Patents by Inventor Myung-hee Chun

Myung-hee Chun 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 preparing 2-(4-chlorobenzoylamino)-3-[2 (1H)-quinolinon-4-yl] propionic acid
    Patent number: 6680386
    Abstract: The invention relates to a novel method for preparing 2-(4-chlorobenzoylamino)-3-[2(1H)-quinolinon-4-yl]propionic acid, also known as Rebamipide represented by the formula I and useful for treatment of peptic ulcer from alkyl 2-(4-chlorobenzoylamino)-2-alkoxycarbonyl-3-[2(1H)-quinolinon-4-yl]propionate represented by the formula II in the presence of a base solution for hydrolysis and decarboxylation to remove a carboxyl group.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: January 20, 2004
    Assignee: Kyung Dong Pharm., Co., Ltd.
    Inventors: Byoung-suk Lee, Myung-hee Chun
  • Process for preparing 2-(4-chlorobenzolamino)-3[ (1h)-quinolinon-4-yl] propionic acid
    Publication number: 20030087930
    Abstract: The invention relates to a novel method for preparing 2-(4-chlorobenzoylamino)-3-[2(1H)-quinolinon-4-yl]propionic acid, also known as Rebamipide represented by the formula I and useful for treatment of peptic ulcer from alkyl 2-(4-chlorobenzoylamino)-2-alkoxycarbonyl-3-[2(1H)-quinolinon-4-yl]propionate represented by the formula II in the presence of a base solution for hydrolysis and decarboxylation to remove a carboxyl group.
    Type: Application
    Filed: October 8, 2002
    Publication date: May 8, 2003
    Inventors: Byoung-suk Lee, Myung-Hee Chun