Patents by Inventor Weiqiang Zhan

Weiqiang Zhan 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: 20230390231
    Abstract: The present invention relates to pharmaceutical compositions and methods for treating ischemic stroke in humans, using a tetrafluorobenzyl derivative of formula (I) or a pharmaceutically acceptable salt thereof conjointly with a thrombolytic drug, endovascular thrombectomy, or both (e.g., endovascular thrombectomy and a thrombolytic drug). Administration of a tetrafluorobenzyl derivative of formula (I) or its pharmaceutically acceptable salt can reduce reperfusion injury and other adverse events in patients conjointly receiving a thrombolytic drug, endovascular thrombectomy, or endovascular thrombectomy with a thrombolytic drug.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 7, 2023
    Inventors: Byoung Joo GWAG, Chun San An, Jing Yu Jin, Sung Ig Cho, Fangmeng Zhu, Xinliang Xu, Weiqiang Zhan, Fuxin Liu, Soon-Mi Won
  • Patent number: 11826329
    Abstract: The present invention relates to pharmaceutical compositions and methods for treating ischemic stroke in humans, using a tetrafluorobenzyl derivative of formula (I) or a pharmaceutically acceptable salt thereof conjointly with a thrombolytic drug, endovascular thrombectomy, or both (e.g., endovascular thrombectomy and a thrombolytic drug). Administration of a tetrafluorobenzyl derivative of formula (I) or its pharmaceutically acceptable salt can reduce reperfusion injury and other adverse events in patients conjointly receiving a thrombolytic drug, endovascular thrombectomy, or endovascular thrombectomy with a thrombolytic drug.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: November 28, 2023
    Assignee: GNT Pharma Co., Ltd.
    Inventors: Byoung Joo Gwag, Chun San An, Jing Yu Jin, Sung Ig Cho, Fangmeng Zhu, Xinliang Xu, Weiqiang Zhan, Fuxin Liu, Soon-Mi Won
  • Publication number: 20230270757
    Abstract: A salfaprodil freeze-dried powder injection, and a preparation method thereof and the use thereof are proposed. The preparation method may include adding salfaprodil into water for injection, filtering after the salfaprodil is completely dissolved, and adjusting pH of filtrate with an alkaline substance water solution. The method may also include adding the injection water to achieve a constant volume, filling with an inert gas for protection, and performing sterilization and filtration to obtain a salfaprodil solution, which is then freeze-dried to obtain the -salfaprodil freeze-dried powder injection.
    Type: Application
    Filed: July 27, 2021
    Publication date: August 31, 2023
    Inventors: Weiqiang ZHAN, Zhanguo WANG, Wei ZHANG, Lingyan FU, Qian LIN, Xiaoli CHEN, Guoyang LV, Liyin ZHONG, Xinliang XU, Fangmeng ZHU
  • Publication number: 20210283080
    Abstract: The present invention relates to pharmaceutical compositions and methods for treating ischemic stroke in humans, using a tetrafluorobenzyl derivative of formula (I) or a pharmaceutically acceptable salt thereof conjointly with a thrombolytic drug, endovascular thrombectomy, or both (e.g., endovascular thrombectomy and a thrombolytic drug). Administration of a tetrafluorobenzyl derivative of formula (I) or its pharmaceutically acceptable salt can reduce reperfusion injury and other adverse events in patients conjointly receiving a thrombolytic drug, endovascular thrombectomy, or endovascular thrombectomy with a thrombolytic drug.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventors: Byoung Joo Gwag, Chun San An, Jing Yu Jin, Sung Ig Cho, Fangmeng Zhu, Xinliang Xu, Weiqiang Zhan, Fuxin Liu, Soon-Mi Won
  • Publication number: 20170334885
    Abstract: This invention relates to pyrazole compounds or pharmaceutically acceptable salts thereof. Compounds of this invention are inhibitors of methionine aminopeptidase 2 (MetAP2) and dipeptidyl peptidase-4 (DPP-4). MetAP2 is a metalloproteinase that cleaves initiator methionine from nascent peptide emerging from the ribosomes. WO 2010/065879 reports small molecule MetAP2 inhibitors for obesity treatment. DPP-4 inhibitors are an established drug class to improve glycemic control in patients with type 2 diabetes mellitus. Compounds with dual inhibitory activity in both MetAP2 and DPP-4 are desired. The present invention provides novel compounds with dual MetAP2 and DPP-4 inhibitition. These dual inhibitor compounds can be useful in the treatment of a MetAP2 and DPP-4 mediated condition. The present invention provides a compound of the following Formula (I); or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: February 11, 2016
    Publication date: November 23, 2017
    Inventors: Koc Kan Ho, Weiqiang Zhan, Jingye Zhou
  • Patent number: 9822101
    Abstract: This invention relates to pyrazole compounds or pharmaceutically acceptable salts thereof. Compounds of this invention are inhibitors of methionine aminopeptidase 2 (MetAP2) and dipeptidyl peptidase-4 (DPP-4). MetAP2 is a metalloproteinase that cleaves initiator methionine from nascent peptide emerging from the ribosomes. WO 2010/065879 reports small molecule MetAP2 inhibitors for obesity treatment. DPP-4 inhibitors are an established drug class to improve glycemic control in patients with type 2 diabetes mellitus. Compounds with dual inhibitory activity in both MetAP2 and DPP-4 are desired. The present invention provides novel compounds with dual MetAP2 and DPP-4 inhibitition. These dual inhibitor compounds can be useful in the treatment of a MetAP2 and DPP-4 mediated condition. The present invention provides a compound of the following Formula (I); or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: November 21, 2017
    Assignee: Eli Lilly and Company
    Inventors: Koc Kan Ho, Weiqiang Zhan, Jingye Zhou
  • Publication number: 20160002174
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis.
