Patents by Inventor Robert J. Duguid

Robert J. Duguid 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: 20240122936
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Application
    Filed: December 22, 2023
    Publication date: April 18, 2024
    Inventors: D. Keith HESTER, II, Robert J. DUGUID, Martha J. KELLY, Anna CHASNOFF, Gang DONG, Edwin L. CROW, Lianhe SHU, Ping WANG, Duk Soon CHOI
  • Publication number: 20230210856
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Application
    Filed: December 15, 2022
    Publication date: July 6, 2023
    Inventors: D. Keith HESTER, II, Robert J. DUGUID, Martha J. KELLY, Anna CHASNOFF, Gang DONG, Edwin L. CROW, Lianhe SHU, Ping WANG, Duk Soon CHOI
  • Patent number: 11564926
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: January 31, 2023
    Assignees: Madrigal Pharmaceuticals, Inc., Hoffmann-La Roche Inc.
    Inventors: D. Keith Hester, II, Robert J. Duguid, Martha J. Kelly, Anna Chasnoff, Gang Dong, Edwin L. Crow, Lianhe Shu, Ping Wang, Duk Soon Choi
  • Publication number: 20230012321
    Abstract: The present disclosure relates to ultra-pure forms, polymorphs, amorphous forms, and formulations of N-[(1r,4r)-4-(3-chloro-4-cyanophenoxy)cyclohexyl]-6-[4-({4-[2-(2,6-dioxopiperidin-3-yl)-6-fluoro-1,3-dioxo-2,3-dihydro-1H-isoindol-5-yl]piperazin-1-yl}methyl)piperidin-1-yl]pyridazine-3-carboxamide, referred to herein as Compound A: The present disclosure also relates methods of manufacturing and purifying the same, as well as intermediates useful in the synthesis of Compound A. The ultra-pure forms, polymorphs, amorphous forms, and formulations of Compound A can be used as therapeutic agents for the treatment of various diseases and conditions such as cancer.
    Type: Application
    Filed: May 6, 2021
    Publication date: January 12, 2023
    Applicant: Arvinas Operations, Inc.
    Inventors: Laura E.N. ALLAN, Chungpin Herman CHEN, Hanqing DONG, Robert J. DUGUID, John A. GROSSO, Royal J. HASKELL, III, Casey Keith JAGER, Venkata A. KATTUBOINA, Aditya Mohan KAUSHAL, Samuel Elliott KENNEDY, Rhys LLOYD, Miranda Annell NEESER, Yuping QIU, Hayley REECE, Maxwell Marco REEVE, Joseph P. REO, Jerod ROBERTSON, Mohammad Mehdi ZAHEDI
  • Publication number: 20210230158
    Abstract: The present disclosure relates to processes for the production of salts and crystalline forms of a compound having the formula.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 29, 2021
    Inventors: Robert J. Duguid, John A. Grosso, Sergiy Krasutsky
  • Publication number: 20210161904
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Application
    Filed: December 11, 2020
    Publication date: June 3, 2021
    Inventors: D. Keith HESTER, II, Robert J. DUGUID, Martha J. KELLY, Anna CHASNOFF, Gang DONG, Edwin L. CROW, Lianhe SHU, Ping WANG, Duk Soon CHOI
  • Patent number: 10913739
    Abstract: The present disclosure relates to processes for the production of salts and crystalline forms of a compound having the formula.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: February 9, 2021
    Assignee: Vitae Pharmaceuticals, LLC (121374)
    Inventors: Robert J. Duguid, John A. Grosso, Sergiy Krasutsky
  • Patent number: 10894050
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: January 19, 2021
    Assignees: Madrigal Pharmaceuticals, Inc., Hoffmann-La Roche Inc.
    Inventors: D. Keith Hester, II, Robert J. Duguid, Martha J. Kelly, Anna Chasnoff, Gang Dong, Edwin L. Crow, Lianhe Shu, Ping Wang, Duk Soon Choi
  • Publication number: 20200148677
    Abstract: The present disclosure relates to processes for the production of salts and crystalline forms of a compound having the formula.
    Type: Application
    Filed: July 24, 2018
    Publication date: May 14, 2020
    Inventors: Robert J. Duguid, John A. Grosso, Sergiy Krasutsky
  • Patent number: 10442829
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: October 15, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Publication number: 20180251482
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 6, 2018
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Patent number: 10065947
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: September 4, 2018
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Publication number: 20180244704
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Application
    Filed: May 3, 2018
    Publication date: August 30, 2018
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Patent number: 9988406
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 5, 2018
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Publication number: 20170275315
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 28, 2017
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Patent number: 9624250
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: April 18, 2017
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Publication number: 20160176905
    Abstract: A crystalline form of crystalline (R)-3-(4-(2-(2-methyltetrazol-5-yl)-pyridin-5-yl)-3-fluorophenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, methods of making the crystalline form and pharmaceutical compositions comprising the crystalline form are useful antibiotics. Further, the derivatives of the present invention may exert potent antibacterial activity versus various human and animal pathogens, including Gram-positive bacteria such as Staphylococi, Enterococci and Streptococi, anaerobic microorganisms such as Bacteroides and Clostridia, and acid-resistant microorganisms such as Mycobacterium tuberculosis and Mycobacterium avium. Accordingly, the compositions comprising the crystalline form may be used in antibiotics.
    Type: Application
    Filed: December 4, 2015
    Publication date: June 23, 2016
    Inventors: Katharina Reichenbacher, Robert J. Duguid, Jacqueline A. Ware, Douglas Phillipson
  • Patent number: 9328087
    Abstract: Methods of preparing a class of oxazolidinones useful to impede bacterial growth are disclosed.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: May 3, 2016
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Carrie A. Costello, Jacqueline A. Ware, Robert J. Duguid
  • Patent number: 9266861
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 23, 2016
    Assignees: Madrigal Pharmaceuticals, Inc., Hoffmann-La Roche Inc.
    Inventors: D. Keith Hester, II, Robert J. Duguid, Martha J. Kelly, Anna Chasnoff, Gang Dong, Edwin L. Crow, Duk Soon Choi, Lianhe Shu, Ping Wang
  • Publication number: 20150203473
    Abstract: The disclosure describes methods of synthesis of pyridazinone compounds as thyroid hormone analogs and their prodrugs. Preferred methods according to the disclosure allow for large-scale preparation of pyridazinone compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of pyridazinone compounds in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of a pyridazinone compound. Further disclosed is a method for treating resistance to thyroid hormone in a subject having at least one TR? mutation.
    Type: Application
    Filed: March 17, 2015
    Publication date: July 23, 2015
    Inventors: D. Keith Hester, II, Robert J. Duguid, Martha J. Kelly, Anna Chasnoff, Gang Dong, Edwin L. Crow, Rebecca Taub, Charles H. Reynolds, Duk Soon Choi, Lianhe Shu, Ping Wang