Patents by Inventor Cheol K. Chung

Cheol K. Chung 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: 20230174567
    Abstract: The present invention relates to efficient processes useful in the preparation of fluorinated nucleosides, such as (2S,3R,4S,5R)-5-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-3-fluoro-4-hydroxy-2-(mercaptomethyl)tetrahydrofuran-3-yl dihydrogen phosphate, also known as 3?-fluoro-thio-guanosine monophosphate or 3?-F-thio-GMP. Such fluorinated nucleosides may be useful as a biologically active compound and or as an intermediate for the synthesis of more complex biologically active compounds. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.
    Type: Application
    Filed: May 20, 2021
    Publication date: June 8, 2023
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Travis Armiger, Kevin M. Belyk, Tamas Benkovics, Cheol K. Chung, Yining Ji Chen, Heather Claire Johnson, Artis Klapars, Zhijian Liu, Zhuqing Liu, Jeffrey C. Moore, Andrew J. Neel, Feng Peng, Stephan M. Rummelt, Nastaran Salehi Marzuarani, Benjamin D. Sherry, Zhiguo Jake Song, Ben William Hulme Turnbull, Lu Wang, Feng Xu
  • Patent number: 10815214
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 27, 2020
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul G. Bulger, Kevin M. Belyk, John Limanto, Guy R. Humphrey
  • Publication number: 20200010449
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Application
    Filed: September 19, 2019
    Publication date: January 9, 2020
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul G. Bulger, Kevin M. Belyk, John Limanto, Guy R. Humphrey
  • Patent number: 10435386
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: October 8, 2019
    Assignee: MERCK SHARP & DOHME CORP.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul Gerard Bulger, Kevin Michael Belyk, John Limanto, Guy R. Humphrey
  • Patent number: 10392353
    Abstract: Disclosed herein is a novel process for preparing substituted quinazoline compounds of formula (I) using a hydrogen bonding catalyst.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: August 27, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Guy R. Humphrey, Zhijian Liu, Mark McLaughlin, Yingju Xu, Younong Yu
  • Publication number: 20180346429
    Abstract: Disclosed herein is a novel process for preparing substituted quinazoline compounds of formula (I) using a hydrogen bonding catalyst.
    Type: Application
    Filed: November 18, 2016
    Publication date: December 6, 2018
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Guy R. Humphrey, Zhijian Liu, Mark McLaughlin, Yingju Xu, Younong Yu
  • Publication number: 20170137403
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul Gerard Bulger, Kevin Michael Belyk, John Limanto, Guy R. Humphrey
  • Patent number: 9580407
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: February 28, 2017
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul Gerard Bulger, Kevin Michael Belyk, John Limanto, Guy R. Humphrey
  • Publication number: 20150299167
    Abstract: A novel process is provided for the efficient preparation of an asymmetric compound of structural formula I: comprising a copper-catalyzed, carbon-nitrogen cross-coupling step. The process described as part of the present invention can be used to manufacture poly (ADP-ribose) polymerase (PARP) inhibitors, which may be useful for the treatment of cancer. In particular, the present invention describes a process for the manufacture of the PARP inhibitor, 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide.
    Type: Application
    Filed: December 3, 2013
    Publication date: October 22, 2015
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Cheol K. Chung, Mark E. Scott, Paul Gerard Bulger, Kevin Michael Belyk, John Limanto, Guy R. Humphrey
  • Patent number: 9145348
    Abstract: An efficient process is disclosed for producing the compound of formula I, which is the CETP inhibitor anacetrapib, which raises HDL-cholesterol and reduces LDL-cholesterol in human patients and may be effective for treating or reducing the risk of developing atherosclerosis:
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: September 29, 2015
    Assignee: Merck Sharpe & Dohme Corp.
    Inventors: Cheol K. Chung, Guy R. Humphrey, Peter E. Maligres, Timothy J. Wright
  • Publication number: 20150259284
    Abstract: The present invention relates to a process for preparing aminocyclohexyl ether compounds of Formula I: or the pharmaceutically acceptable salts and esters thereof. In particular, the instant invention is directed towards a process for preparing (1R,2R)-2-[(3R)-Hydroxypyrrolidinyl]-1-(3,4-dimethoxyphenethoxy)-cyclohexane as well as various intermediates.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 17, 2015
    Inventors: John Limanto, Gregory L. Beutner, Jingjun Yin, Artis Klapars, Eric R. Ashley, Hallena R. Strotman, Matthew D. Truppo, Cheol K. Chung, Gregory Hughes, Zhijian Liu, Brendan Grau, Jacob Janey
  • Patent number: 9006460
    Abstract: The present invention relates to a process for preparing aminocyclohexyl ether compounds of Formula I: or the pharmaceutically acceptable salts and esters thereof. In particular, the instant invention is directed towards a process for preparing (1R,2R)-2-[(3R)-Hydroxypyrrolidinyl]-1-(3,4-dimethoxyphenethoxy)-cyclohexane as well as various intermediates.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 14, 2015
    Assignee: Cardiome International AG
    Inventors: John Limanto, Gregory L. Beutner, Jingjun Yin, Artis Klapars, Eric R. Ashley, Hallena R. Strotman, Matthew D. Truppo, Cheol K. Chung, Gregory Hughes, Zhijian Liu, Brendan Grau, Jacob Janey
  • Publication number: 20140303380
    Abstract: An efficient process is disclosed for producing the compound of formula I, which is the CETP inhibitor anacetrapib, which raises HDL-cholesterol and reduces LDL-cholesterol in human patients and may be effective for treating or reducing the risk of developing atherosclerosis:
    Type: Application
    Filed: October 26, 2012
    Publication date: October 9, 2014
    Inventors: Cheol K. Chung, Guy R. Humphey, Peter E. Maligres, Timothy J. Wright
  • Publication number: 20130149751
    Abstract: The present invention relates to a process for preparing aminocyclohexyl ether compounds of Formula I: or the pharmaceutically acceptable salts and esters thereof. In particular, the instant invention is directed towards a process for preparing (1R,2R)-2-[(3R)-Hydroxypyrrolidinyl]-1-(3,4-dimethoxyphenethoxy)-cyclohexane as well as various intermediates.
    Type: Application
    Filed: August 8, 2011
    Publication date: June 13, 2013
    Inventors: John Limanto, Gregory L. Beutner, Jingjun Yin, Artis Klapars, Eric R. Ashley, Hallena R. Strotman, Matthew D. Truppo, Cheol K. Chung, Gregory Hughes, Zhijian Liu, Brendan Grau, Jacob Janey