Patents Assigned to Shanghai Puyi Chemical Co., Ltd.
  • Brivaracetam intermediate, preparation method therefor, and preparation method for brivaracetam
    Patent number: 11518741
    Abstract: The present invention relates to a brivaracetam intermediate, a preparation method therefor, and a preparation method for brivaracetam. The steps of the method for preparing brivaracetam described in the present invention are short and the raw materials are cheap, moreover, the method is simple and highly effective without requiring isomer separation by means of column chromatography or asymmetric synthesis, being suitable for industrial large-scale production. In addition, disclosed by the present invention is a compound as shown in formula (II), which may be used for the synthesis of brivaracetam.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: December 6, 2022
    Assignee: SHANGHAI PUYI CHEMICAL CO., LTD.
    Inventors: Hanrong Yang, Yantao Qi, Tao Li, Bo Wang
  • BRIVARACETAM INTERMEDIATE, PREPARATION METHOD THEREFOR, AND PREPARATION METHOD FOR BRIVARACETAM
    Publication number: 20210253523
    Abstract: The present invention relates to a brivaracetam intermediate, a preparation method therefor, and a preparation method for brivaracetam. The steps of the method for preparing brivaracetam described in the present invention are short and the raw materials are cheap, moreover, the method is simple and highly effective without requiring isomer separation by means of column chromatography or asymmetric synthesis, being suitable for industrial large-scale production. In addition, disclosed by the present invention is a compound as shown in formula (II), which may be used for the synthesis of brivaracetam.
    Type: Application
    Filed: October 30, 2018
    Publication date: August 19, 2021
    Applicant: SHANGHAI PUYI CHEMICAL CO., LTD.
    Inventors: Hanrong YANG, Yantao QI, Tao LI, Bo WANG
  • Thiazole compounds, methods for preparation and use thereof
    Patent number: 9216962
    Abstract: The present invention relates to thiazole compounds of formula I, the method for preparation and use thereof. More specifically, the present invention relates to novel derivatives of natural product largazole, the method for preparing them and their uses for treatments against tumor and multiple sclerosis as inhibitors of histone deacetylase.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: December 22, 2015
    Assignee: Shanghai Puyi Chemical Co., Ltd.
    Inventors: Fajun Nan, Fei Chen, Yangming Zhang, Jia Li, Yubo Zhou, Mingbo Su, Jian Ding, Linghua Meng, Xin Xie, Shixian Wang