Patents Assigned to NORTH CHINA PHARMACEUTICAL NEW DRUG R&D CO., LTD.
  • Preparation method for benzoxazoleoxazine ketone compound and intermediate and crystal form thereof
    Patent number: 10106557
    Abstract: A preparation method for a high-purity benzoxazoleoxazine ketone compound, a crystal form thereof, and an intermediate compound for preparing a compound of formula (I), and a preparation method therefor.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 23, 2018
    Assignee: NORTH CHINA PHARMACEUTICAL NEW DRUG R&D CO., LTD.
    Inventors: Shuhui Chen, Zhaozhong Ding, Gangli Gong, Xiaobing Yan, Wei Huang, Feng Guo, Baoling Duan, Renlong Gao, Pingfan Zhou, Xinhua Lu, Guimin Dong
  • PREPARATION METHOD FOR BENZOXAZOLEOXAZINE KETONE COMPOUND AND INTERMEDIATE AND CRYSTAL FORM THEREOF
    Publication number: 20170275299
    Abstract: A preparation method for a high-purity benzoxazoleoxazine ketone compound, a crystal form thereof, and an intermediate compound for preparing a compound of formula (I), and a preparation method therefor.
    Type: Application
    Filed: September 23, 2015
    Publication date: September 28, 2017
    Applicant: NORTH CHINA PHARMACEUTICAL NEW DRUG R&D CO., LTD.
    Inventors: Shuhui CHEN, Zhaozhong DING, Gangli GONG, Xiaobing YAN, Wei HUANG, Feng GUO, Baoling DUAN, Renlong GAO, Pingfan ZHOU, Xinhua LU, Guimin DONG