Patents by Inventor Hiroki Kakuta

Hiroki Kakuta 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).

  • Patent number: 11103489
    Abstract: There is provided a drug for preventing or treating inflammatory bowel disease, comprising as an active ingredient an RXR agonist which is a compound represented by Formula (1). In Formula (1), it is preferred that: R1 is an alkyl group; R2 is an alkyl group; W is NR3, and R3 is an alkyl group; X1 is CH; Y1 is N; X2 and Y2 are CH; and Z is a carboxyl group. Thus, a drug capable of strongly preventing or treating inflammatory bowel disease while suppressing the onset of side effects is provided.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: August 31, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventor: Hiroki Kakuta
  • Patent number: 11026932
    Abstract: A method for treating an inflammatory respiratory disease, comprising administering an effective amount of an RXR agonist represented by formula (1) or (2) as an active ingredient. wherein D, R1, R2, X, Y, Z, R3, R4, X1, Y1, X2, Y2 and Z1 are defined.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 8, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Arihiko Kanehiro, Utako Fujii, Daisuke Morichika, Naohiro Oda, Nobuaki Miyahara, Akihiko Taniguchi, Hiroki Kakuta
  • Patent number: 10940210
    Abstract: The present invention provides: a complex of a mercaptoundecahydrodecaborate (BSH) and a peptide, the complex for boron neutron capture therapy (BNCT); a method for producing the complex; and a cancer therapy using the complex.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: March 9, 2021
    Assignee: National University Corporation Okayama University
    Inventors: Hideki Matsui, Shuichi Furuya, Hiroyuki Michiue, Hiroki Kakuta, Yasuaki Takeuchi
  • Patent number: 10894088
    Abstract: The present invention provides: a complex of a mercaptoundecahydrodecaborate (BSH) and a peptide, the complex for boron neutron capture therapy (BNCT); a method for producing the complex; and a cancer therapy using the complex.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: January 19, 2021
    Assignee: National University Corporation Okayama University
    Inventors: Hideki Matsui, Shuichi Furuya, Hiroyuki Michiue, Hiroki Kakuta, Yasuaki Takeuchi
  • Publication number: 20200397910
    Abstract: The present invention provides: a complex of a mercaptoundecahydrodecaborate (BSH) and a peptide, the complex for boron neutron capture therapy (BNCT); a method for producing the complex; and a cancer therapy using the complex.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 24, 2020
    Applicant: National University Corporation Okayama University
    Inventors: HIDEKI MATSUI, Shuichi Furuya, Hiroyuki Michiue, Hiroki Kakuta, Yasuaki Takeuchi
  • Publication number: 20200179353
    Abstract: A method for treating an inflammatory respiratory disease, comprising administering an effective amount of an RXR agonist represented by formula (1) or (2) as an active ingredient. wherein D, R1, R2, X, Y, Z, R3, R4, X1, Y1, X2, Y2 and Z1 are defined.
    Type: Application
    Filed: September 9, 2016
    Publication date: June 11, 2020
    Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Arihiko KANEHIRO, Utako FUJII, Daisuke MORICHIKA, Naohiro ODA, Nobuaki MIYAHARA, Akihiko TANIGUCHI, Hiroki KAKUTA
  • Publication number: 20200121800
    Abstract: The present invention provides: a complex of a mercaptoundecahydrodecaborate (BSH) and a peptide, the complex for boron neutron capture therapy (BNCT); a method for producing the complex; and a cancer therapy using the complex.
    Type: Application
    Filed: November 24, 2017
    Publication date: April 23, 2020
    Applicant: National University Corporation Okayama University
    Inventors: Hideki MATSUI, Shuichi FURUYA, Hiroyuki MICHIUE, Hiroki KAKUTA, Yusuaki TAKEUCHI
  • Patent number: 10285985
    Abstract: There is provided a pharmaceutical composition for treatment or prevention of a neurodegenerative disease, comprising an RXR agonist as an active ingredient, which is a compound represented by formula (1) or (2). The pharmaceutical composition is effective in treatment or prevention of neurodegenerative diseases such as dementia, Parkinson's disease and multiple sclerosis with reducing side effects such as enlargement of the liver and elevation of blood triglyceride level. In these formulas, A represents CMe2, N-methyl, N-ethyl or N-isopropyl; X represents N, CH or C—CF3; Y and Z represent N or CH; R1 represents methyl, hydroxy, methoxy or ethoxy; R2 represents H, methyl or ethyl; B represents NR3 or CHR3; R3 represents alkyl; and R4 represents H, halogen, alkyl, alkenyl, aryl, alkynyl, alkoxy or acyl.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 14, 2019
    Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventor: Hiroki Kakuta
  • Publication number: 20180185342
    Abstract: There is provided a drug for preventing or treating inflammatory bowel disease, comprising as an active ingredient an RXR agonist which is a compound represented by Formula (1). In Formula (1), it is preferred that: R1 is an alkyl group; R2 is an alkyl group; W is NR3, and R3 is an alkyl group; X1 is CH; Y1 is N; X2 and Y2 are CH; and Z is a carboxyl group. Thus, a drug capable of strongly preventing or treating inflammatory bowel disease while suppressing the onset of side effects is provided.