    Type: Application
    Filed: July 2, 2015
    Publication date: January 7, 2016
    Inventors: Hyunsuk Shim, Dennis C. Liotta, James P. Snyder, Weiqiang Zhan, Zhongxing Liang
  • Publication number: 20140039187
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis.
    Type: Application
    Filed: February 13, 2012
    Publication date: February 6, 2014
    Inventors: Hyunsuk Shim, Dennis C. Liotta, James P. Snyder, Weiqiang Zhan, Zhongxing Liang
  • Patent number: 8114884
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: February 14, 2012
    Assignee: Emory University
    Inventors: Hyunsuk Shim, Dennis C. Liotta, James P. Snyder, Weiqiang Zhan, Zhongxing Liang
  • Patent number: 8080659
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors or for the treatment of viral infections. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis, or for reducing entry of HIV in to a cell while not reducing the capacity of the stem cells to proliferate. The compounds may be useful for long term treatment regimes.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: December 20, 2011
    Assignee: Emory University
    Inventors: Dennis C. Liotta, James P. Snyder, Weiqiang Zhan
  • Patent number: 8008312
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor, and in particular to inhibit viral entry of certain viruses. Certain compounds in particular can reduce entry of immunodeficiency virus (HIV) into a cell while not reducing the capacity of stem cells to proliferate, and therefore can be useful for long term treatment regimes. The compounds are useful in particular in the treatment or prevention of HIV infections.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: August 30, 2011
    Assignee: Emory University
    Inventors: Hyunsuk Shim, Dennis C. Liotta, James P. Snyder, Weiqiang Zhan, Zhongxing Liang
  • Publication number: 20090099194
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors or for the treatment of viral infections. The compounds provided interfere with the binding of SDF 1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis, or for reducing entry of HIV in to a cell while not reducing the capacity of the stem cells to proliferate. The compounds may be useful for long term treatment regimes.
    Type: Application
    Filed: July 11, 2007
    Publication date: April 16, 2009
    Inventors: Dennis C. Liotta, James P. Snyder, Weiqiang Zhan
  • Publication number: 20080227799
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis.
    Type: Application
    Filed: July 11, 2007
    Publication date: September 18, 2008
    Inventors: Dennis C. Liotta, James P. Snyder, Weiqiang Zhan
  • Publication number: 20070054930
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor for the treatment of proliferative conditions mediated by CXCR4 receptors. The compounds provided interfere with the binding of SDF1 to the receptor. These compounds are particularly useful for treating or reducing the severity of hyperproliferative diseases by inhibiting metastasis.
    Type: Application
    Filed: January 9, 2006
    Publication date: March 8, 2007
    Inventors: Hyunsuk Shim, Dennis Liotta, James Snyder, Weiqiang Zhan, Zhongxing Liang
  • Publication number: 20060264451
    Abstract: The invention provides compounds, pharmaceutical compositions and methods of use of certain compounds that are antagonists of the chemokine CXCR4 receptor, and in particular to inhibit viral entry of certain viruses. Certain compounds in particular can reduce entry of immunodeficiency virus (HIV) into a cell while not reducing the capacity of stem cells to proliferate, and therefore can be useful for long term treatment regimes. The compounds are useful in particular in the treatment or prevention of HIV infections.
    Type: Application
    Filed: January 9, 2006
    Publication date: November 23, 2006
    Inventors: Hyunsuk Shim, Dennis Liotta, James Snyder, Weiqiang Zhan, Zhongxing Liang