Patents by Inventor Maiko Hamada

Maiko Hamada 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: 11890288
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Grant
    Filed: July 20, 2023
    Date of Patent: February 6, 2024
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi Ohba, Yasuki Niwa, Tetsuji Matsudaira, Maiko Hamada, Ryuta Yamazaki, Tatsuya Ibuki
  • Publication number: 20230364105
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Application
    Filed: July 20, 2023
    Publication date: November 16, 2023
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
  • Patent number: 11802135
    Abstract: The present invention aims to provide a compound acting as a specific agonist for LPA4 receptors, and a pharmaceutical composition containing the compound. The present invention relates to a novel lysophosphatidic acid derivative having an agonistic action on LPA4 receptors and useful for the prophylaxis and/or treatment of diseases associated with angiogenesis abnormalities involving LPA4 receptors, diseases associated with vascular disorders, or the symptoms associated therewith, and a pharmaceutical composition containing the derivative.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: October 31, 2023
    Assignees: MITSUBISHI TANABE PHARMA CORPORATION, OSAKA UNIVERSITY
    Inventors: Maiko Hamada, Yuki Arai, Shuhei Yamakoshi, Hiroko Wada, Kazufumi Otsuki, Hiroaki Shitama, Nobuyuki Takakura
  • Publication number: 20230146717
    Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which is superior in an action inducing degradation of BRD4 protein and useful as a therapeutic agent for cancer. A compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the DESCRIPTION.
    Type: Application
    Filed: February 5, 2021
    Publication date: May 11, 2023
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Kiyomi OHBA, Yasuki NIWA, Tetsuji MATSUDAIRA, Maiko HAMADA, Ryuta YAMAZAKI, Tatsuya IBUKI
  • Publication number: 20230146210
    Abstract: The present invention aims to provide a compound acting as a specific agonist for LPA4 receptors, and a pharmaceutical composition containing the compound. The present invention relates to a novel lysophosphatidic acid derivative having an agonistic action on LPA4 receptors and useful for the prophylaxis and/or treatment of diseases associated with angiogenesis abnormalities involving LPA4 receptors, diseases associated with vascular disorders, or the symptoms associated therewith, and a pharmaceutical composition containing the derivative.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 11, 2023
    Applicants: MITSUBISHI TANABE PHARMA CORPORATION, OSAKA UNIVERSITY
    Inventors: Maiko HAMADA, Yuki ARAI, Shuhei YAMAKOSHI, Hiroko WADA, Kazufumi OTSUKI, Hiroaki SHITAMA, Nobuyuki TAKAKURA
  • Patent number: 11542273
    Abstract: Provided are a compound superior in a cytotoxic action on cancer cells, an action inducing degradation of BET protein in cancer cells, and an inhibitory action on the binding of BET protein and acetylated histone, and useful as an anticancer agent, a BET protein degradation inducer or a BET protein inhibitor. A compound represented by the following formula (I) wherein each symbol is as defined in the specification, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: January 3, 2023
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Ryuta Yamazaki, Tatsuya Ibuki, Yuichi Sawaguchi, Kiyomi Ohba, Maiko Hamada, Yasuki Niwa, Yuko Ishida, Hideto Maruyama, Shiki Matsuki, Minoru Tanaka
  • Publication number: 20210284654
    Abstract: Provided are a compound superior in a cytotoxic action on cancer cells, an action inducing degradation of BET protein in cancer cells, and an inhibitory action on the binding of BET protein and acetylated histone, and useful as an anticancer agent, a BET protein degradation inducer or a BET protein inhibitor.
    Type: Application
    Filed: July 4, 2019
    Publication date: September 16, 2021
    Applicants: MITSUBISHI TANABE PHARMA CORPORATION, KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Ryuta YAMAZAKI, Tatsuya IBUKI, Yuichi SAWAGUCHI, Kiyomi OHBA, Maiko HAMADA, Yasuki NIWA, Yuko ISHIDA, Hideto MARUYAMA, Shiki MATSUKI, Minoru TANAKA
  • Patent number: 10407408
    Abstract: Provided is a novel low-molecular-weight compound that suppresses production of induction type MMPs, particularly MMP-9, rather than production of hemostatic type MMP-2. The present invention relates to a compound represented by the following formula (I): wherein each symbol is as described in the DESCRIPTION. The compound has a selective MMP-9 production suppressive action, and is useful as a drug for the prophylaxis and/or treatment of autoimmune diseases such as rheumatoid arthritis and the like, inflammatory bowel diseases (ulcerative colitis, Crohn's disease) or osteoarthritis.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 10, 2019
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Seigo Ishibuchi, Kunio Saruta, Maiko Hamada, Nobuatsu Matoba, Tetsuji Matsudaira, Maki Seki, Akiko Tarao, Takashi Honjo, Shingo Ogata, Atsushi Kawata, Kenji Morokuma, Naoto Fujie, Yukio Aoyama
  • Publication number: 20190077787
    Abstract: Provided is a novel low-molecular-weight compound that suppresses production of induction type MMPs, particularly MMP-9, rather than production of hemostatic type MMP-2. The present invention relates to a compound represented by the following formula (I): wherein each symbol is as described in the DESCRIPTION. The compound has a selective MMP-9 production suppressive action, and is useful as a drug for the prophylaxis and/or treatment of autoimmune diseases such as rheumatoid arthritis and the like, inflammatory bowel diseases (ulcerative colitis, Crohn's disease) or osteoarthritis.
