Patents by Inventor Guoyou Xu

Guoyou Xu 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).

  • 6-11 Bicyclic ketolide derivatives
    Publication number: 20050159370
    Abstract: 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: Application
    Filed: January 25, 2005
    Publication date: July 21, 2005
    Applicant: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Or, Guoqiang Wang, Ly Phan, Deqiang Niu, Nha Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Farmer, Guoyou Xu
  • Macrocyclic hepatitis C serine protease inhibitors
    Publication number: 20050153877
    Abstract: The present invention relates to compounds of Formula I, II or Ill, or a pharmaceutically acceptable salt, ester, or prodrug, thereof: wherein W is a substituted or unsubstituted heterocyclic ring system. The compounds inhibit serine protease activity, particularly the activity of hepatitis c virus (HCV) NS3-NS4A protease. 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: February 6, 2004
    Publication date: July 14, 2005
    Inventors: Zhenwei Miao, Ying Sun, Suanne Nakajima, Datong Tang, Frank Wu, Guoyou Xu, Yat Or, Zhe Wang
  • 6-11 bicyclic ketolide derivatives
    Patent number: 6878691
    Abstract: 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: Grant
    Filed: May 5, 2003
    Date of Patent: April 12, 2005
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Guoqiang Wang, Ly Tam Phan, Deqiang Niu, Nha Huu Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Judson Farmer, Guoyou Xu
  • 6-11 Bicyclic ketolide derivatives
    Publication number: 20050037982
    Abstract: 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: Application
    Filed: May 5, 2003
    Publication date: February 17, 2005
    Inventors: Yat Or, Guoqiang Wang, Ly Phan, Deqiang Niu, Nha Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Farmer, Guoyou Xu
  • Quinoxalinyl macrocyclic hepatitis C serine protease inhibitors
    Publication number: 20040266668
    Abstract: The present invention relates to compounds of Formula I or II, or a pharmaceutically acceptable salt, ester, or prodrug, thereof: 1
    Type: Application
    Filed: April 16, 2004
    Publication date: December 30, 2004
    Inventors: Suanne Nakajima, Miao Zhenwei, Ying Sun, Datong Tang, Guoyou Xu, Brian Porter, Yat Sun Or, Zhe Wang
  • Processes for the preparation of 6-11 bicyclic erythromycin derivatives
    Publication number: 20040171818
    Abstract: The present invention relates to processes and intermediates for the preparation of 6-11 bicyclic erythromycin derivatives.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 2, 2004
    Inventors: Guoyou Xu, Datong Tang, Yonghua Gai, Heejin Kim, Guoqiang Wang, Ly Tam Phan, Yat Sun Or, Zhe Wang