Patents by Inventor Seung-Bum Ha

Seung-Bum Ha 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).

  • Tricyclic benzoxaborole compound, preparation method and use thereof
    Patent number: 9676796
    Abstract: The present invention relates to a novel tricyclic benzoxaborole derivative, a preparation method thereof, and use of antibiotics pharmaceutical composition including the same as an active ingredient.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: June 13, 2017
    Assignee: DONG-A ST CO., LTD.
    Inventors: Soon-Hoe Kim, Weon-Bin Im, Seung-Bum Ha, Jung-Sang Park, Mi-Yeon Kim, Sung-Hak Choi, Hyun-Jung Sung
  • Tricyclic Benzoxaborole Compound, Preparation Method and Use Thereof
    Publication number: 20160168167
    Abstract: The present invention relates to a novel tricyclic benzoxaborole derivative, a preparation method thereof, and use of antibiotics pharmaceutical composition including the same as an active ingredient.
    Type: Application
    Filed: July 28, 2014
    Publication date: June 16, 2016
    Applicant: DONG-A ST CO., LTD.
    Inventors: Soon-Hoe Kim, Weon-Bin Im, Seung-Bum Ha, Jung-Sang Park, Mi-Yeon Kim, Sung-Hak Choi, Hyun-Jung Sung
  • Preparation method of 2-deoxy-L-ribose
    Patent number: 8114987
    Abstract: A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of: treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L-arabinopyranose; allowing the prepared 1-alkoxy-L-arabinopyranose to react with acyl chloride so as to prepare 1-alkoxy-2,3,4-triacyl-L-arabinopyranose; brominating the alkoxy group of the prepared 1-alkoxy-2,3,4-triacyl-L-arabinopyranose to prepare a 1-bromo-2,3,4-triacyl compound; allowing the prepared compound to react with zinc in the presence of ethyl acetate and an organic base so as to prepare glycal; treating the glycal with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose; treating the prepared 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose with a base to prepare 1-alkoxy-2-deoxy-L-ribopyranose; and hydrolyzing the prepared 1-alkoxy-2-deoxy-L-ribopyranose in the presence of an acid catalyst.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: February 14, 2012
    Assignee: Samchully Pharm. Co. Ltd.
    Inventors: Kyung-Il Kim, Seung-Bum Ha, Jae-Hoon Jeon, Soon-Jeong Kwon, Yong-Tae Kim, Ji-Suk Yun
  • PREPARATION METHOD OF 2-DEOXY-L-RIBOSE
    Publication number: 20090292117
    Abstract: A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of: treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L-arabinopyranose; allowing the prepared 1-alkoxy-L-arabinopyranose to react with acyl chloride so as to prepare 1-alkoxy-2,3,4-triacyl-L-arabinopyranose; brominating the alkoxy group of the prepared 1-alkoxy-2,3,4-triacyl-L-arabinopyranose to prepare a 1-bromo-2,3,4-triacyl compound; allowing the prepared compound to react with zinc in the presence of ethyl acetate and an organic base so as to prepare glycal; treating the glycal with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose; treating the prepared 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose with a base to prepare 1-alkoxy-2-deoxy-L-ribopyranose; and hydrolyzing the prepared 1-alkoxy-2-deoxy-L-ribopyranose in the presence of an acid catalyst.
    Type: Application
    Filed: October 24, 2007
    Publication date: November 26, 2009
    Applicant: SAMCHULLY PHARM. CO. LTD.
    Inventors: Kyung-ll Kim, Seung-Bum Ha, Jae-Hoon Jeon, Soon-Jeong Kwon, Yong-Tae Kim, Ji-Suk Yun