Patents by Inventor Congxin Liang

Congxin Liang 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: 20250263420
    Abstract: A method for synthesizing a compound 2-[(2R,5S)-5-[2-methylfuro[3,2-b]imidazo[4,5-d]pyridin-1-yl]tetrahydropyran-2-yl]acetonitrile as a selective JAK1/TYK2 kinase inhibitor. The compound is prepared by taking 7-chloro-6-nitrofuro[3,2-b]pyridine as the starting material, and by nucleophilic substitution, palladium on carbon reduction and cyclization reactions. The present synthesis method has mild reaction conditions, high product yield and high purity, and is suitable for industrial production. A crystal form of the compound, crystal forms of the salts thereof and preparation methods thereof. The crystal form of the compound and the crystal forms of the salts thereof have good physical and chemical properties and are suitable for drug development.
    Type: Application
    Filed: May 1, 2025
    Publication date: August 21, 2025
    Inventors: Congxin LIANG, Laibao Wang, Haihui Liu
  • Publication number: 20250206742
    Abstract: Provided are compounds of Formula (I): wherein all of the variables are as defined herein, which inhibit NOD-like receptor protein 3 (NLRP3) inflammasome activity. Disclosed are the processes for their preparation, pharmaceutical compositions and medicaments containing them, and their use in the treatment of disease and disorders mediated by NLRP3.
    Type: Application
    Filed: March 30, 2023
    Publication date: June 26, 2025
    Applicant: HANGZHOU HIGHLIGHTLL PHARMACEUTICAL CO., LTD
    Inventors: Congxin Liang, Shuangjiang Li, Wei Tang, Xiaojing Tang
  • Publication number: 20250188063
    Abstract: The invention discloses polymorphic forms of a compound of formula I, pharmaceutical compositions containing same, preparation method therefor and use thereof. The compound of formula I of the present invention is as shown in formula I, of which the crystalline form can be crystalline form 1, crystalline form 2, crystalline form 3, crystalline form 5, crystalline form 6 or crystalline form 7. All the crystalline forms of the compound of formula I in the present invention have good crystalline stability and chemical stability and a decrease in purity of their main ingredient less than 2%. The preparation method of the present invention may be used to produce the various crystalline forms of the compound of formula I with high purity, and suitable for large scale production.
    Type: Application
    Filed: January 27, 2025
    Publication date: June 12, 2025
    Inventors: Congxin LIANG, Lihua XIE
  • Publication number: 20250171458
    Abstract: Provided is a method for synthesizing 1H-furo[3,2-b]imidazo[4,5-d]pyridine compounds. The method comprises the following steps of: reacting compound 1 with compound 2 in a solvent in the presence of a base to obtain compound 3; subjecting the compound 3 to a reduction reaction to obtain compound 4; and subjecting the compound 4 to a ring-closing reaction with compound 5 or compound 5? to obtain compound 6 or a hydrate thereof, wherein R is methyl or ethyl, the methyl or ethyl is optionally substituted by hydroxyl, and X?O or CH2. The method for synthesizing the 1H-furo[3,2-b]imidazo[4,5-d]pyridine compound has the advantages of high yield, fewer impurities and is easy to control, saves the cost. The method is simple and convenient to operate, and is suitable for industrial scale.
    Type: Application
    Filed: December 19, 2022
    Publication date: May 29, 2025
    Applicant: HANGZHOU HIGHLIGHTLL PHARMACEUTICAL CO., LTD
    Inventors: Congxin Liang, Shuangjiang Li, Junmin Huang, Guoqiang Shi, Yaya Duan, Pucha Yan
  • Patent number: 12297206
    Abstract: A method for synthesizing a compound 2-[(2R,5S)-5-[2-methylfuro[3,2-b]imidazo[4,5-d]pyridin-1-yl]tetrahydropyran-2-yl]acetonitr ile as a selective JAK1/TYK2 kinase inhibitor. The compound is prepared by taking 7-chloro-6-nitrofuro[3,2-b]pyridine as the starting material, and by nucleophilic substitution, palladium on carbon reduction and cyclization reactions. The present synthesis method has mild reaction conditions, high product yield and high purity, and is suitable for industrial production. A crystal form of the compound, crystal forms of the salts thereof and preparation methods thereof. The crystal form of the compound and the crystal forms of the salts thereof have good physical and chemical properties and are suitable for drug development.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: May 13, 2025
    Assignee: Biohaven Therapeutics Ltd.
    Inventors: Congxin Liang, Laibao Wang, Haihui Liu
  • Publication number: 20250032465
    Abstract: Methods relate to treat a central nervous system (CNS) disorder using a compound of Formulae (I)-(III), or a salt, solvate, hydrate, polymorph, co-crystal, tautomer, stereoisomer, isotopically labeled derivative. or prodrug thereof. Methods of treating a CNS disorder using a composition comprising such compounds are also provided herein. The present disclosure also provides a compound of Formula (A), or a salt, solvate, hydrate, polymorph, co-crystal, tautomer, stereoisomer, isotopically labeled derivative, or prodrug thereof.
