Patents by Inventor David J. Witter

David J. Witter 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: 20230114091
    Abstract: The present invention provides a compound of Formula (I) (I) and the pharmaceutically acceptable salts, esters, and prodrugs thereof, which are PRMT5 inhibitors. Also provided are methods of making compounds of Formula I, pharmaceutical compositions comprising compounds of Formula I, and methods of using these compounds to treat cancer, sickle cell, and hereditary persistence of foetal hemoglobin (HPFH) mutations.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 13, 2023
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Michelle Machacek, Michael D. Altman, Shuhei Kawamura, Michael H. Reutershan, David L. Sloman, Phieng Siliphaivanh, Sebastian E. Schneider, Charles S. Yeung, David J. Witter, Craig R. Gibeau
  • Publication number: 20230108114
    Abstract: The present invention provides a compound of Formula (I) and the pharmaceutically acceptable salts, esters, and prodrugs thereof, which are PRMT5 inhibitors. Also provided are methods of making compounds of Formula I, pharmaceutical compositions comprising compounds of Formula I, and methods of using these compounds to treat cancer, sickle cell, and hereditary persistence of foetal hemoglobin (HPFH) mutations.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 6, 2023
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Michelle Machacek, Michael D. Altman, Chunghui Huang, Michael H. Reutershan, David L. Sloman, Phieng Siliphaivanh, Sebastian E. Schneider, Charles S. Yeung, David J. Witter, Craig R. Gibeau, Yingchun Ye
  • Publication number: 20230108452
    Abstract: The present invention provides a compound selected from: compounds A, B, C, D and the pharmaceutically acceptable salts, esters, and prodrugs thereof, which are PRMT5 inhibitors. Also provided are methods of making compounds disclosed herein, pharmaceutical compositions comprising compounds disclosed herein, and methods of using these compounds to treat cancer, sickle cell, and hereditary persistence of foetal hemoglobin (HPFH) mutations.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 6, 2023
    Inventors: Michelle Machacek, Michael D. Altman, Chunhui Huang, Michael H. Reutershan, David L. Sloman, David J. Witter, Craig R. Gibeau
  • Publication number: 20230092404
    Abstract: The present invention provides a compound selected from: and the pharmaceutically acceptable salts, esters, and prodrugs thereof, which are PRMT5 inhibitors. Also provided are methods of making compounds disclosed herein, pharmaceutical compositions comprising compounds disclosed herein, and methods of using these compounds to treat cancer, sickle cell, and hereditary persistence of foetal hemoglobin (HPFH) mutations.
    Type: Application
    Filed: December 14, 2020
    Publication date: March 23, 2023
    Inventors: Michelle Machacek, Michael D. Altman, Shuhei Kawamura, David L. Sloman, David J. Witter, Craig R. Gibeau
  • Patent number: 11098059
    Abstract: The present invention provides a compound of Formula (I) or the pharmaceutically acceptable salts thereof, which are PRMT5 inhibitors.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: August 24, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Michelle R. Machacek, David J. Witter, Michael Hale Reutershan, David L. Sloman, Michael D. Altman
  • Patent number: 10947234
    Abstract: The present invention provides a compound of Formula (I) or the pharmaceutically acceptable salts thereof, which are PRMT5 inhibitors.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: March 16, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Michelle R. Machacek, David J. Witter, Michael Hale Reutershan, Michael D. Altman, Paul Anthony Stupple
  • Publication number: 20200361931
    Abstract: The present invention provides a compound of Formula (I) or the pharmaceutically acceptable salts thereof, which are PRMT5 inhibitors.
    Type: Application
    Filed: November 5, 2018
    Publication date: November 19, 2020
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Michelle R. Machacek, David J. Witter, Michael Hale Reutershan, Michael D. Altman, Paul Anthony Stupple
  • Publication number: 20200354377
    Abstract: The present invention provides a compound of Formula (I) or the pharmaceutically acceptable salts thereof, which are PRMT5 inhibitors.
    Type: Application
    Filed: November 5, 2018
    Publication date: November 12, 2020
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Michelle R. Machacek, David J. Witter, Michael Hale Reutershan, David L. Sloman, Michael D. Altman
  • Patent number: 10759805
    Abstract: Disclosed are the ERK inhibitors of formula (1): and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I).
