Patents by Inventor YongQi Mu

YongQi Mu 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: 20230126376
    Abstract: Methods for the synthesis of methyl 2-fluoroacrylate (MFA) are provided. The methods include use of various hydrofluorination agents using a variety of starting materials and reaction schemes. The methyl 2-fluoroacrylate prepared by the methods described herein can further be used to prepare patiromer calcium sorbitex.
    Type: Application
    Filed: March 27, 2021
    Publication date: April 27, 2023
    Inventors: Yongqi Mu, Jessica Brunke
  • Publication number: 20220306579
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Application
    Filed: January 5, 2022
    Publication date: September 29, 2022
    Applicant: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Patent number: 11247969
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 15, 2022
    Assignee: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Patent number: 10844076
    Abstract: The instant disclosure relates to (among other things) compounds that are derivatives of 6-(2,3-dichlorophenyl)-1,2,4-triazin-5-amine. The compounds provided possess unique effects and differences over other phenyltriazines known in the art.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: November 24, 2020
    Assignee: Nektar therapeutics
    Inventors: Pankaj Sharma, Vijay Kumar Khatri, Xuyuan Gu, Yuan Song, Michael Lixin Shen, Jennifer Riggs-Sauthier, Neel K. Anand, Antoni Kozlowski, Aleksandrs Odinecs, Timothy A. Riley, Zhongxu Ren, YongQi Mu, Xiaoming Shen, Xuejun Yuan, Natalia Aurrecoechea, Donogh John Roger O'Mahony, Bo-Liang Deng
  • Publication number: 20200290966
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Applicant: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Patent number: 10766845
    Abstract: The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 8, 2020
    Assignee: Vifor (International) Ltd.
    Inventor: YongQi Mu
  • Patent number: 10766864
    Abstract: The present invention relates to compounds and their use as ligands for mu opioid receptors. Also included are methods for preparing the compounds and pharmaceutical compositions containing the compounds. In one or more embodiments of the invention, a compound according to Formula I is provided: and pharmaceutically acceptable salts thereof, wherein R1-R11 are as described herein.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: September 8, 2020
    Assignee: Nektar Therapeutics
    Inventors: Neel K. Anand, Natalia Aurrecoechea, Lin Cheng, Bo-Liang Deng, Donogh John Roger O'Mahony, YongQi Mu, Erik Krogh-Jespersen
  • Publication number: 20200207694
    Abstract: The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 2, 2020
    Inventor: YongQi Mu
  • Patent number: 10584089
    Abstract: The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent. In particular, a process for fluorinating a double bond is disclosed. This process comprises forming a reaction mixture comprising a hydrofluorocarbon solvent, fluorine gas, and a compound of formula 1 wherein R1 is hydroxy, alkoxy, chloro, or —OC(O)CH?CH2 to form a compound of formula 2 in a yield of at least 50% wherein R2 is hydroxy, alkoxy, chloro, —OC(O)CHFCH2F, wherein the hydrofluorocarbon solvent comprises 2H,3H-decafluoropentane and the reaction mixture further comprises a fluorination agent.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 10, 2020
    Assignee: Vifor (International) Ltd.
    Inventor: YongQi Mu
  • Patent number: 10570092
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: February 25, 2020
    Assignee: Theravance Biopharma R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Publication number: 20200031752
    Abstract: The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent.
    Type: Application
    Filed: November 26, 2018
    Publication date: January 30, 2020
    Inventor: YongQi Mu
  • Publication number: 20190359570
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Application
    Filed: May 23, 2019
    Publication date: November 28, 2019
    Applicant: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Patent number: 10343995
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 9, 2019
    Assignee: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Publication number: 20190161428
    Abstract: The present invention generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent.