    Type: Application
    Filed: August 22, 2022
    Publication date: January 30, 2025
    Inventors: Congxin LIANG, Wei TANG
  • Patent number: 12209080
    Abstract: The invention discloses polymorphic forms of a compound of formula I, pharmaceutical compositions containing same, preparation method therefor and use thereof. The compound of formula I of the present invention is as shown in formula I, of which the crystalline form can be crystalline form 1, crystalline form 2, crystalline form 3, crystalline form 5, crystalline form 6 or crystalline form 7. All the crystalline forms of the compound of formula I in the present invention have good crystalline stability and chemical stability and a decrease in purity of their main ingredient less than 2%. The preparation method of the present invention may be used to produce the various crystalline forms of the compound of formula I with high purity, and suitable for large scale production.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: January 28, 2025
    Assignee: EQUINOX SCIENCES, LLC
    Inventors: Congxin Liang, Lihua Xie
  • Patent number: 12195476
    Abstract: Provided is a method for synthesizing a compound 2-[(2R,5S)-5-[2-[(R)-1-hydroxyethyl]furo[3,2-b]imidazo[4,5-d]pyridin-1-yl]tetrahydropyran-2-yl]acetonitrile as a selective JAK1/TYK2 kinase inhibitor. The compound is prepared by nucleophilic substitution, palladium on carbon reduction, and cyclization reaction using 7-chloro-6-nitrofuro[3,2-b]pyridine as a starting material. The synthesis method has mild reaction conditions, high product yield, and high purity, and is suitable for industrial production. Further provided are a crystal form of the compound, crystal forma of its salts, and their preparation methods. The crystal form of the compound and the crystal forms of its salts have good physical and chemical properties and are suitable for drug development.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: January 14, 2025
    Assignee: HANGZHOU HIGHLIGHTLL PHARMACEUTICAL CO., LTD.
    Inventors: Congxin Liang, Laibao Wang, Haihui Liu
  • Publication number: 20220356173
    Abstract: The invention discloses polymorphic forms of a compound of formula I, pharmaceutical compositions containing same, preparation method therefor and use thereof. The compound of formula I of the present invention is as shown in formula I, of which the crystalline form can be crystalline form 1, crystalline form 2, crystalline form 3, crystalline form 5, crystalline form 6 or crystalline form 7. All the crystalline forms of the compound of formula I in the present invention have good crystalline stability and chemical stability and a decrease in purity of their main ingredient less than 2%. The preparation method of the present invention may be used to produce the various crystalline forms of the compound of formula I with high purity, and suitable for large scale production.
    Type: Application
    Filed: June 15, 2021
    Publication date: November 10, 2022
    Inventors: Congxin LIANG, Lihua XIE
  • Publication number: 20220242873
    Abstract: A method for synthesizing a compound 2-[(2R,5S)-5-[2-methylfuro[3,2-b]imidazo[4,5-d]pyridin-1-yl]tetrahydropyran-2-yl]acetonitr ile as a selective JAK1/TYK2 kinase inhibitor. The compound is prepared by taking 7-chloro-6-nitrofuro[3,2-b]pyridine as the starting material, and by nucleophilic substitution, palladium on carbon reduction and cyclization reactions. The present synthesis method has mild reaction conditions, high product yield and high purity, and is suitable for industrial production. A crystal form of the compound, crystal forms of the salts thereof and preparation methods thereof. The crystal form of the compound and the crystal forms of the salts thereof have good physical and chemical properties and are suitable for drug development.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 4, 2022
    Inventors: Congxin Liang, Laibao Wang, Haihui Liu
  • Publication number: 20220227777
    Abstract: Provided is a method for synthesizing a compound 2-[(2R,5S)-5-[2-[(R)-1-hydroxyethyl]furo[3,2-b]imidazo[4,5-d]pyridin-1-yl]tetrahydropyran-2-yl]acetonitrile as a selective JAK1/TYK2 kinase inhibitor. The compound is prepared by nucleophilic substitution, palladium on carbon reduction, and cyclization reaction using 7-chloro-6-nitrofuro[3,2-b]pyridine as a starting material. The synthesis method has mild reaction conditions, high product yield, and high purity, and is suitable for industrial production. Further provided are a crystal form of the compound, crystal forma of its salts, and their preparation methods. The crystal form of the compound and the crystal forms of its salts have good physical and chemical properties and are suitable for drug development.
