Patents by Inventor Fen-Er Chen

Fen-Er Chen 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).

  • PREPARATION METHOD OF (4S,5R)-SEMIESTER
    Publication number: 20110137046
    Abstract: A preparation method of (4S,5R)-semiester in which cycloanhydride conducts enantioselective ring-opening with alcohol in the presence of 9-epiquininurea. With this method, (4S,5R)-semiester is prepared at room temperature with high yield and high stereoselectivity.
    Type: Application
    Filed: June 5, 2009
    Publication date: June 9, 2011
    Inventors: Fen-Er Chen, Fei Xiong, Xu-Xiang Chen, Lei Zhao, Zhong-Hua Wang