    Type: Application
    Filed: November 26, 2018
    Publication date: May 30, 2019
    Inventor: YongQi Mu
  • Patent number: 10272103
    Abstract: The present invention provides a crosslinked amine and amide polymers effective for binding and removing bile salts from the gastrointestinal tract. These bile acid binding polymers or pharmaceutical compositions thereof can be administered to subjects to treat various conditions, including hypercholesteremia, diabetes, pruritis, irritable bowel syndrome-diarrhea (IBS-D), bile acid malabsorption, and the like.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 30, 2019
    Assignee: Relypsa, Inc.
    Inventors: Jordan Kopping, Paul Mansky, YongQi Mu, Michael James Cope, Elizabeth Goka, Angela Lee, Deidre Madsen, Jun Shao, Kalpesh Biyani, Eric Connor, Scott Hecker, Inez Lees, Grace May, Faleh Salaymeh, Hongmin Zhang, David Bergbreiter
  • Publication number: 20190071454
    Abstract: The instant disclosure relates to (among other things) compounds that are derivatives of 6-(2,3-dichlorophenyl)-1,2,4-triazin-5-amine. The compounds provided possess unique effects and differences over other phenyltriazines known in the art.
    Type: Application
    Filed: November 6, 2018
    Publication date: March 7, 2019
    Inventors: Pankaj Sharma, Vijay Kumar Khatri, Xuyuan Gu, Yuan Song, Michael Lixin Shen, Jennifer Riggs-Sauthier, Neel K. Anand, Antoni Kozlowski, Aleksandrs Odinecs, Timothy A. Riley, Zhongxu Ren, YongQi Mu, Xiaoming Shen, Xuejun Yuan, Natalia Aurrecoechea, Donogh John Roger O'Mahony, Bo-Liang Deng
  • Publication number: 20190047957
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Application
    Filed: September 13, 2018
    Publication date: February 14, 2019
    Applicant: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li
  • Patent number: 10189859
    Abstract: The instant disclosure relates to (among other things) compounds that are derivatives of 6-(2,3-dichlorophenyl)-1,2,4-triazin-5-amine. The compounds provided possess unique effects and differences over other phenyltriazines known in the art.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: January 29, 2019
    Assignee: Nektar Therapeutics
    Inventors: Pankaj Sharma, Vijay Kumar Khatri, Xuyuan Gu, Yuan Song, Michael Lixin Shen, Jennifer Riggs-Sauthier, Neel K. Anand, Antoni Kozlowski, Aleksandrs Odinecs, Timothy A. Riley, Zhongxu Ren, YongQi Mu, Xiaoming Shen, Xuejun Yuan, Natalia Aurrecoechea, Donogh John Roger O'Mahony, Bo-Liang Deng
  • Patent number: 10138198
    Abstract: The present disclosure generally relates to processes for converting acrylate esters or a derivative thereof to difluoropropionic acid or a derivative thereof. This process is generally performed using fluorine gas in a hydrofluorocarbon solvent. In particular, a continuous process for fluorinating a double bond is disclosed, the process comprising forming a reaction stream comprising a compound of formula 1 or formula 5 dissolved in a hydrofluorocarbon or fluorocarbon solvent, wherein R1 is hydroxy, alkoxy, chloro, or —OC(O)CH?CH2; the reaction stream flowing through a continuous fluorination reactor at a flow rate of from about 0.2 mL/minute to about 2 mL/minute and fluorine gas flows through the continuous fluorination reactor at a gas flow rate of from about 0.2 mmol/minute to about 2 mmol/minute; whereby reaction of the compound of formula 1 or formula 5 with the fluorine gas forms a compound of formula 2 or formula 6 wherein R2 is hydroxy, alkoxy, chloro, or —OC(O)CHFCH2F.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: November 27, 2018
    Assignee: Vifor (International) Ltd.
    Inventor: YongQi Mu
  • Patent number: 10106503
    Abstract: This invention provides compounds of formula I: wherein a, b, c, d, m, n, p, s, t, W, Ar1, R1, R2, R3, R4, R6, R7, and R8 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 23, 2018
    Assignee: THERAVANCE BIOPHARMA R&D IP, LLC
    Inventors: Mathai Mammen, YuHua Ji, YongQi Mu, Craig Husfeld, Li Li