Patents by Inventor John Y. L. Chung

John Y. L. 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: 20220242866
    Abstract: The present invention provides processes for the preparation of 2-fluoroadenine, as well as certain intermediates useful in the preparation of 2?-deoxy-4?-C-ethynyl-2-fluoroadenosine (EFdA): EFdA.
    Type: Application
    Filed: June 18, 2020
    Publication date: August 4, 2022
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: John Y.L. Chung, Cynthia Marilyn Hong, Guy R. Humphrey, Kevin M. Maloney, Yingju Xu, Richard J. Varsolona
  • Publication number: 20220194941
    Abstract: The invention is related to the preparation of protected piperidine carboxylates suitable for use as intermediates that lead, via a series of additional process steps, including a sulfation of a hydroxy urea compound, to the preparation of the beta lactamase inhibitor (2S,5R)-7-oxo-N-piperidin-4-yl-6-(sulfoxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide.
    Type: Application
    Filed: April 21, 2020
    Publication date: June 23, 2022
    Applicants: Merck Sharp & Dohme Corp., Merck Sharp & Dohme (UK) Limited
    Inventors: John Y.L. Chung, Tetsuji Itoh, Jungchul Kim, Jacob Henry Waldman, Debra J. Wallace, Andrew Wood, Feng Xu, Andrew Gibson, Jeremy Peter Scott
  • Publication number: 20220073459
    Abstract: The present invention is directed to a process for preparing a compound of formula I-11 through multiple-step reactions:
    Type: Application
    Filed: September 17, 2021
    Publication date: March 10, 2022
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG
  • Patent number: 11124478
    Abstract: The present invention is directed to a process for preparing a compound of formula I-11 through multiple-step reactions:
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: September 21, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Kevin Campos, Edward Cleator, Robert F. Dunn, Andrew Gibson, R. Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Publication number: 20210221815
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 22, 2021
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG
  • Publication number: 20210122717
    Abstract: Disclosed herein is a novel process for preparing Compound A free base, 5-((2,4-diaminopyrimidin-5-yl)oxy)-4-iso-propyl-2-methoxybenzenesulfonamide, and a citrate salt of Compound A with simplified chemistry and a high overall yield: Compound A. In one embodiment, the overall yield from the starting material 2-isopropylphenol to Compound A citrate salt is greater than 50%. In another embodiment, the overall yield is greater than 60%. Also disclosed herein are novel salts and solvates of Compound A.
    Type: Application
    Filed: April 18, 2019
    Publication date: April 29, 2021
    Applicants: Merck Sharp & Dohme Corp., Werthenstein BioPharma GmbH
    Inventors: Kevin M. Maloney, Kallol Basu, John Y.L. Chung, Richard Desmond, Michael James Di Maso, Guy R. Humphrey, Alfred Y. Lee, Dan Lehnherr, Feng Peng, Hong Ren, Mark Weisel, Siwei Zhang, Patrick Larpent
  • Patent number: 10899771
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: January 26, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Kevin Campos, Edward Cleator, Robert F. Dunn, Andrew Gibson, R. Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Publication number: 20200290962
    Abstract: The present invention is directed to a process for preparing a compound of formula I-11 through multiple-step reactions:
    Type: Application
    Filed: February 20, 2020
    Publication date: September 17, 2020
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG
  • Patent number: 10577316
    Abstract: The present invention is directed to a process for preparing a compound of formula I-11 through multiple-step reactions:
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 3, 2020
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Kevin Campos, Edward Cleator, Robert F. Dunn, Andrew Gibson, R Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Publication number: 20200031838
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Application
    Filed: October 1, 2019
    Publication date: January 30, 2020
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG
  • Patent number: 10472345
    Abstract: The present invention relates to processes for the preparation of N-protected 4-((2S,5R)-5-((benzyloxy)amino)piperidine-2-carboxamido)piperidine-1-carboxylates. Such compounds have application in the preparation of beta-lactamase inhibitors such as 7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxamides and esters, in particular, the beta lactamase inhibitor, (2S,5R)-7-oxo-N-piperidin-4-yl-6-(sulfoxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide. The present invention also encompasses intermediates useful in the disclosed processes and methods for their preparation.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 12, 2019
    Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Limited
    Inventors: Aaron M. Dumas, Jeremy P. Scott, Michael Shevlin, Zhijian Liu, John Y. L. Chung, Feng Xu, Dongfang Meng
  • Patent number: 10435410
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 8, 2019
    Assignee: MERCK SHARP & DOHME CORPORATION
    Inventors: John Y. L. Chung, Kevin Campos, Edward Cleator, Robert F. Dunn, Andrew Gibson, R. Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Patent number: 10214554
    Abstract: The present invention is directed to a process for making Chloro-Substituted Nucleoside Phosphoramidate Compounds of formula (I): which are useful for the treatment and prophylaxis of HCV infection. The present invention is also directed to compounds that are useful as synthetic intermediates for making the compounds of formula (I).
