Patents by Inventor Doo Ok Jang

Doo Ok Jang 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
  • Positively charged lipid and liposome with the lipid
    Publication number: 20050112185
    Abstract: The present invention relates to positively charged lipids prepared by linking salt forms of acidic amino acid with a variety of lengths of hydrocarbon chain, a process for preparing the lipids, and liposomes comprising the said positively charged lipids. Positively charged lipids of the invention can be practically applied for the preparation of liposomes for gene therapy, since they provide better characteristics than the conventional positively charged lipids in terms of gene delivery efficiency and biocompatibility.
    Type: Application
    Filed: September 16, 2004
    Publication date: May 26, 2005
    Inventors: Yong-Serk Park, Hong-Sung Kim, Jae-Ho Moon, Doo-Ok Jang, Yeon Heo