    Type: Application
    Filed: June 29, 2016
    Publication date: July 5, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventor: Hiroki KAKUTA
  • Publication number: 20180092888
    Abstract: There is provided a pharmaceutical composition for treatment or prevention of a neurodegenerative disease, comprising an RXR agonist as an active ingredient, which is a compound represented by formula (1) or (2). The pharmaceutical composition is effective in treatment or prevention of neurodegenerative diseases such as dementia, Parkinson's disease and multiple sclerosis with reducing side effects such as enlargement of the liver and elevation of blood triglyceride level. In these formulas, A represents CMe2, N-methyl, N-ethyl or N-isopropyl; X represents N, CH or C—CF3; Y and Z represent N or CH; R1 represents methyl, hydroxy, methoxy or ethoxy; R2 represents H, methyl or ethyl; B represents NR3 or CHR3; R3 represents alkyl; and R4 represents H, halogen, alkyl, alkenyl, aryl, alkynyl, alkoxy or acyl.
    Type: Application
    Filed: March 31, 2016
    Publication date: April 5, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventor: Hiroki KAKUTA
  • Patent number: 9724434
    Abstract: There is provided a lysine oligomer derivative, wherein an ?-amino group and a carboxyl group of lysines are linked via a peptide bond, and a group capable of generating or absorbing electromagnetic wave is bonded to a C-terminal carboxyl group, an N-terminal amino group and/or an ?-amino group. This lysine oligomer derivative has the characteristic of specifically accumulating in the cartilage matrix and can generate or absorb an electromagnetic wave, and is, therefore, useful as a cartilage tissue marker.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 8, 2017
    Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Toshitaka Oohashi, Hiroki Kakuta
  • Publication number: 20150080551
    Abstract: There is provided a lysine oligomer derivative, wherein an ?-amino group and a carboxyl group of lysines are linked via a peptide bond, and a group capable of generating or absorbing electromagnetic wave is bonded to a C-terminal carboxyl group, an N-terminal amino group and/or an ?-amino group. This lysine oligomer derivative has the characteristic of specifically accumulating in the cartilage matrix and can generate or absorb an electromagnetic wave, and is, therefore, useful as a cartilage tissue marker.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 19, 2015
    Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Toshitaka Oohashi, Hiroki Kakuta
  • Patent number: 8389538
    Abstract: Disclosed is a compound represented by the general formula shown below, which can bind to a retinoid X receptor (RXR), which is one of nuclear receptors, and exhibit an agonistic or antagonistic action. [Wherein, R1 is selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group and an aryl group. R2 is selected from the group consisting of an alkoxy group, an alkyl group, an alkenyl group, an alkynyl group and an aryl group. W is NR3 or CR3; and R3 is selected from a hydrogen, an alkyl group, an alkenyl group, an alkynyl group and an aryl group. X1 and Y1 are selected from CH or N. X2 and Y2 are selected from CH, CR4 or N. R4 is selected from an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a halogen, a nitro group and an amino group. Z is selected from a carboxylic acid, a carboxylate ester or a hydroxamic acid, which is bound directly or via an alkyl group, an alkenyl group or an alkynyl group.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: March 5, 2013
    Assignee: National University Corporation Okayama University
    Inventors: Hiroki Kakuta, Kenji Sasaki, Kayo Takamatsu, Atsushi Takano, Nobumasa Yakushiji, Kazunori Morohashi, Kenichi Morishita
  • Publication number: 20100120742
    Abstract: Disclosed is a compound represented by the general formula shown below, which can bind to a retinoid X receptor (RXR), which is one of nuclear receptors, and exhibit an agonistic or antagonistic action. [Wherein, R1 is selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group and an aryl group. R2 is selected from the group consisting of an alkoxy group, an alkyl group, an alkenyl group, an alkynyl group and an aryl group. W is NR3 or CR3; and R3 is selected from a hydrogen, an alkyl group, an alkenyl group, an alkynyl group and an aryl group. X1 and Y1 are selected from CH or N. X2 and Y2 are selected from CH, CR4 or N. R4 is selected from an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a halogen, a nitro group and an amino group. Z is selected from a carboxylic acid, a carboxylate ester or a hydroxamic acid, which is bound directly or via an alkyl group, an alkenyl group or an alkynyl group.
    Type: Application
    Filed: February 26, 2008
    Publication date: May 13, 2010
    Applicant: National University Corporation Okayama University
    Inventors: Hiroki Kakuta, Kenji Sasaki, Kayo Takamatsu, Atsushi Takano, Nobumasa Yakushji, Kazunore Morohashi, Kenichi Morishita
  • Publication number: 20100069443
    Abstract: This invention provides a novel COX-1-selective inhibitor. This invention relates to a novel compound represented by the formula below or a salt thereof. This invention also relates to an analgesic agent, an antiinflammatory agent, an antitumor agent, an antiplatelet aggregation agent, and a cyclooxygenase-1-selective inhibitor comprising, as an active ingredient, such compound or salt thereof.
    Type: Application
    Filed: September 7, 2007
    Publication date: March 18, 2010
    Applicant: National University Corporation Okayama University
    Inventors: Hiroki KAKUTA, Kenji SASAKI, Hiroyuki ODA, Xiaoxia ZHENG, Shun HARADA