Patents by Inventor Lina QIAN

Lina QIAN 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: 20240034729
    Abstract: Disclosed by the invention is a heterocyclic compound, an intermediate, and a preparation method therefor and an application thereof. Provided by the invention are a heterocyclic compound as shown in formula I, and a stereoisomer, a geometric isomer, a tautomer, a nitrogen oxide, a hydrate, a solvate, a metabolite, an ester, a pharmaceutically acceptable salt or a prodrug thereof. The heterocyclic compound has a high P2X3 antagonistic activity, and has good selectivity, low toxicity, good metabolic stability and little taste influence.
    Type: Application
    Filed: December 27, 2019
    Publication date: February 1, 2024
    Inventors: Jun LOU, Yongkai CHEN, Junhua LIU, Yihan ZHANG, Xiaodan GUO, Li LIU, Lina QIAN, Chaodong WANG
  • Publication number: 20230406850
    Abstract: Provided are a crystalline form of a compound represented by formula A, the crystalline form being crystalline form I, crystalline form II, crystalline form III, crystalline form IV, crystalline form V, crystalline form VI, crystalline form VII, crystalline form VIII or crystalline form IX, a preparation method therefor, a composition thereof, and an application thereof in the preparation of a P2X3 receptor antagonist or an application thereof in the preparation of drugs preventing and/or treating pains, urinary tract illness or respiratory system illness. The compound has high P2X3 antagonist activity, and has good selectivity, low toxicity, good metabolic stability and little taste influence.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 21, 2023
    Inventors: Liang Wang, Jun Lou, Huayun Hong, Xiaodan Guo, Lina Qian, Yihan Zhang, Yongkai Chen, Chaodong Wang
  • Publication number: 20230183182
    Abstract: A compound containing a benzene ring as shown in formula I, a pharmaceutically acceptable salt thereof, a stereoisomer thereof, a tautomer thereof, an isotopic compound thereof, a crystal form thereof, a nitrogen oxide thereof, and a solvate thereof or a solvate of the pharmaceutically acceptable salt thereof are provided. The compound has high P2X4 antagonistic activity, good selectivity, low toxicity and good metabolic stability.
    Type: Application
    Filed: November 27, 2020
    Publication date: June 15, 2023
    Inventors: Jun LOU, Yongkai CHEN, Yihan ZHANG, Xiaodan GUO, Lina QIAN, Li LIU, Wei PENG, Fei RONG, Chaodong WANG
  • Publication number: 20230118751
    Abstract: Disclosed is a fused ring compound and an application thereof. Disclosed is a fused ring compound represented by formula I, a pharmaceutically acceptable salt, a stereoisomer, a tautomer, an isotope compound, a crystal form, a nitrogen oxide, a solvate, or a solvate of the pharmaceutically acceptable salt thereof. The fused ring compound of the present invention has high P2X4 antagonistic activity, excellent selectivity, low toxicity and excellent metabolic stability.
    Type: Application
    Filed: December 29, 2020
    Publication date: April 20, 2023
    Inventors: Jun Lou, Yongkai Chen, Yihan Zhang, Xiaodan Guo, Lina Qian, Li Liu, Wei Peng, Fei Rong, Chaodong Wang
  • Publication number: 20230104283
    Abstract: A compound of formula (I), and racemates, stereoisomers, tautomers, isotopic markers, solvates, polymorphs and oxynitrides of the compound, or a pharmaceutically acceptable salt thereof can be used as JNK inhibitors. A method for preparing the compound of formula (I) and a pharmaceutical composition comprising the compound of formula (I) are provided. The compound of formula (I) can be used for preparing drugs. The resulting drugs are used for treating diseases that can be treated by inhibiting JNK activity.
