Patents Assigned to SHANGHAI PARLING PHARMA-TECH. CO., LTD.
  • Patent number: 8658811
    Abstract: Described is a process for preparing docetaxel 1, including the following steps: a) hydroxyl acylation reaction of compound 2 and 3 to obtain compound 4; b) deprotection group R1 of the hydroxyl group of compound 4 obtained from step a to prepare compound 5; c) removing one tert-butoxycarbonyl of compound 5 obtained from step b to prepare compound 6; d) removing one acetyl of compound 6 obtained from step c to prepare compound 1; wherein, R1 represents tert-butyl dimethyl silyl, triethylsilyl, ethoxyethyl, tetrahydropyranyl, trichloroethoxycarbonyl or methoxymethyl, Boc is tert-butoxycarbonyl, Ac is acetyl, and Ph is phenyl. Also disclosed are intermediates of docetaxel and methods for preparation thereof.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: February 25, 2014
    Assignee: Shanghai Parling Pharma-Tech. Co., Ltd.
    Inventors: Xin Shen, Huaxing Zhan, Jidong Yang, Xiao He, Fuxing Lin, Shaohong Wu
  • Publication number: 20100311991
    Abstract: The present invention disclosed an process for preparing docetaxel 1, including the following steps: a) hydroxyl acylation reaction of compound 2 and 3 to obtain compound 4; b) deprotection group R1 of the hydroxyl group of compound 4 obtained from step a to prepare compound 5; c) removing one tert-butoxycarbonyl of compound 5 obtained from step b to prepare compound 6; d) removing one acetyl of compound 6 obtained from step c to prepare compound 1; wherein, R1 represents tert-butyl dimethyl silyl, triethylsilyl, ethoxyethyl, tetrahydropyranyl, trichloroethoxycarbonyl or methoxymethyl, Boc is tert-butoxycarbonyl, Ac is acetyl, and Ph is phenyl. The present invention also disclosed intermediates of docetaxel and methods for preparation thereof.
    Type: Application
    Filed: May 22, 2009
    Publication date: December 9, 2010
    Applicant: SHANGHAI PARLING PHARMA-TECH. CO., LTD.
    Inventors: Xin Shen, Huaxing Zhan, Jidong Yang, Xiao He, Fuxing Lin, Shaohong Wu