), and R7 is nitrogen protecting group, and removing the group R7, and thereafter if desired, removing any protecting group R6. Novel intermediates and the use of these in the formation of pharmaceutical compounds is also described and claimed.
    Type: Application
    Filed: September 29, 2003
    Publication date: December 8, 2005
    Inventors: Michael Butters, Paul Schofield, Andrew Stocker
  • Publication number: 20050272747
    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: Application
    Filed: May 2, 2005
    Publication date: December 8, 2005
    Inventors: Michael Butters, Alan 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
  • Patent number: 6645979
    Abstract: The invention described herein relates to a process for the preparation of (7-(3-carboxyphenyl)-4-chloroisoquinolin-1-yl)guanidine (I), intermediates thereto and new forms and formulations thereof, including the zwitterion monohydrate of (I), suitable for pharmaceutical use.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: November 11, 2003
    Assignee: Pfizer Inc.
    Inventors: Anne Bruckner, Michael Butters, Paul Vincent Fish, Michael Paul Fitzgerald, Julie Ann Macrae, Trevor Jack Newbury, Richard Anthony Storey
  • 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: 20020077336
    Abstract: The invention described herein relates to a process for the preparation of (7-(3-carboxyphenyl)-4-chloroisoquinolin-1-yl)guanidine (I), intermediates thereto and new forms and formulations thereof, including the zwitterion monohydrate of (I), suitable for pharmaceutical use.
    Type: Application
    Filed: October 29, 2001
    Publication date: June 20, 2002
    Inventors: Anne Bruckner, Michael Butters, Paul Vincent Fish, Michael Paul Fitzgerald, Julie Ann Macrae, Trevor Jack Newbury, Richard Anthony Storey