Patents by Inventor David Hepworth

David Hepworth 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: 7902188
    Abstract: The present invention provides for compounds of formula (I), (Ia) and (Ib) Wherein: A is selected from C—X and N, B is selected from C—Y and N, R1 is selected from H and (C1-C6)alkyl, R2 is selected from H and (C1-C6)alkyl, X is selected from H, HO, C(O)NH2, NH2 Y is selected from H, HO, NH2, Br, Cl and F Z is selected from H, HO, F, CONH2 and CN; And pharmaceutically acceptable salts, solvates and prodrugs thereof; With the provisos that: for a compound of formula (I), (Ia) or (Ib), when A is C—X, B is C—Y, R1 is H or (C1-C6)alkyl and R2 is H or (C1-C6)alkyl at least one of X, Y and Z must be OH; for a compound of formula (I), when A is C—X and B is C—Y, Y is H, Z is H, R1 is H and R2 is H, then X cannot be OH; these compounds are useful as a medicament.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 8, 2011
    Assignee: Pfizer Inc.
    Inventors: Charlotte Moira Norfor Allerton, Andrew Douglas Baxter, Andrew Simon Cook, David Hepworth, Stephen Kwok-Fung Wong
  • Patent number: 7649002
    Abstract: The present invention relates to a class of melanocortin MCR4 agonists of general formula (I) wherein R1, R2, R3, R4 and R5 are as defined herein and especially to selective MCR4 agonist compounds, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: January 19, 2010
    Assignee: Pfizer Inc
    Inventors: Andrew Antony Calabrese, David Sebastien Fradet, David Hepworth, Mark Lansdell
  • Publication number: 20090270384
    Abstract: The present invention provides for compounds of formula (I), (Ia) and (Ib) Wherein: A is selected from C—X and N, B is selected from C—Y and N, R1 is selected from H and (C1-C6)alkyl, R2 is selected from H and (C1-C6)alkyl, X is selected from H, HO, C(O)NH2, NH2 Y is selected from H, HO, NH2, Br, Cl and F Z is selected from H, HO, F, CONH2 and CN; And pharmaceutically acceptable salts, solvates and prodrugs thereof; With the provisos that: for a compound of formula (I), (Ia) or (Ib), when A is C—X, B is C—Y, R1 is H or (C1-C6)alkyl and R2 is H or (C1-C6)alkyl at least one of X, Y and Z must be OH; for a compound of formula (I), when A is C—X and B is C—Y, Y is H, Z is H, R1 is H and R2 is H, then X cannot be OH; these compounds are useful as a medicament.
    Type: Application
    Filed: July 2, 2009
    Publication date: October 29, 2009
    Inventors: Charlotte Moria Norfor Allerton, Andrew Douglas Baxter, Andrew Simon Cook, David Hepworth, Stephen Kwok-Fung Wong
  • Patent number: 7576081
    Abstract: The present invention provides for compounds of formula (I), (Ia) and (Ib) Wherein: A is selected from C—X and N, B is selected from C—Y and N, R1 is selected from H and (C1-C6)alkyl, R2 is selected from H and (C1-C6)alkyl, X is selected from H, HO, C(O)NH2, NH2 Y is selected from H, HO, NH2, Br, Cl and F Z is selected from H, HO F, CONH2 and CN; And pharmaceutically acceptable salts, solvates and prodrugs thereof; With the provisos that: for a compound of formula (I), (Ia) or (Ib), when A is C—X, B is C—Y, R1 is H or (C1-C6)alkyl and R2 is H or (C1-C6)alkyl at least one of X, Y and Z must be OH; for a compound of formula (I), when A is C—X and B is C—Y, Y is H, Z is H, R1 is H and R2 is H, then X cannot be OH; these compounds are useful as a medicament.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: August 18, 2009
    Assignee: Pfizer Inc.
    Inventors: Charlotte Moira Norfor Allerton, Andrew Douglas Baxter, Andrew Simon Cook, David Hepworth, Stephen Kwok-Fung Wong
  • Publication number: 20090005354
    Abstract: The present invention provides for compounds of formula (I): which are a class of dopamine agonists, more particularly a class of agonists that are selective for D3 over D2. These compounds are useful for the treatment and/or prevention of sexual dysfunction, for example female sexual dysfunction (FSD), in particular female sexual arousal disorder (FSAD), hypoactive sexual desire disorder (HSDD; lack of interest in sex), female orgasmic disorder (FOD; inability to achieve orgasm); and male sexual dysfunction, in particular male erectile dysfunction (MED). Male sexual dysfunction as referred to herein is meant to include ejaculatory disorders such as premature ejaculation, anorgasmia (inability to achieve orgasm) or desire disorders such as hypoactive sexual desire disorder (HSDD; lack of interest in sex). These compounds are also useful in treating neuropsychiatric disorders and neurodegenerative disorders.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 1, 2009
    Applicant: Pfizer, Inc.
