Patents by Inventor Jianchong WANG

Jianchong WANG 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).

  • Patent number: 11459291
    Abstract: Provided is a method of preparation of (1R, 3S)-3-amino-1-cyclopentanol, the method including: contacting N-acylhydroxyamine and cyclopentadiene for an asymmetric cycloaddition, to yield a first intermediate I; hydrogenating the first intermediate I to yield a second intermediate II; hydrolyzing, ammonolyzing, hydrazinolyzing, or alcoholyzing an amido bond of the second intermediate II to yield a third intermediate III; and hydrogenating the third intermediate III to yield (1R, 3S)-3-amino-1-cyclopentanol.
    Type: Grant
    Filed: January 31, 2021
    Date of Patent: October 4, 2022
    Assignee: PORTON PHARMA SOLUTIONS LTD.
    Inventors: Wenqing Lin, Hongjie Zheng, Jianping Zhu, Yong Zhang, Jianchong Wang
  • Publication number: 20210147339
    Abstract: Provided is a method of preparation of (1R, 3S)-3-amino-1-cyclopentanol, the method including: contacting N-acylhydroxyamine and cyclopentadiene for an asymmetric cycloaddition, to yield a first intermediate I; hydrogenating the first intermediate I to yield a second intermediate II; hydrolyzing, ammonolyzing, hydrazinolyzing, or alcoholyzing an amido bond of the second intermediate II to yield a third intermediate III; and hydrogenating the third intermediate III to yield (1R, 3S)-3-amino-1-cyclopentanol.
    Type: Application
    Filed: January 31, 2021
    Publication date: May 20, 2021
    Inventors: Wenqing LIN, Hongjie ZHENG, Jianping ZHU, Yong ZHANG, Jianchong WANG