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: September 1, 2020
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Patent number: 10442819
    Abstract: The present invention is directed to tricyclic compounds of formula (I) which are inhibitors of one or more mutant IDH enzymes: (I). The present invention is also directed to uses of the tricyclic compounds described herein in the potential treatment or prevention of cancers in which one or more mutant IDH enzymes are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such cancers.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 15, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Christian Fischer, Stephane L. Bogen, Matthew L. Childers, Francesc Xavier Fradera Llinas, J. Michael Ellis, Sara Esposite, Qingmei Hong, Chunhui Huang, Alexander J. Kim, John W. Lampe, Michelle R. Machacek, Daniel R. McMasters, Ryan D. Otte, Dann L. Parker, Jr., Michael Reutershan, Nunzio Sciammetta, Pengcheng P. Shao, David L. Sloman, Feroze Ujjainwalla, Catherine White, Zhicai Wu, Yang Yu, Kake Zhao, Craig Gibeau, Tesfaye Biftu, Purakkattle Biju, Lei Chen, Joshua Close, Peter H. Fuller, Xianhai Huang, Min K. Park, Valdimir Simov, David J. Witter, Hongjun Zhang
  • Patent number: 10399972
    Abstract: The present invention is directed to tricyclic compounds of formula (I), (Ia) or (Ib) which are inhibitors of one or more mutant IDH enzymes. The present invention is also directed to uses of these tricyclic compounds in the potential treatment or prevention of cancers in which one or more mutant IDH enzymes are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such cancers.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: September 3, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: David J. Witter, Tesfaye Biftu, Purakkattle Biju, Stephane L. Bogen, Qingmei Hong, Chunhui Huang, Xianhai Huang, Bing Li, Min K. Park, David L. Sloman
  • Publication number: 20180319804
    Abstract: Disclosed are the ERK inhibitors of formula (1): and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I).
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Publication number: 20180305352
    Abstract: The present invention is directed to tricyclic compounds of formula (I), (Ia) or (Ib) which are inhibitors of one or more mutant IDH enzymes. The present invention is also directed to uses of these tricyclic compounds in the potential treatment or prevention of cancers in which one or more mutant IDH enzymes are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such cancers.
    Type: Application
    Filed: October 25, 2016
    Publication date: October 25, 2018
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: David J. Witter, Tesfaye Biftu, Purakkattle Biju, Stephane L. Bogen, Qingmei Hong, Chunhui Huang, Xianhai Huang, Bing Li, Min K. Park, David L. Sloman
  • Patent number: 10065967
    Abstract: Disclosed are the ERK inhibitors of formula (1): and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I).
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: September 4, 2018
    Assignee: Merck, Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Publication number: 20170320882
    Abstract: Disclosed are the ERK inhibitors of formula (1): and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I).
    Type: Application
    Filed: July 21, 2017
    Publication date: November 9, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Patent number: 9745307
    Abstract: Disclosed are the ERK inhibitors of formula (I) and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I). This invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of formula (I) and a pharmaceutically acceptable carrier. This invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of formula (I) and an effective amount of at least one other pharmaceutically active ingredient (such as, for example, a chemotherapeutic agent), and a pharmaceutically acceptable carrier. This invention also provides a method of inhibiting ERK (i.e., inhibiting the activity of ERK2) in a patient in need of such treatment comprising administering to said patient an effective amount of at least one compound of formula (I).
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: August 29, 2017
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Patent number: 9546168
    Abstract: Disclosed are the ERK inhibitors of formula (1.0) and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (1.0). This invention provides compounds that are ERK inhibitors (i.e., ERK2 inhibitors). This invention also provides a pharmaceutical composition comprising an effective amount of at least one (e.g., 1) compound of formula (1.0) and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: January 17, 2017
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kathryn Lipford, Danielle Falcone, David L. Sloman, David J. Witter
  • Publication number: 20160311819
    Abstract: Disclosed are the ERK inhibitors of formula (1.0) and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (1.0). This invention provides compounds that are ERK inhibitors (i.e., ERK2 inhibitors). This invention also provides a pharmaceutical composition comprising an effective amount of at least one (e.g., 1) compound of formula (1.0) and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: December 12, 2014
    Publication date: October 27, 2016
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Kathryn Lipford, Danielle Falcone, David L. Sloman, David J. Witter
  • Publication number: 20160068532
    Abstract: Disclosed are the ERK inhibitors of formula (I) and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (I). This invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of formula (I) and a pharmaceutically acceptable carrier. This invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of formula (I) and an effective amount of at least one other pharmaceutically active ingredient (such as, for example, a chemotherapeutic agent), and a pharmaceutically acceptable carrier. This invention also provides a method of inhibiting ERK (i.e., inhibiting the activity of ERK2) in a patient in need of such treatment comprising administering to said patient an effective amount of at least one compound of formula (I).
    Type: Application
    Filed: April 25, 2014
    Publication date: March 10, 2016
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Jongwon Lim, Xianhai Huang, Ronald D. Ferguson, Wei Zhou, Christopher W. Boyce, Phieng Siliphaivanh, David J. Witter, Milana M. Maletic, Joseph A. Kozlowski, Kevin J. Wilson
  • Patent number: 9233979
    Abstract: Disclosed are the ERK inhibitors of formula (1): and the pharmaceutically acceptable salts thereof. Also disclosed are methods of treating cancer using the compounds of formula (1).
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: January 12, 2016
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kevin J. Wilson, David J. Witter, Phieng Siliphaivanh, Kathryn Lipford, David Sloman, Danielle Falcone, Brendan O'Boyle, Umar Faruk Mansoor, Jongwon Lim, Joey L. Methot, Christopher Boyce, Lei Chen, Matthew H. Daniels, Salem Fevrier, Xianhai Huang, Ravi Kurukulasuriya, Ling Tong, Wei Zhou, Joseph Kozlowski, Milana M. Maletic, Bidhan A. Shinkre, Jayanth Thiruvellore Thatai, Raman Kumar Bakshi, Ganesh Babu Karunakaran