    Inventors: Charlotte Moira Norfor Allerton, Andrew Simon Cook, David Hepworth, Duncan Charles Miller
  • Publication number: 20080075900
    Abstract: A biocomposite material (1) and methods of production thereof are described. The biocomposite material (1) exhibits a physical stiffness, strength and toughness comparable to known glass fibre composites while its composition makes it inherently impermeable to water. A general formulation for the biocomposite material (1) is given by the expression: Cel(1-x-y) HPIx HPOy where “Cel” represents cellulose fragments (2), “HPI” represents hydrophilic binders (4), “HPO” represents hydrophobic binders (5) and (x) and (y) quantify the percentage by weight of the hydrophilic (4) and hydrophobic binders (5) present within a material, respectively. The described properties of the biocomposite material (1) are achieved when (x) is within the range of from 0.05 to 0.55 and (y) is within the range of from 0.05 to 0.65.
    Type: Application
    Filed: November 10, 2005
    Publication date: March 27, 2008
    Inventors: David Hepworth, Eric Whale
  • Patent number: 7323462
    Abstract: Compounds of formula (I), (Ia) and (Ib) useful as a medicament.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: January 29, 2008
    Assignee: Pfizer Inc.
    Inventors: Charlotte Moira Norfor Allerton, Andrew Douglas Baxter, Andrew Simon Cook, David Hepworth, Stephen Kwok-Fung Wong
  • Patent number: 7129234
    Abstract: The invention relates to compounds of formula I
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 31, 2006
    Assignee: Pfizer Inc.
    Inventors: Mavis D. Adam, Mark D. Andrews, Geoffrey E. Gymer, David Hepworth, Harry R. Howard, Jr., Donald S. Middleton, Alan Stobie
  • Publication number: 20060235016
    Abstract: The present invention provides for compounds of formula (I), (Ia) and (Ib) Wherein: A is selected from C—X and N, B is selected from C—Y and N, R1 is selected from H and (C1-C6)alkyl, R2 is selected from H and (C1-C6)alkyl, X is selected from H, HO, C(O)NH2, NH2 Y is selected from H, HO, NH2, Br, Cl and F Z is selected from H, HO F, CONH2 and CN; And pharmaceutically acceptable salts, solvates and prodrugs thereof; With the provisos that: for a compound of formula (I), (Ia) or (Ib), when A is C—X, B is C—Y, R1 is H or (C1-C6)alkyl and R2 is H or (C1-C6)alkyl at least one of X, Y and Z must be OH; for a compound of formula (I), when A is C—X and B is C—Y, Y is H, Z is H, R1 is H and R2 is H, then X cannot be OH; these compounds are useful as a medicament.
    Type: Application
    Filed: June 19, 2006
    Publication date: October 19, 2006
    Inventors: Charlotte Allerton, Andrew Baxter, Andrew Cook, David Hepworth, Stephen Wong
  • Publication number: 20050288270
    Abstract: The present invention provides for compounds of formula (I): which are a class of dopamine agonists, more particularly a class of agonists that are selective for D3 over D2. These compounds are useful for the treatment and/or prevention of sexual dysfunction, for example female sexual dysfunction (FSD), in particular female sexual arousal disorder (FSAD), hypoactive sexual desire disorder (HSDD; lack of interest in sex), female orgasmic disorder (FOD; inability to achieve orgasm); and male sexual dysfunction, in particular male erectile dysfunction (MED). Male sexual dysfunction as referred to herein is meant to include ejaculatory disorders such as premature ejaculation, anorgasmia (inability to achieve orgasm) or desire disorders such as hypoactive sexual desire disorder (HSDD; lack of interest in sex). These compounds are also useful in treating neuropsychiatric disorders and neurodegenerative disorders.
