Patents by Inventor Maosheng Cheng

Maosheng Cheng 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).

  • OPTICALLY ACTIVE PHENYLETHANOL AMINES AND PREPARING METHOD THEREOF
    Publication number: 20100022656
    Abstract: The invention provides compounds of formula (I) having (?) or (+) configuration, or pharmaceutically acceptable salts thereof, wherein R1 is H or halo; R2 is CF3, CN, or halo; R3 is linear or branched alkyl having 1 to 6 carbon atoms, or cycloalkyl having 3 to 6 carbon atoms. The invention also relates to methods for preparing the said compounds and the composition comprising the same. The compounds of the present invention have the effect of ?2-receptor agonist and can be used for the treatment of asthma or bronchitis.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 28, 2010
    Applicant: SHENYANG PHARMACEUTICAL UNIVERSITY
    Inventors: Maosheng Cheng, Li Pan, Dongkai Wang, Ruijuan Xing, Xuyao Chen, Dongmei Zhao
  • Phenylethanolamine compounds as ?-receptor agonists, and methods of use and preparation thereof
    Patent number: 7098364
    Abstract: The invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein R1 is H, chlorine, or bromine; R2 is electron attractive groups selected from the group consisting of CF3, CN, fluorine, CH3SO3, CF3SO3, and NO2; R3 is linear or branched alkyl having 1 to 10 carbon atoms, linear or branched alkoxyalkyl having 2 to 10 carbon atoms, aliphatic alcohol having 1 to 10 carbon atoms, or cycloalkyl having 3 to 6 carbon atoms. The invention also relates to methods for preparing the said compounds and the composition comprising the same.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 29, 2006
    Assignees: Shenyang Pharmaceutical University, Jinzhou Jiutai Pharmaceutical Co., Ltd., China
    Inventors: Maosheng Cheng, Li Pan, Lie Ji, Li Zhang, Jianmin Shen, Guilan Song, Zhiging Li
  • Novel phenylethanolamine compounds having &bgr;2acceptor excitatory function and their preparation method
    Publication number: 20040266867
    Abstract: The invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein R1 is H, chlorine, or bromine; R2 is electron attractive groups selected from the group consisting of CF3, CN, fluorine, CH3SO3, CF3SO3, and NO2; R3 is linear or branched alkyl having 1 to 10 carbon atoms, linear or branched alkoxyalkyl having 2 to 10 carbon atoms, aliphatic alcohol having 1 to 10 carbon atoms, or cycloalkyl having 3 to 6 carbon atoms. The invention also relates to methods for preparing the said compounds and the composition comprising the same. The compounds of the present invention have the effect of &bgr;2-receptor agonist and can be used for the treatment of asthma and bronchitis.
    Type: Application
    Filed: August 16, 2004
    Publication date: December 30, 2004
    Inventors: Maosheng Cheng, Li Pan, Lie Ji, Li Zhang, Jianmin Shen, Guilan Song, Zhiging Li