Patents Assigned to Zhejiang Jiuzhou Pharma Science & Technology Co., Ltd.
  • Publication number: 20170137386
    Abstract: The present invention relates to the technical field of ibrutinib, particularly to the technical field of ibrutinib intermediate compounds and preparation methods thereof. The intermediate compounds are represented by formula A, wherein, the dotted line represents a double bond or a single bond between carbon and oxygen.
    Type: Application
    Filed: April 21, 2015
    Publication date: May 18, 2017
    Applicant: ZHEJIANG JIUZHOU PHARMA SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Yunyu HUA, Xianyi ZHANG, Hongjun GAO, Yuanqiang LI, Daqing CHE
  • Patent number: 8962839
    Abstract: The present invention relates to a chiral spiro-pyridylamidophosphine ligand compound, synthesis method therefor and application thereof. The chiral spiro-pyridylamidophosphine compound is a compound having a structure of Formula (I), a racemate or optical isomer thereof, or a catalytically acceptable salt thereof, and is mainly characterized by having a chiral spiro-dihydro-indene skeleton in its structure. The chiral spiro-pyridylamidophosphine compound may be synthesized with optical active 7-diaryl/alkylphosphino-7?-amino-1,1?-spiro-dihydro-indene or substituted 7-diaryl/alkylphosphino-7?-amino-1,1?-spiro-dihydro-indene having a spiro-skeleton as chiral starting material. The chiral spiro-pyridylamidophosphine compound may be used as a chiral ligand in asymmetric hydrogenation of a carbonyl compound catalyzed by iridium, in which the reaction activity is very high, the amount of the catalyst may be 0.0001 mol %, and the enantioselectivity of the reaction is up to 99.9% ee.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: February 24, 2015
    Assignee: Zhejiang Jiuzhou Pharma Science & Technology Co., Ltd.
    Inventors: Qilin Zhou, Jianhua Xie, Xiaoyan Liu, Jianbo Xie, Lixin Wang
  • Patent number: 8871930
    Abstract: Disclosed is a preparation method of ?-imatinib mesylate. The reaction temperature of the method is low and the yield of the crystal is improved. Furthermore, the method is applicable to the industrial production.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: October 28, 2014
    Assignee: Zhejiang Jiuzhou Pharma Science & Technology Co., Ltd.
    Inventors: Xinyu Zhang, Jiankang Xu