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: February 26, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Amude Kassim, John Limanto, Michael Shevlin, Peter E. Maligres, Daniel A. DiRocco, James F. Dropinski, Rose Mathew, Yi Ning Ji Chen, Edward C. Sherer, Mikhail Reibarkh, Artis Klapars, Alan Hyde, Susan L. Zultanski, Aaron Moment, Bryon Simmons, Tyler A. Davis, Timothy James Wright, Ralph Calabria, Louis charles Campeau
  • Publication number: 20190055216
    Abstract: The present invention relates to processes for the preparation of N-protected 4-((2S,5R)-5-((benzyloxy)amino)piperidine-2-carboxamido)piperidine-1-carboxylates. Such compounds have application in the preparation of beta-lactamase inhibitors such as 7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxamides and esters, in particular, the beta lactamase inhibitor, (2S,5R)-7-oxo-N-piperidin-4-yl-6-(sulfoxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide. The present invention also encompasses intermediates useful in the disclosed processes and methods for their preparation.
    Type: Application
    Filed: January 30, 2017
    Publication date: February 21, 2019
    Applicants: MERCK SHARP & DOHME CORP., MERCK SHARP & DOHME LIMITED
    Inventors: Aaron M. Dumas, Jeremy P. Scott, Michael Shevlin, Zhijian Liu, John Y. L. Chung, Feng Yu, Dongfang Meng
  • Publication number: 20190016729
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 17, 2019
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: John Y.L. Chung, Kevin Campos, Edwards Cleator, Robert F. Dunn, Andrew Gibson, R. Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Patent number: 10087189
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 2, 2018
    Assignee: MERCK SHARP & DOHME CORP.
    Inventors: John Y. L. Chung, Kevin Campos, Edward Cleator, Robert F. Dunn, Andrew Gibson, R. Scott Hoerrner, Stephen Keen, Dave Lieberman, Zhuqing Liu, Joseph Lynch, Kevin M. Maloney, Feng Xu, Nobuyoshi Yasuda, Naoki Yoshikawa, Yong-Li Zhong
  • Patent number: 10053466
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 21, 2018
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Publication number: 20180093992
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Publication number: 20180065973
    Abstract: The present invention is directed to processes for preparing beta 3 agonists of Formula (I) and Formula (II) and their intermediates. The beta 3 agonists are useful in the treatment of certain disorders, including overactive bladder, urinary incontinence, and urinary urgency.
    Type: Application
    Filed: November 9, 2017
    Publication date: March 8, 2018
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG
  • Publication number: 20180029981
    Abstract: The present invention is directed to a process for preparing a compound of formula I-11 through multiple-step reactions:
    Type: Application
    Filed: September 26, 2017
    Publication date: February 1, 2018
    Inventors: John Y.L. CHUNG, Kevin CAMPOS, Edward CLEATOR, Robert F. DUNN, Andrew GIBSON, R. Scott HOERRNER, Stephen KEEN, Dave LIEBERMAN, Zhuqing LIU, Joseph LYNCH, Kevin M. MALONEY, Feng XU, Nobuyoshi YASUDA, Naoki YOSHIKAWA, Yong-Li ZHONG