Patents by Inventor Yongbing Guo

Yongbing Guo 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).

  • Process for resolving S-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 8592625
    Abstract: The present invention relates to a process for resolving S-3-(Aminomethyl)-5-methylhexanoic acid, which adopts benzoyl-L-glutamic acid, 4-methyl benzoyl-L-glutamic acid, benzene sulfonyl-L-glutamic acid or 4-methyl benzene sulfonyl-L-glutamic acid as a resolution agent to make a first resolution to racemic 3-aminomethyl-5-methylhexanoic acid, and adopts the resolution agent same to that of the first resolution to make a second resolution to the first resolution product to obtain the second resolution product, thus the resolution salt product is obtained, and further hydrolyzed by an acid, the resolution agent is extracted to be separated, the pH is adjusted to be neutral, the product S-3-(Aminomethyl)-5-methylhexanoic acid, i.e.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: November 26, 2013
    Assignee: Zheinjiang Jiuzhou Pharmaceutical Co., Ltd.
    Inventors: Jiankang Xu, Da Zhang, Meiqi Ye, Jie Chen, Yongbing Guo, Yongjiang Hu
  • NEW PROCESS FOR RESOLVING S-3- (AMINOMETHYL)-5-METHYLHEXANOIC ACID
    Publication number: 20110098502
    Abstract: The present invention relates to a process for resolving S-3-(Aminomethyl)-5-methylhexanoic acid, which adopts benzoyl-L-glutamic acid, 4-methyl benzoyl-L-glutamic acid, benzene sulfonyl-L-glutamic acid or 4-methyl benzene sulfonyl-L-glutamic acid as a resolution agent to make a first resolution to racemic 3-aminomethyl-5-methylhexanoic acid, and adopts the resolution agent same to that of the first resolution to make a second resolution to the first resolution product to obtain the second resolution product, thus the resolution salt product is obtained, and further hydrolyzed by an acid, the resolution agent is extracted to be separated, the pH is adjusted to be neutral, the product S-3-(Aminomethyl)-5-methylhexanoic acid, i.e.
    Type: Application
    Filed: January 1, 2008
    Publication date: April 28, 2011
    Inventors: Jiankang Xu, Da Zhang, Meiqi Ye, Jie Chen, Yongbing Guo, Yongjiang Hu