Patents by Inventor Won Koo Lee

Won Koo Lee 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 aziridine-2-carboxylate derivatives and a process for preparing them
    Patent number: 7268228
    Abstract: This invention relates to compounds of Formula I having an aziridine-2-carboxylic group and a menthol group, a process for preparing such compounds, a method for obtaining optically active aziridine-2-carboxylate derivatives by optical resolution of such compounds, and optically active aziridine-2-carboxylate derivatives obtained by the same method: wherein R1 is hydrogen; alkyl; cycloalkyl; 4-chlorophenyl; 4-methoxyphenyl; s-triazinyl or pyridinyl acyl; benzyl; hydrocarbon residue which may be substituted with a substituent selected from the group consisting of hydroxy, alkoxy, dialkylamino, phenyl, 4-chlorophenyl and 4-methoxyphenyl; 2,4-dimethoxyphenyl; substituted phenyl including (1R)-phenylethyl or (1S)-phenylethyl. Preferences are given to (1R)-phenylethyl and (1S)-phenylethyl. Menthol is selected from the group consisting of (+)-menthol and (?)-menthol.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: September 11, 2007
    Assignee: Imagene Co., Ltd.
    Inventors: Won Koo Lee, Chan Sun Park, Yeon Hwa Lim, Hyun J on Ha
  • Optically active aziridine-2-carboxylate derivatives and a process for preparing them
    Publication number: 20040030133
    Abstract: This invention relates to compounds of Formula I having an aziridine-2-carboxylic group and a menthol group, a process for preparing such compounds, a method for obtaining optically active aziridine-2-carboxylate derivatives by optical resolution of such compounds, and optically active aziridine-2-carboxylate derivatives obtained by the same method: 1
    Type: Application
    Filed: July 30, 2003
    Publication date: February 12, 2004
    Inventors: Won Koo Lee, Chan Sun Park, Yeon Hwa Lim, Hyun Joon Ha