Patents by Inventor Xizhou Lv

Xizhou Lv 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).

  • Process of preparing a quinazoline derivative
    Patent number: 9617227
    Abstract: A concise, efficient and cost- and time-saving process for the preparation of a quinazoline derivative of formula A given below: which is an intermediate for making gefitinib or gefitinib itself, comprising reacting a compound of Formula B: with 3-chloro-4-fluoroaniline (VI) in the presence of a N,N-dialkyl formamide acetal, a Bronsted acid catalyst, and a solvent in a one-pot reaction.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 11, 2017
    Assignee: SCINOPHARM (CHANGSHU) PHARMACEUTICALS, LTD.
    Inventors: Xiaoheng Zhang, Xizhou Lv
  • Process of Preparing a Quinazoline Derivative
    Publication number: 20160200688
    Abstract: A concise, efficient and cost- and time-saving process for the preparation of a quinazoline derivative of formula A given below: which is an intermediate for making gefitinib or gefitinib itself, comprising reacting a compound of Formula B: with 3-chloro-4-fluoroaniline (VI) in the presence of a N,N-dialkyl formamide acetal, a Bronsted acid catalyst, and a solvent in a one-pot reaction.
    Type: Application
    Filed: June 10, 2014
    Publication date: July 14, 2016
    Inventors: Xiaoheng Zhang, Xizhou Lv