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).
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Patent number: 8927739Abstract: The present invention relates generally to an improved process for the preparation of 5-azaspiro[2.4]heptane-6-carboxylic acid and its derivatives which are useful intermediates in the synthesis of biologically active molecules, especially in the synthesis of hepatits C virus NS5A inhibitors.Type: GrantFiled: November 18, 2013Date of Patent: January 6, 2015Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Xiaowen Peng, In Jong Kim, Hui Cao, Datong Tang, Yat Sun Or, Guoqiang Wang, Guoyou Xu
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Patent number: 8921573Abstract: The present invention relates to processes and intermediates for the preparation of novel benzimidazole derivatives, especially in the synthesis of hepatitis C virus NS5A inhibitors.Type: GrantFiled: April 16, 2014Date of Patent: December 30, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Datong Tang, Guoyou Xu, Xiaowen Peng, Lu Ying, Ce Wang, Hui Cao, Jiang Long, In Jong Kim, Guoqiang Wang, Yao-Ling Qiu, Yat Sun Or
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Publication number: 20140341851Abstract: 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: ApplicationFiled: April 4, 2014Publication date: November 20, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: YAO-LING QIU, Ce Wang, Xiaowen Peng, Hui Cao, Lu Ying, Xuri Gao, Bin Wang, Yat Sun Or
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Publication number: 20140316143Abstract: The present invention relates to processes and intermediates for the preparation of novel benzimidazole derivatives, especially in the synthesis of hepatitis C virus NS5A inhibitors.Type: ApplicationFiled: April 16, 2014Publication date: October 23, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Datong Tang, Guoyou Xu, Xiaowen Peng, Lu Ying, Ce Wang, Hui Cao, Jiang Long, In Jong Kim, Guoqiang Wang, Yao-Ling Qiu, Yat Sun Or
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Publication number: 20140308243Abstract: 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: ApplicationFiled: April 16, 2014Publication date: October 16, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Yao-Ling Qiu, Hui Cao, Xiaowen Peng, Zhigang Chen, Yat Sun Or
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Patent number: 8822700Abstract: 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: GrantFiled: September 10, 2010Date of Patent: September 2, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Lu Ying, Xiaowen Peng, Yat Sun Or
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Patent number: 8815928Abstract: 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: GrantFiled: September 10, 2010Date of Patent: August 26, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yat Sun Or, Lu Ying, Xiaowen Peng, Ce Wang, Yao-Ling Qiu
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Patent number: 8785487Abstract: 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: GrantFiled: January 25, 2011Date of Patent: July 22, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Hui Cao, Yat Sun Or
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Patent number: 8778938Abstract: 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: GrantFiled: June 3, 2011Date of Patent: July 15, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Hui Cao, Xiaowen Peng, Datong Tang, Yat Sun Or
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Publication number: 20140193363Abstract: 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: ApplicationFiled: January 15, 2014Publication date: July 10, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Yat Sun Or
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Publication number: 20140187793Abstract: The present invention relates generally to an improved process for the preparation of 5-azaspiro[2.4]heptane-6-carboxylic acid and its derivatives which are useful intermediates in the synthesis of biologically active molecules, especially in the synthesis of hepatits C virus NS5A inhibitors.Type: ApplicationFiled: November 18, 2013Publication date: July 3, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Yao-Ling Qiu, Xiaowen Peng, In Jong Kim, Hui Cao, Datong Tang, Yat Sun Or, Guoqiang Wang, Guoyou Xu
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Publication number: 20140187780Abstract: The present invention discloses compounds of formula I, II or X, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.Type: ApplicationFiled: December 24, 2013Publication date: July 3, 2014Applicant: Enanta Pharmaceuticals, Inc.Inventors: In Jong Kim, Tongzhu Liu, Jiang Long, Guoqiang Wang, Yao-Ling Qiu, Heejin Kim, Yanchun Wang, Ly Tam Phan, Yat Sun Or
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Patent number: 8759332Abstract: 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: GrantFiled: September 10, 2010Date of Patent: June 24, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Yat Sun Or
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Publication number: 20140135485Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.Type: ApplicationFiled: October 7, 2013Publication date: May 15, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Yat Sun Or, Guoqiang Wang, Ly Tam Phan, Dequiang Niu, Nha Huu Vo, Yao-Ling Qiu, Yanchun Wang, Marina V. Busuek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Judson Farmer, Guoyou Xu
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Patent number: 8703938Abstract: 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: GrantFiled: September 10, 2010Date of Patent: April 22, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yat Sun Or, Ce Wang, Lu Ying, Xiaowen Peng, Yao-Ling Qiu
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Patent number: 8697704Abstract: 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: GrantFiled: August 11, 2011Date of Patent: April 15, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Xiaowen Peng, Ce Wang, Yat Sun Or
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Patent number: 8673954Abstract: 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: GrantFiled: October 4, 2011Date of Patent: March 18, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Lu Ying, Yat Sun Or
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Patent number: 8653070Abstract: 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: GrantFiled: December 14, 2010Date of Patent: February 18, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Ce Wang, Xiaowen Peng, Hui Cao, Lu Ying, Yat Sun Or
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Patent number: 8637561Abstract: 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: GrantFiled: February 17, 2010Date of Patent: January 28, 2014Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yao-Ling Qiu, Lu Ying, Ce Wang, Xiaowen Peng, Yat Sun Or
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Patent number: 8609648Abstract: 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: GrantFiled: June 15, 2010Date of Patent: December 17, 2013Assignee: Enanta Pharmaceuticals, Inc.Inventors: Yat Sun Or, Lu Ying, Xiaowen Peng, Datong Tang, Ce Wang, Yao-Ling Qiu