Patents by Inventor Yao-Ling Qiu

Yao-Ling Qiu 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: 20170253609
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y-L-R??(I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: March 6, 2017
    Publication date: September 7, 2017
    Inventors: Yao-Ling Qiu, Xuri Gao, Wei Li, Hui Cao, Meizhong Jin, Jorden Kass, Xiaowen Peng, Yat Sun Or
  • Patent number: 9732110
    Abstract: The present invention discloses compounds of formula (I), or a pharmaceutically acceptable salt thereof: which inhibit, preventing or treating abnormal cellular proliferation and/or a viral infection, particularly by HIV, HCV or HBV. Consequently, the compounds of the present invention interfere with the replication cycle of a virus and are also useful as antiviral agents, or interfere with host cellular biochemical process and are also useful as antiproliferative agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from viral infection and/or cell proliferation. The invention also relates to methods of treating a viral infection and/or cell proliferation in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: August 15, 2017
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yao-Ling Qiu, Hui Cao, Wei Li, Xuri Gao, Xiaowen Peng, Jorden Kass, Yat Sun Or
  • Publication number: 20170217974
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y-Z-R??(I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 3, 2017
    Inventors: Yat Sun Or, Meizhong Jin, Jorden Kass, Hui Cao, Xuri Gao, Wei Li, Xiaowen Peng, Yao-Ling Qiu
  • Patent number: 9676802
    Abstract: The present invention discloses compounds of Formula (I), and pharmaceutically acceptable salts, esters, or prodrugs thereof: Q-G-A-L-B—Z—W??(I), which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: June 13, 2017
    Assignee: ENANTA PHARMACEUTICALS, INC.
    Inventors: Yao-Ling Qiu, Hui Cao, Xiaowen Peng, Zhigang Chen, Yat Sun Or
  • Patent number: 9675632
    Abstract: The present invention discloses compounds of formula (I), or a pharmaceutically acceptable salt thereof: which inhibit, preventing or treating abnormal cellular proliferation and/or a viral infection, particularly by HIV, HCV or HBV. Consequently, the compounds of the present invention interfere with the replication cycle of a virus and are also useful as antiviral agents, or interfere with host cellular biochemical process and are also useful as antiproliferative agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from viral infection and/or cell proliferation. The invention also relates to methods of treating a viral infection and/or cell proliferation in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: June 13, 2017
    Assignee: ENANTA PHARMACEUTICALS, INC.
    Inventors: Yao-Ling Qiu, Xiaowen Peng, Xuri Gao, Hui Cao, Yat Sun Or
  • Publication number: 20170114046
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: October 31, 2016
    Publication date: April 27, 2017
    Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Yat Sun Or
  • Publication number: 20170022150
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A1-Y-A2-Z-L-R??(I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventors: Yao-Ling Qiu, Wei Li, Hui Cao, Meizhong Jin, Jorden Kass, Xuri Gao, Xiaowen Peng, Yat Sun Or
  • Publication number: 20170014408
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 19, 2017
    Inventors: Yao-Ling Qiu, Hui Cao, Wei Li, Xiaowen Peng, Meizhong Jin, Jorden Kass, Xuri Gao, Yat Sun Or
  • Publication number: 20160332996
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y—Z-L-R1??(I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 17, 2016
    Inventors: Yao-Ling Qiu, Wei Li, Hui Cao, Meizhong Jin, Xuri Gao, Xiaowen Peng, Jorden Kass, Yat Sun Or
  • Publication number: 20160289212
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y-Z-L-R1??(I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 6, 2016
    Inventors: Yao-Ling Qiu, Hui Cao, Wei Li, Jorden Kass, Xuri Gao, Xiaowen Peng, Meizhong Jin, Yat Sun Or
  • Publication number: 20160222034
    Abstract: The present invention discloses compounds of Formula (I), and pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: January 27, 2016
    Publication date: August 4, 2016
    Inventors: Yao-Ling Qiu, Hui Cao, Xiaowen Peng, Xuri Gao, Yat Sun Or, Zachary Kevin Sweeney
  • Publication number: 20160159843
    Abstract: The present invention discloses compounds of formula (I), or a pharmaceutically acceptable salt thereof: which inhibit, preventing or treating abnormal cellular proliferation and/or a viral infection, particularly by HIV, HCV or HBV. Consequently, the compounds of the present invention interfere with the replication cycle of a virus and are also useful as antiviral agents, or interfere with host cellular biochemical process and are also useful as antiproliferative agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from viral infection and/or cell proliferation. The invention also relates to methods of treating a viral infection and/or cell proliferation in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: December 4, 2015
    Publication date: June 9, 2016
    Inventors: Yao-Ling Qiu, Hui Cao, Wei Li, Xuri Gao, Xiaowen Peng, Jorden Kass, Yat Sun Or
  • Publication number: 20160058783
    Abstract: The present invention discloses compounds of formula (I), or a pharmaceutically acceptable salt thereof: which inhibit, preventing or treating abnormal cellular proliferation and/or a viral infection, particularly by HIV, HCV or HBV. Consequently, the compounds of the present invention interfere with the replication cycle of a virus and are also useful as antiviral agents, or interfere with host cellular biochemical process and are also useful as antiproliferative agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from viral infection and/or cell proliferation. The invention also relates to methods of treating a viral infection and/or cell proliferation in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 3, 2016
    Inventors: Yao-Ling Qiu, Xiaowen Peng, Xuri Gao, Hui Cao, Yat Sun Or
  • Patent number: 9156818
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The present invention relates to novel antiviral compounds represented herein above, pharmaceutical compositions comprising such compounds, and methods for the treatment or prophylaxis of viral (particularly HCV) infection in a subject in need of such therapy with compounds of Formula (I).
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: October 13, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Xiaowen Peng, Ce Wang, Lu Ying, Yao-Ling Qiu
  • Patent number: 9127021
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: September 8, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Yat Sun Or
  • Patent number: 9085599
    Abstract: The present invention relates to 2?-allene-substituted nucleoside derivatives of the general formula (I): As well as pharmaceutical compositions comprising such compounds and methods to treat or prevent an HIV infection, HBV infection, HCV infection or abnormal cellular proliferation, comprising administering said compounds or compositions. In addition, the present invention includes processes for the preparation of such compounds, and the related ?-D and ?-L-nucleoside derivatives.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 21, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Jun Ma, Guoqiang Wang, In Jong Kim, Jiang Long, Yao-Ling Qiu
  • Patent number: 9060971
    Abstract: The present invention relates to pharmaceutical agents administered to a subject either in combination or in series for the treatment of a flaviviridae viral infection, for example, hepatitis C virus (HCV), wherein treatment comprises administering a compound effective to inhibit the function of the HCV NS5A protein and an additional compound or combinations of compounds having anti-HCV activity.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: June 23, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Christopher M. Owens, Bradley B. Brasher, Yao-Ling Qiu, Lijuan Jiang
  • Patent number: 9000020
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 7, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yao-Ling Qiu, Ce Wang, Lu Ying, Xiaowen Peng, Yat Sun Or
  • Patent number: 8933110
    Abstract: The present invention discloses compounds of Formula (I), and pharmaceutically acceptable salts, esters, or prodrugs thereof: Q-G-A-L-B—W??(I), which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 13, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Hui Cao, Yat Sun Or
  • Patent number: 8927709
    Abstract: The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The present invention relates to novel antiviral compounds represented herein above, pharmaceutical compositions comprising such compounds, and methods for the treatment or prophylaxis of viral (particularly HCV) infection in a subject in need of such therapy with the compounds.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: January 6, 2015
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Yat Sun Or