Patents by Inventor Gyoung-Dong Kang

Gyoung-Dong Kang 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).

  • Pyrrolobenzodiazepines as key intermediates in the synthesis of dimeric cytotoxic pyrrolobenzodiazepines
    Patent number: 7557099
    Abstract: Compounds and a method of synthesis of compounds of formula (Ia) or (Ib): and salts, solvates, and chemically protected forms thereof, wherein the dotted lines indicate the optional presence of a double bond between C1 and C2 or C2 and C3; R2 and R3 are independently selected from —H, ?O, ?CH2, —CN, —R, OR, halo, ?CH—R, O—SO2—R, CO2R and COR; R10 is a carbamate-based nitrogen protecting group; and R11 is an oxygen protecting group.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: July 7, 2009
    Assignee: Spirogen Limited
    Inventors: Philip Wilson Howard, Gyoung-Dong Kang
  • Pyrrolobenzodiazepines as key intermediates in the synthesis of dimeric cytotoxic pyrrolobenzodiazepines
    Publication number: 20070191309
    Abstract: Compounds and a method of synthesis of compounds of formula (Ia) or (Ib): and salts, solvates, and chemically protected forms thereof, wherein the dotted lines indicate the optional presence of a double bond between C1 and C2 or C2 and C3; R2 and R3 are independently selected from —H, ?O, ?CH2, —CN, —R, OR, halo, ?CH—R, O—SO2—R, CO2R and COR; R10 is a carbamate-based nitrogen protecting group; and R11 is an oxygen protecting group.
    Type: Application
    Filed: March 1, 2005
    Publication date: August 16, 2007
    Applicant: Spirogen Limited
    Inventors: Philip Howard, Gyoung-Dong Kang