    Type: Application
    Filed: April 30, 2020
    Publication date: July 21, 2022
    Inventors: Congxin LIANG, Laibao WANG, Haihui LIU
  • Patent number: 11053224
    Abstract: The invention discloses polymorphic forms of a compound of formula I, pharmaceutical compositions containing same, preparation method therefor and use thereof. The compound of formula I of the present invention is as shown in formula I, of which the crystalline form can be crystalline form 1, crystalline form 2, crystalline form 3, crystalline form 5, crystalline form 6 or crystalline form 7. All the crystalline forms of the compound of formula I in the present invention have good crystalline stability and chemical stability and a decrease in purity of their main ingredient less than 2%. The preparation method of the present invention may be used to produce the various crystalline forms of the compound of formula I with high purity, and suitable for large scale production.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 6, 2021
    Assignee: EQUINOX SCIENCES, LLC
    Inventors: Congxin Liang, Lihua Xie
  • Patent number: 10899744
    Abstract: Provided are a compound as represented by structural formula (I) ({5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-6-aminopyridazin-3-yl}-N-{4-[((3S,5R)-3,5-di methylpiperazinyl)carbonyl]phenyl}carboxamide hydrochloride) and a novel crystalline form of a hydrate or solvate of the compound. Further provided are a manufacturing method of the compound and crystalline form, a related intermediate, a pharmaceutical composition comprising the compound, an application using the compound or the crystalline form for preparing a pharmaceutical product for treating a disease, symptom, or disorder, and a therapeutic method for treating a disease, symptom, or disorder.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: January 26, 2021
    Assignee: XCOVERY HOLDINGS, INC.
    Inventors: Congxin Liang, Yongbin Ma, Wei He
  • Patent number: 10851084
    Abstract: The new piperazine derivatives are modulators of TRPML and are useful in treating disorders related to TRPML activities such as lysosome storage diseases, muscular dystrophy, age-related common neurodegenerative diseases, oxidative stress or reactive oxygen species (ROS) related diseases, and ageing.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 1, 2020
    Assignee: Lysoway Therapeutics, Inc.
    Inventor: Congxin Liang
  • Publication number: 20200352921
    Abstract: The new arylsulfonamide and arylsulfone derivatives are modulators of TRPML and are useful in treating disorders related to TRPML activities and lysosome functions such as acid-related disorders and cancer.
    Type: Application
    Filed: May 6, 2018
    Publication date: November 12, 2020
    Inventor: Congxin Liang
  • Patent number: 10738060
    Abstract: The new 1H-furo[3,2-b]imidazo[4,5-d]pyridine derivatives are selective Jak1 kinase inhibitors useful in treating disorders related to Jak1 activities such as autoimmune diseases or disorders, inflammatory diseases or disorders, and cancer or neoplastic diseases or disorders.
    Type: Grant
    Filed: September 30, 2017
    Date of Patent: August 11, 2020
    Assignee: TLL Pharmaceutical, LLC
    Inventor: Congxin Liang
  • Publication number: 20190256523
    Abstract: The new 1H-furo[3,2-b]imidazo[4,5-d]pyridine derivatives are selective Jak1 kinase inhibitors useful in treating disorders related to Jak1 activities such as autoimmune diseases or disorders, inflammatory diseases or disorders, and cancer or neoplastic diseases or disorders.
    Type: Application
    Filed: September 30, 2017
    Publication date: August 22, 2019
    Inventor: Congxin Liang
  • Publication number: 20190248764
    Abstract: The new piperazine derivatives are modulators of TRPML and are useful in treating disorders related to TRPML activities such as lysosome storage diseases, muscular dystrophy, age-related common neurodegenerative diseases, oxidative stress or reactive oxygen species (ROS) related diseases, and ageing.
    Type: Application
    Filed: June 29, 2017
    Publication date: August 15, 2019
    Applicant: CalyGene Biotechnolgy, Inc.
    Inventor: Congxin Liang
  • Patent number: RE49834
    Abstract: The new 1H-furo[3,2-b]imidazo[4,5-d]pyridine derivatives are selective Jak1 kinase inhibitors useful in treating disorders related to Jak1 activities such as autoimmune diseases or disorders, inflammatory diseases or disorders, and cancer or neoplastic diseases or disorders.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: February 13, 2024
    Assignee: Hangzhou Highlightll Pharmaceutical Co., Ltd.
    Inventor: Congxin Liang
  • Patent number: RE50799
    Abstract: The new 1H-furo[3,2-b]imidazo[4,5-d]pyridine derivatives are selective Jak1 kinase inhibitors useful in treating disorders related to Jak1 activities such as autoimmune diseases or disorders, inflammatory diseases or disorders, and cancer or neoplastic diseases or disorders.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: February 17, 2026
    Assignee: Hangzhou Highlightll Pharmaceutical Co., Ltd
    Inventor: Congxin Liang