Patents by Inventor Zengxue Wang

Zengxue Wang 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).

  • Synthetic method for montelukast sodium intermediate
    Patent number: 8569508
    Abstract: A synthesis method for preparing Montelukast sodium intermediate 2-(2-(3-(2-(7-chloro-2-quinolyl)vinyl)phenyl-3-oxopropyl)phenyl) propanol is provided. In this method, the target compound is prepared by condensing the starting materials 7-chloroquinaldine and 3-cyanobenzaldehyde, and then reacting the resultant product with 2-(2-ortho-(2-haloethyl)-phenylpropyl)tetrahydropyrane ether. The present invention can easily obtain start materials and is applicable for mass production.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: October 29, 2013
    Assignee: Shandong New Time Pharmaceutical Co., Ltd.
    Inventors: Zhiquan Zhao, Haixin Wang, Zengxue Wang
  • SYNTHETIC METHOD FOR MONTELUKAST SODIUM INTERMEDIATE
    Publication number: 20120165535
    Abstract: A synthesis method for preparing Montelukast sodium intermediate 2-(2-(3-(2-(7-chloro-2-quinolyl)vinyl)phenyl-3-oxopropyl)phenyl) propanol is provided. In this method, the target compound is prepared by condensing the starting materials 7-chloroquinaldine and 3-cyanobenzaldehyde, and then reacting the resultant product with 2-(2-ortho-(2-haloethyl)-phenylpropyl)tetrahydropyrane ether. The present invention can easily obtain start materials and is applicable for mass production.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 28, 2012
    Applicant: SHANDONG NEW TIME PHARMACEUTICAL CO. LTD.
    Inventors: Zhiquan Zhao, Haixin Wang, Zengxue Wang