    Type: Application
    Filed: May 26, 2005
    Publication date: December 29, 2005
    Inventors: Charlotte Moira Norfor Allerton, Andrew Simon Cook, David Hepworth, Duncan Charles Miller
  • Publication number: 20050267096
    Abstract: The present invention provides for compounds of formula (I), which are a class of dopamine agonists, more particularly a class of agonists that are selective for D3 over D2. These compounds are useful for the treatment and/or prevention of sexual dysfunction, for example female sexual dysfunction (FSD), in particular female sexual arousal disorder (FSAD), hypoactive sexual desire disorder (HSDD; lack of interest in sex), female orgasmic disorder (FOD; inability to achieve orgasm); and male sexual dysfunction, in particular male erectile dysfunction (MED). Male sexual dysfunction as referred to herein is meant to include ejaculatory disorders such as premature ejaculation, anorgasmia (inability to achieve orgasm) or desire disorders such as hypoactive sexual desire disorder (HSDD; lack of interest in sex). These compounds are also useful in treating neuropsychiatric disorders and neurodegenerative disorders.
    Type: Application
    Filed: May 26, 2005
    Publication date: December 1, 2005
    Inventors: Charlotte Moira Allerton, David Hepworth, Duncan Miller
  • Publication number: 20050176772
    Abstract: The present invention relates to a class of melanocortin MCR4 agonists of general formula (I) wherein R1, R2, R3, R4 and R5 are as defined herein and especially to selective MCR4 agonist compounds, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes.
    Type: Application
    Filed: February 3, 2005
    Publication date: August 11, 2005
    Inventors: Andrew Calabrese, David Fradet, David Hepworth, Mark Lansdell
  • Patent number: 6914160
    Abstract: This invention relates to compounds of formula (I)
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: July 5, 2005
    Assignee: Pfizer Inc
    Inventors: Duncan Robert Armour, Andrew Simon Bell, Paul John Edwards, David Ellis, David Hepworth, Mark Llewellyn Lewis, Christopher Ronald Smith
  • Publication number: 20050026920
    Abstract: The invention relates to compounds of formula I
    Type: Application
    Filed: August 24, 2004
    Publication date: February 3, 2005
    Inventors: Mark Andrews, David Hepworth, Donald Middleton
  • Publication number: 20040259874
    Abstract: The present invention provides for compounds of formula (I), (Ia) and (Ib) 1
    Type: Application
    Filed: December 2, 2003
    Publication date: December 23, 2004
    Applicant: Pfizer Inc.
    Inventors: Charlotte Moria Norfor Allerton, Andrew Douglas Baxter, Andrew Simon Cook, David Hepworth, Stephen Kwok-Fung Wong
  • Patent number: 6800652
    Abstract: The invention relates to compounds of formula I
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: October 5, 2004
    Assignee: Pfizer Inc.
    Inventors: Mark David Andrews, David Hepworth, Donald Stuart Middleton
  • Publication number: 20040180941
    Abstract: The invention relates to inhibitors of neutral endopeptidase enzyme (NEP), uses thereof, processes for the preparation thereof, intermediates used in the preparation thereof and compositions containing said inhibitors. These inhibitors have utility in a variety of therapeutic areas including the treatment of male and female sexual dysfunction, particularly female sexual dysfunction (FSD), especially wherein the FSD is female sexual arousal disorder (FSAD).
    Type: Application
    Filed: March 12, 2004
    Publication date: September 16, 2004
    Applicant: Pfizer Inc
    Inventor: David Hepworth
  • Publication number: 20040106594
    Abstract: The invention relates to compounds of formula I 1
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Applicant: Pfizer Inc
    Inventors: Mavis D. Adam, Mark D. Andrews, Geoffrey E. Gymer, David Hepworth, Harry R. Howard, Donald S. Middleton, Alan Stobie
  • Publication number: 20040097509
    Abstract: The invention relates to compounds of formula I 1
    Type: Application
    Filed: July 31, 2003
    Publication date: May 20, 2004
    Applicant: Pfizer Inc.
    Inventors: Mark David Andrews, David Hepworth, Donald Stuart Middleton
  • Publication number: 20030207857
    Abstract: The invention relates to compounds of formula I 1
    Type: Application
    Filed: April 11, 2002
    Publication date: November 6, 2003
    Inventors: Mavis D. Adam, Mark D. Andrews, Geoffrey E. Gymer, David Hepworth, Harry R. Howard, Donald S. Middleton, Alan Stobie