Patents by Inventor Wansong Yu

Wansong Yu 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).

  • METHOD OF PREPARING EZETIMIBE
    Publication number: 20150018565
    Abstract: A method of preparing ezetimibe. The method includes converting a compound of formula (II) to a compound of formula (III) as shown below: in which R1-R5, A1, and A2 are defined in the specification.
    Type: Application
    Filed: September 17, 2013
    Publication date: January 15, 2015
    Applicant: Heading (Nanjing) Pharmaceutical Technologies Co., Ltd.
    Inventors: Wensen Li, Laiyue Liu, Aichen Tang, Yanmin Wang, Hailong Wang, Wansong Yu
  • Hexahydropyrrolo[3,4-b]pyrrole derivatives, preparation methods and pharmaceutical uses thereof
    Patent number: 8785477
    Abstract: Hexahydropyrrolo[3,4-b]pyrrole derivatives, preparation methods and pharmaceutical uses thereof are provided. Specifically, dipeptidyl peptidase IV inhibitors presented by following formula (I) are provided. Such compounds can be used for treating or preventing the diseases associated with dipeptidyl peptidase IV, such as diabetes, obesity and hyperlipemia. The compounds presented by formula (I) and pharmaceutically acceptable salts thereof, a method for preparing a pharmaceutical composition thereof and their uses in the manufacture of medicaments for treating or preventing the disease associated with dipeptidyl peptidase IV are provided.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: July 22, 2014
    Assignee: Shanghai Sun-Sail Pharmaceutical Science & Technology Co., Ltd.
    Inventors: Peng Lu, Rui Zhang, Wansong Yu, Mingjie Zhu, Yilang Chen
  • HEXAHYDROPYRROLO[3,4-b]PYRROLE DERIVATIVES, PREPARATION METHODS AND PHARMACEUTICAL USES THEREOF
    Publication number: 20130178500
    Abstract: Hexahydropyrrolo[3,4-b]pyrrole derivatives, preparation methods and pharmaceutical uses thereof are provided. Specifically, dipeptidyl peptidase IV inhibitors presented by following formula (I) are provided. Such compounds can be used for treating or preventing the diseases associated with dipeptidyl peptidase IV, such as diabetes, obesity and hyperlipemia. The compounds presented by formula (I) and pharmaceutically acceptable salts thereof, a method for preparing a pharmaceutical composition thereof and their uses in the manufacture of medicaments for treating or preventing the disease associated with dipeptidyl peptidase IV are provided.
    Type: Application
    Filed: November 26, 2012
    Publication date: July 11, 2013
    Inventors: Peng Lu, Rui Zhang, Wansong Yu, Mingjie Zhu, Yilang Chen