    Type: Application
    Filed: September 21, 2020
    Publication date: April 6, 2023
    Inventors: Jinping LI, Jun LOU, Yongkai CHEN, Xiaodan GUO, Yihan ZHANG, Xian ZENG, Lina QIAN, Chaodong WANG
  • Publication number: 20230068538
    Abstract: Disclosed by the invention is a heterocyclic compound, an intermediate, and a preparation method therefor and an application thereof. Provided by the invention are a heterocyclic compound as shown in formula I, and a stereoisomer, a geometric isomer, a tautomer, a nitrogen oxide, a hydrate, a solvate, a metabolite, an ester, a pharmaceutically acceptable salt or a prodrug thereof. The heterocyclic compound has a high P2X3 antagonistic activity, and has good selectivity, low toxicity, good metabolic stability and little taste influence.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 2, 2023
    Inventors: Jun LOU, Yongkai CHEN, Junhua LIU, Yihan ZHANG, Xiaodan GUO, Li LIU, Lina QIAN, Chaodong WANG
  • Patent number: 11337972
    Abstract: A pharmaceutical preparation includes a first active component, a second active component and pharmaceutically acceptable excipients. The first active component is at least one selected from the group consisting of a neutral endopeptidase inhibitor and a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, a prodrug and a solvate thereof. The second active component is at least one selected from the group consisting of a compound represented by the following formula (I) or a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, a prodrug and a solvate thereof. The pharmaceutically acceptable excipients include one or more disintegrants and/or one or more fillers.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 24, 2022
    Assignees: WUHAN LL SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD., WUHAN QR PHARMACEUTICALS CO., LTD., WUHAN ZY PHARMACEUTICALS CO., LTD.
    Inventors: Xiaojing Hu, Lina Qian, Zhichao Zhang, Yuanping Wang, Yongkai Chen, Wei Feng, Wenwen Qi, Chaodong Wang
  • Publication number: 20220079928
    Abstract: Certain compounds are lysophosphatidic acid receptor antagonists have high LPAR1 antagonist activity and selectivity, low toxicity, good metabolic stability, promising pharmaceutical development prospects, and may be used for preventing or treating LPAR1-related diseases or illnesses. The IC50 values of some of the compounds may be as low as 300 nM or below, even 50 nM or below. In addition, CC50 value range of the compounds may be as high as 200 ?M or above. Furthermore, the compounds have good metabolic stability in humans, mice and rats.
    Type: Application
    Filed: January 15, 2020
    Publication date: March 17, 2022
    Inventors: Jun LOU, Yongkai CHEN, Wei PENG, Yihan ZHANG, Xiaodan GUO, Li LIU, Junhua LIU, Lina QIAN, Chaodong WANG
  • Publication number: 20220073476
    Abstract: Certain triazole compounds have good LPAR1 antagonistic activity and selectivity, low toxicity, and good metabolic stability, and can be used for preventing or treating the LPAR1-related disease or disorder. The IC50 value of some triazole compounds can be below 300 nM, even 50 nM. The range of CC50 of the triazole compounds can be greater than 200 ?M. They also show good metabolic stability in human, fancy rats, and house mice.
    Type: Application
    Filed: January 15, 2020
    Publication date: March 10, 2022
    Inventors: Jun LOU, Yongkai CHEN, Wei PENG, Yihan ZHANG, Xiaodan GUO, Li LIU, Junhua LIU, Lina QIAN, Chaodong WANG
  • Publication number: 20210052579
    Abstract: A pharmaceutical preparation includes a first active component, a second active component and pharmaceutically acceptable excipients. The first active component is at least one selected from the group consisting of a neutral endopeptidase inhibitor and a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, a prodrug and a solvate thereof. The second active component is at least one selected from the group consisting of a compound represented by the following formula (I) or a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, a prodrug and a solvate thereof. The pharmaceutically acceptable excipients include one or more disintegrants and/or one or more fillers.
    Type: Application
    Filed: March 8, 2019
    Publication date: February 25, 2021
    Applicants: Wuhan ll Science and Technology Development Co., Ltd., Wuhan qr Pharmaceuticals Co., Ltd., Wuhan zy Pharmaceuticals Co., Ltd.
    Inventors: Xiaojing HU, Lina QIAN, Zhichao ZHANG, Yuanping WANG, Yongkai CHEN, Wei FENG, Wenwen QI, Chaodong WANG
  • Publication number: 20190083459
    Abstract: Disclosed is a pharmaceutical composition, comprising a first component and a second component, wherein the first component is selected from at least one of a farnesoid X receptor agonist and a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, an ester and a solvate thereof; and the second component is selected from at least one of a NPC1L1 receptor inhibitor and a precursor, an active metabolite, a stereoisomer, a pharmaceutically acceptable salt, an ester and a solvate thereof. The composition can be used in preventing and/or treating non-alcoholic fatty liver disease, diabetes or cardiovascular disease.
    Type: Application
    Filed: March 24, 2017
    Publication date: March 21, 2019
    Inventors: Xiaoyu LIU, Faming ZHANG, Jian CUI, Sihan ZHANG, Huojian WANG, Yuan MENG, Zhengwen LENG, Lina QIAN