Patents by Inventor Dae Hyan Cho

Dae Hyan Cho 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).

  • Inosine derivatives and production methods therefor
    Patent number: 8288526
    Abstract: The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: October 16, 2012
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takayoshi Torii, Kunisuke Izawa, Doo Ok Jang, Dae Hyan Cho
  • Inosine derivatives and production methods therefor
    Patent number: 8252920
    Abstract: The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: August 28, 2012
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takayoshi Torii, Kunisuke Izawa, Doo Ok Jang, Dae Hyan Cho
  • INOSINE DERIVATIVES AND PRODUCTION METHODS THEREFOR
    Publication number: 20110028706
    Abstract: The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).
    Type: Application
    Filed: July 30, 2010
    Publication date: February 3, 2011
    Applicant: Ajinomoto Co., Inc.
    Inventors: Takayoshi TORII, Kunisuke Izawa, Doo Ok Jang, Dae Hyan Cho
  • Inosine derivatives and production methods therefor
    Patent number: 7816513
    Abstract: The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 19, 2010
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takayoshi Torii, Kunisuke Izawa, Doo Ok Jang, Dae Hyan Cho