Patents by Inventor Lianhe Shu

Lianhe Shu 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: 20240148742
    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: May 9, 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: 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: 20230002324
    Abstract: Disclosed herein are naphthoquinone derivative compounds of the formula shown below, compositions thereof, and methods of using such compounds and compositions for treating or suppressing oxidative stress disorders and/or neurodegenerative disorders and/or for inhibiting ferroptosis.
    Type: Application
    Filed: June 13, 2020
    Publication date: January 5, 2023
    Inventors: Maulen M. UTEULIYEV, Lianhe SHU, Steven J. RICHARDS, Alexander A. WARKENTIN, Dana DAVIS
  • 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: 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: 20190381053
    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: July 1, 2019
    Publication date: December 19, 2019
    Inventors: Rebecca TAUB, Charles H. REYNOLDS, Lianhe SHU, Ping WANG, Duk Soon CHOI
  • Patent number: 10376517
    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: April 10, 2018
    Date of Patent: August 13, 2019
    Assignees: Madrigal Pharmaceuticals, Inc., Hoffmann-La Roche Inc.
    Inventors: Rebecca Taub, Charles H. Reynolds, Lianhe Shu, Ping Wang, Duk Soon Choi
  • Patent number: 9828340
    Abstract: The invention relates to a process for the preparation of 4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-3-methoxy-benzoic acid of the formula (I) as well as intermediates thereof and pharmaceutical preparations thereof, comprising the step of reacting a compound of the formula (IV) with a compound of the formula (V), as defined in the specification, in the presence of a chiral silver- or copper catalyst.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: November 28, 2017
    Assignee: HOFFMANN-LA ROCHE INC.
    Inventors: Daniel Fishlock, Chen Gu, Lianhe Shu, Pankaj Devdatta Rege, Keshab Sarma
  • 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: 20160002158
    Abstract: The present invention provides an improved method for the large scale production of the compound 4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-3-methoxy-benzoic acid.
    Type: Application
    Filed: February 18, 2014
    Publication date: January 7, 2016
    Applicant: Hoffmann-La Roche AG
    Inventors: Daniel FISHLOCK, Chen GU, Lianhe SHU, Pankaj Devdatta REGE, Keshab SARMA
  • 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
  • Patent number: 7727750
    Abstract: The present invention relates to biocatalytic asymmetric reduction for the preparation of 2-amino-[5-(1-hydroxy-2-hydroxy or halogen-ethyl)]-pyrazine derivatives of the formula wherein R is lower alkylcarbonyl or an amino protecting group and R1 is hydroxy or halogen. The compounds are key intermediates in the manufacture of a glucokinase activator.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: June 1, 2010
    Assignee: Hoffman-La Roche Inc.
    Inventors: Steven Paul Hanlon, Hans Iding, Ernst Kupfer, Roumen Nikolaev Radinov, Lianhe Shu, Ping Wang
  • Publication number: 20080248537
    Abstract: The present invention relates to biocatalytic asymmetric reduction for the preparation of 2-amino-[5-(1-hydroxy-2-hydroxy or halogen-ethyl)]-pyrazine derivatives of the formula wherein R is lower alkylcarbonyl or an amino protecting group and R1 is hydroxy or halogen. The compounds are key intermediates in the manufacture of a glucokinase activator.
    Type: Application
    Filed: April 3, 2008
    Publication date: October 9, 2008
    Inventors: Steven Paul Hanlon, Hans Iding, Ernst Kupfer, Roumen Nikolaev Radinov, Lianhe Shu, Ping Wang