Patents by Inventor Dae Yon Lee

Dae Yon 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).

  • Publication number: 20250367173
    Abstract: The present disclosure relates compounds for inhibiting ectonucleotide pyrophosphatase/phosphodiesterase-1 (ENPP-1), or a pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: June 14, 2023
    Publication date: December 4, 2025
    Inventors: Ju Hyeon Kim, Eun Mi Jung, Yeon Hee Lee, Jeong Hyun Kim, Dae Yon Lee, Pyoung Oh Yoon, Young Cheol Lee, Eun Ji Son, A-Ram Lee
  • Patent number: 12391690
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: August 19, 2025
    Assignee: LigaChem Biosciences Inc.
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Publication number: 20230123569
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Application
    Filed: December 1, 2022
    Publication date: April 20, 2023
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Patent number: 11548883
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: January 10, 2023
    Assignee: LegoChem Biosciences, Inc.
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Patent number: 10961242
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: March 30, 2021
    Assignee: LegoChem Biosciences, Inc.
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Publication number: 20200407350
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Application
    Filed: May 15, 2018
    Publication date: December 31, 2020
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Publication number: 20200172542
    Abstract: The present invention relates to novel compounds as autotoxin inhibitors for treatment and prophylaxis of conditions or a disorder caused by autotaxin activation or increased concentration of lysophosphatidic acid, and also a pharmaceutical composition containing the same. The novel compounds of the present invention are autotoxin inhibitors, and by inhibiting the production of lysophosphatidic acid, they are useful for treatment or prophylaxis of cardiovascular disorder, cancer, metabolic disorder, kidney disorder, liver disorder, inflammatory disorder, nervous system disorder, respiratory system disorder, fibrotic disease, ocular disorder, cholestatic and other forms of chronic pruritus, or acute or chronic organ transplant rejection.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Inventors: Dae Yon Lee, Sang Eun Chae, Eun Mi Jung, Eun Hye Yang, Yoon Jeong Choi, Chul-Woong Chung, Ju Hyun Shin, Yun Ki Kim, Hyun Jin Kwon, Jeong Hee Ryu, Eun Hye Ban, Yong Zu Kim, Yeong Soo Oh, Jeiwook Chae
  • Patent number: 9988372
    Abstract: The present invention relates to a novel crystalline form of 5-chloro-N-({(5S)-2-oxo-3-[4-(5,6-dihydro-4H-[1,2,4]triazin-1-yl)phenyl]-1,3-oxazolidin-5-yl}methyl)thiophene-2-carboxamide methanesulfonate and a pharmaceutical composition containing the same. The novel crystalline form of a compound according to the present invention exhibits excellent stability even in high-temperature and humidity environments, and thus can be favorably used to prevent or treat diseases, such as thrombosis, myocardial infarction, atherosclerosis, inflammation, stroke, angina pectoris, restenosis after angioplasty, and thromboembolism.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: June 5, 2018
    Assignees: GREEN CROSS CORPORATION, LEGOCHEM BIOSCIENCES, INC.
    Inventors: Soongyu Choi, Jungsub Choi, So-Hyun Yoon, Yoo Hoon Kim, Jae Yeon Kim, Suk Ho Lee, Young Lag Cho, Ho Young Song, Dae Yon Lee, Sung Yoon Baek, Sang Eun Chae, Tae Kyo Park, Sung Ho Woo, Yong Zu Kim
  • Publication number: 20170152251
    Abstract: The present invention relates to a novel crystalline form of 5-chloro-N-({(5S)-2-oxo-3-[4-(5,6-dihydro-4H-[1,2,4]triazin-1-yl)phenyl]-1,3-oxazolidin-5-yl}methyl)thiophene-2-carboxamide methanesulfonate and a pharmaceutical composition containing the same. The novel crystalline form of a compound according to the present invention exhibits excellent stability even in high-temperature and humidity environments, and thus can be favorably used to prevent or treat diseases, such as thrombosis, myocardial infarction, atherosclerosis, inflammation, stroke, angina pectoris, restenosis after angioplasty, and thromboembolism.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 1, 2017
    Applicants: GREEN CROSS CORPORATION, LEGOCHEM BIOSCIENCES,INC.
