Patents by Inventor Kyoo Woong Lee

Kyoo Woong 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).

  • Process for preparing a 1-substituted 5-hydroxymethyl imidazole
    Patent number: 6630593
    Abstract: A process for preparing a 1-substituted 5-hydroxymethylimidazole of the formula: , wherein R represents alkyl, hydroxyalkyl, allyl, or substituted or unsubstituted arylmethyl or diarylmethyl, comprising the step of reacting a 1-substituted 2-mercapto-5-hydroxymethylimidazole of the formula: , wherein R is as defined above, in the presence of a transition metal catalyst and an oxidizing agent in a solvent.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: October 7, 2003
    Assignee: LG Chem Investment Ltd.
    Inventors: Hyun-Ik Shin, Jay-Hyok Chang, Kyoo-Woong Lee, Hyun-Il Lee, Sung-Kee Kim, Do-Hyun Nam
  • Process for preparing 4-substituted 1H-pyrrole-3-carboxylic acid ester
    Patent number: 6559320
    Abstract: The present invention relates to a novel process for preparing pyrrole ester compounds, which are key intermediates in the preparation of farnesyl transferase inhibitors, an anti-cancer agent Horner-Emmons reaction of aldehyde compounds provides the corresponding &agr;,&bgr;-unsaturated esters, which without any separation and/or purification steps, are treated with toluenesutfonyl-methylisocyanate in the presence of base to give pyrrole esters in one-pot fashion.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 6, 2003
    Assignee: LG Chem Investment Ltd.
    Inventors: Hyun Ik Shin, Sung Tak Oh, Jay Hyok Chang, Kyoo Woong Lee
  • NOVEL PROCESS FOR PREPARING 4-SUBSTITUTED-1H-PYRROLE-3-CARBOXYLIC ACID ESTER
    Publication number: 20030069432
    Abstract: The present invention relates to a novel process for preparing pyrrole ester compounds, which are key intermediates in the preparation of farnesyl transferase inhibitors, an anti-cancer agent. Horner-Emmons reaction of aldehyde compounds provides the corresponding &agr;,&bgr;-unsaturated esters, which without any separation and/or purification steps, are treated with toluenesulfonylmethylisocyanate in the presence of base to give pyrrole esters in one-pot fashion.
    Type: Application
    Filed: August 22, 2002
    Publication date: April 10, 2003
    Inventors: Hyun Ik Shin, Sung Tak Oh, Jay Hyok Chang, Kyoo Woong Lee