    Inventors: Soongyu CHOI, Jungsub CHOI, So-Hyun YOON, Yoo Hoon KIM, Jae Yeon KIM, Suk Ho LEE, Young Lag CHO, Ho Young SONG, Dae Yon LEE, Sung Yoon BAEK, Sang Eun CHAE, Tae Kyo PARK, Sung Ho WOO, Yong Zu KIM
  • Patent number: 8809541
    Abstract: Provided are heterocyclic compounds, having effects of treating and preventing inflammatory diseases and treating skin wounds, and particularly, exhibiting effects of recovering disrupted skin barriers, mitigating inflammation, and pruritus. Also, a composition containing the compound as an effective component can be used to mitigate various inflammatory diseases and protease activated receptor-2 (PAR-2)-overexpressed diseases, and can be particularly used as a composition having an anti-inflammatory function in inflammatory skin diseases including atopic dermatitis and the like, by inhibiting PAR-2 activity.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 19, 2014
    Assignee: Neopharm Co., Ltd.
    Inventors: Hyung Sub Gwak, Yong Zu Kim, Uk Il Kim, Byeong Deog Park, Tae Kyo Park, Sung Ho Woo, Joung Yul Yun, Dae Yon Lee, Hyang Sook Lee, Jeong Eun Jeon, Se Kyoo Jeong, Hyung Mook Choi
  • Publication number: 20130165652
    Abstract: The heterocyclic compound according to the present invention may treat and prevent inflammatory diseases and heal skin wounds, and particularly, have effects of recovering damaged skin barrier, reducing inflammation and pruritus in inflammatory skin diseases. In addition, the composition containing the compound according to the present invention as an active ingredient may be used to alleviate various inflammatory diseases and diseases in which PAR-2 is excessively expressed, and particularly, the composition may inhibit activity of PAR-2 in skin, such that the composition may be used as a composition having anti-inflammatory function in inflammatory skin diseases including atopic dermatitis, or the like.
    Type: Application
    Filed: August 25, 2011
    Publication date: June 27, 2013
    Applicant: NEOPHARM CO.,LTD.
    Inventors: Hyung Sub Gwak, Yong Zu Kim, Uk Il Kim, Byeong Deog Park, Tae Kyo Park, Sung Ho Woo, Joung Yul Yun, Dae Yon Lee, Hyang Sook Lee, Jeong Eun Jeon, Se Kyoo Jeong, Hyung Mook Choi
  • Publication number: 20130158047
    Abstract: Provided are heterocyclic compounds, having effects of treating and preventing inflammatory diseases and treating skin wounds, and particularly, exhibiting effects of recovering disrupted skin barriers, mitigating inflammation, and pruritus. Also, a composition containing the compound as an effective component can be used to mitigate various inflammatory diseases and protease activated receptor-2 (PAR-2)-overexpressed diseases, and can be particularly used as a composition having an anti-inflammatory function in inflammatory skin diseases including atopic dermatitis and the like, by inhibiting PAR-2 activity.
    Type: Application
    Filed: August 25, 2011
    Publication date: June 20, 2013
    Applicant: NEOPHARM CO., LTD.
    Inventors: Hyung Sub Gwak, Yong Zu Kim, Uk Il Kim, Byeong Deog Park, Tae Kyo Park, Sung Ho Woo, Joung Yul Yun, Dae Yon Lee, Hyang Sook Lee, Jeong Eun Jeon, Se Kyoo Jeong, Hyung Mook Choi
  • Patent number: 8288423
    Abstract: The present invention relates to novel oxazolidinone derivatives with cyclic amidines, and prodrugs, hydrates, solvates, isomers and pharmaceutically acceptable salts thereof, and processes for preparing the same, and pharmaceutical compositions comprising the same. The oxazolidinone derivatives with cyclic amidines, and prodrugs, hydrates, solvates, isomers and pharmaceutically acceptable salts thereof can be usefully employed as an anticoagulant for treating thromboembolism and tumors via inhibition of coagulation factor Xa.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: October 16, 2012
    Assignee: Legochem Bioscience Ltd.
    Inventors: Young Lag Cho, Ho Young Song, Dae Yon Lee, Sung Yoon Baek, Sang Eun Chae, Sang Hui Jo, Yeon Ok Kim, Hyang Sook Lee, Ju Hyun Park, Tae Kyo Park, Sung Ho Woo, Yong Zu Kim
  • Patent number: 8178525
    Abstract: Disclosed are novel oxazolidinone derivatives with cyclic amidoxime or cyclic amidrazone group, pharmaceutically acceptable salts thereof, methods for preparing the same and pharmaceutical compositions containing the same. The oxazolidinone derivatives with cyclic amidoxime or cyclic amidrazone group or the pharmaceutically acceptable salts thereof can be effectively used for the treatment of thromboembolism and tumor as an anticoagulant based on the inhibition of factor Xa.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: May 15, 2012
    Assignee: Legochem Bioscience Ltd.
    Inventors: Ho Young Song, Young Lag Cho, Dae Yon Lee, Hee Sock Park, Sung Yoon Baek, Sang Eun Chae, Sang Hui Jo, Yeon Ok Kim, Hyang Sook Lee, Ju Hyun Park, Tae Kyo Park, Sung Ho Woo, Yong Zu Kim
  • Publication number: 20110112083
    Abstract: The present invention relates to novel oxazolidinone derivatives with cyclic amidoxime or cyclic amidrazone group, pharmaceutically acceptable salts thereof, methods for preparing the same and pharmaceutical compositions comprising the same. The oxazolidinone derivatives with cyclic amidoxime or cyclic amidrazone group or the pharmaceutically acceptable salts thereof can be effectively used for the treatment of thromboembolism and tumor as an anticoagulant based on the inhibition of factor Xa.
    Type: Application
    Filed: June 5, 2009
    Publication date: May 12, 2011
    Applicant: LEGOCHEM BIOSCIENCE LTD.
    Inventors: Ho Young Song, Young Lag Cho, Dae Yon Lee, Hee Sock Park, Sung Yoon Baek, Sang Eun Chae, Sang Hui Jo, Yeon Ok Kim, Hyang Sook Lee, Ju Hyun Park, Tae Kyo Park, Sung Ho Woo, Yong Zu Kim
  • Publication number: 20100184781
    Abstract: The present invention relates to novel oxazolidinone derivatives with cyclic amidines, and prodrugs, hydrates, solvates, isomers and pharmaceutically acceptable salts thereof, and processes for preparing the same, and pharmaceutical compositions comprising the same. The oxazolidinone derivatives with cyclic amidines, and prodrugs, hydrates, solvates, isomers and pharmaceutically acceptable salts thereof can be usefully employed as an anticoagulant for treating thromboembolism and tumors via inhibition of coagulation factor Xa.
    Type: Application
    Filed: May 9, 2008
    Publication date: July 22, 2010
    Applicant: LEGOCHEM BIOSCIENCE LTD.
    Inventors: Young Lag Cho, Ho Young Song, Dae Yon Lee, Sung Yoon Baek, Sang Eun Chae, Sang Hui Jo, Yeon Ok Kim, Hyang Sook Lee, Ju Hyun Park, Tae Kyo Park, Sung Ho Woo, Yong Zu Kim
  • Patent number: 7652152
    Abstract: A method of preparing optically pure (S)-3-hydroxypyrrolidine is disclosed. The present invention provides a method of economically and industrially preparing optically and chemically pure (S)-3-hydroxypyrrolidine, through a process comprising introducing an amine protecting group by using optically pure 4-amino-(S)-2-hydroxybutylic acid as a starting material, reducing a carboxylic acid group into a primary alcohol, removing the amine protecting group to form an amine salt, halogenating the primary alcohol, and amine cyclization; and through a simple purification process, i.e., distillation under reduced pressure. As another method, the present invention provides a method of preparing optically and chemically pure (S)-3-hydroxypyrrolidine, through a process comprising esterifying optically pure 4-amino-(S)-2-hydroxybutylic acid as a starting material, lactam cyclization, and reduction.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: January 26, 2010
    Assignee: Chiroad Incorporate
    Inventors: Kyoung Rok Roh, Ji Sang Yoo, Jong Won Jang, Dae Yon Lee
  • Publication number: 20080214837
    Abstract: A method of preparing optically pure (S)-3-hydroxypyrrolidine is disclosed. The present invention provides a method of economically and industrially preparing optically and chemically pure (S)-3-hydroxypyrrolidine, through a process comprising introducing an amine protecting group by using optically pure 4-amino-(S)-2-hydroxybutylic acid as a starting material, reducing a carboxylic acid group into a primary alcohol, removing the amine protecting group to form an amine salt, halogenating the primary alcohol, and amine cyclization; and through a simple purification process, i.e., distillation under reduced pressure. As another method, the present invention provides a method of preparing optically and chemically pure (S)-3-hydroxypyrrolidine, through a process comprising esterifying optically pure 4-amino-(S)-2-hydroxybutylic acid as a starting material, lactam cyclization, and reduction.
    Type: Application
    Filed: July 19, 2006
    Publication date: September 4, 2008
    Inventors: Kyoung Rok Roh, Ji Sang Yoo, Jong Won Jang, Dae Yon Lee
  • Patent number: 6353139
    Abstract: A method for preparing ketones has advantages of improving yields and reducing the time of the reactions due to high efficiency of catalysts. Ketones are prepared by reacting an aliphatic or an aromatic aldehyde with a vinyl olefin having an aliphatic or aromatic alkyl moiety in the presence of a transition metal catalyst, 2-aminopyridine catalyst, a primary amine and an acid, as catalysts and additives.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: March 5, 2002
    Inventors: Chul Ho Jun, Dae Yon Lee, Hyuk Lee, Jun Bae Hong