    Type: Application
    Filed: July 8, 2016
    Publication date: March 14, 2019
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Seigo ISHIBUCHI, Kunio SARUTA, Maiko HAMADA, Nobuatsu MATOBA, Tetsuji MATSUDAIRA, Maki SEKI, Akiko TARAO, Takashi HONJO, Shingo OGATA, Atsushi KAWATA, Kenji MOROKUMA, Naoto FUJIE, Yukio AOYAMA
  • Patent number: 9657043
    Abstract: The present invention provides a compound represented by the following formula (I): wherein each symbol is as described in the DESCRIPTION, which has a superior peripheral blood lymphocyte decreasing action, and is useful for the treatment or prophylaxis of autoimmune diseases; prophylaxis or suppression of resistance or acute rejection or chronic rejection of transplantation of organ or tissue; treatment or prophylaxis of graft-versus-host (GvH) disease due to bone marrow transplantation; or treatment or prophylaxis of allergic diseases.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: May 23, 2017
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Maiko Hamada, Kaoru Tashiro, Hiroshi Sakashita, Masatoshi Kiuchi, Shuzo Takeda, Kunitomo Adachi
  • Patent number: 9527859
    Abstract: The present invention relates to novel amidopyridine derivatives. More specifically, the present invention provides a medicinal agent which is useful as a prophylactic or therapeutic agent for diseases based on the production of cytokines from T cells, comprising as the active ingredient an amidopyridine derivative or a pharmacologically acceptable salt thereof. Provided are an amidopyridine derivative of the following general formula (I): wherein each symbol has the same meaning as defined in the description, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: December 27, 2016
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Masayuki Watanabe, Hiroyuki Furukawa, Maiko Hamada, Naoto Fujie, Hiroyuki Ushio, Tooru Takashima
  • Patent number: 9150555
    Abstract: The present invention relates to a novel amide derivative. More specifically, the present invention provides a medicinal agent useful as a prophylactic or therapeutic agent for diseases, which relies on the production of cytokines from T cells, and which comprises an amide derivative or a pharmacologically acceptable salt thereof or a solvate of the derivative or the pharmacologically acceptable salt as an active ingredient. Provided is an amide derivative represented by general formula (I) [wherein each symbol is as defined in the description] or a pharmacologically acceptable salt thereof, or a solvate of the derivative or the pharmacologically acceptable salt.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: October 6, 2015
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Hiroyuki Ushio, Maiko Hamada, Masayuki Watanabe, Atsushi Numata, Naoto Fujie, Tooru Takashima, Hiroyuki Furukawa, Junki Ando
  • Publication number: 20150087620
    Abstract: The present invention provides a compound represented by the following formula (I): wherein each symbol is as described in the DESCRIPTION, which has a superior peripheral blood lymphocyte decreasing action, and is useful for the treatment or prophylaxis of autoimmune diseases; prophylaxis or suppression of resistance or acute rejection or chronic rejection of transplantation of organ or tissue; treatment or prophylaxis of graft-versus-host (GvH) disease due to bone marrow transplantation; or treatment or prophylaxis of allergic diseases.
    Type: Application
    Filed: April 23, 2013
    Publication date: March 26, 2015
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Maiko Hamada, Kaoru Tashiro, Hiroshi Sakashita, Masatoshi Kiuchi, Shuzo Takeda, Kunitomo Adachi
  • Publication number: 20150065715
    Abstract: The present invention relates to novel amidopyridine derivatives. More specifically, the present invention provides a medicinal agent which is useful as a prophylactic or therapeutic agent for diseases based on the production of cytokines from T cells, comprising as the active ingredient an amidopyridine derivative or a pharmacologically acceptable salt thereof. Provided are an amidopyridine derivative of the following general formula (I): wherein each symbol has the same meaning as defined in the description, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: April 12, 2013
    Publication date: March 5, 2015
    Applicant: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masayuki Watanabe, Hiroyuki Furukawa, Maiko Hamada, Naoto Fujie, Hiroyuki Ushio, Tooru Takashima
  • Publication number: 20130211075
    Abstract: The present invention relates to a novel amide derivative. More specifically, the present invention provides a medicinal agent useful as a prophylactic or therapeutic agent for diseases, which relies on the production of cytokines from T cells, and which comprises an amide derivative or a pharmacologically acceptable salt thereof or a solvate of the derivative or the pharmacologically acceptable salt as an active ingredient. Provided is an amide derivative represented by general formula (I) [wherein each symbol is as defined in the description] or a pharmacologically acceptable salt thereof, or a solvate of the derivative or the pharmacologically acceptable salt.
    Type: Application
    Filed: October 13, 2011
    Publication date: August 15, 2013
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Hiroyuki Ushio, Maiko Hamada, Masayuki Watanabe, Atsushi Numata, Naoto Fujie, Tooru Takashima, Hiroyuki Furukawa, Junki Ando
  • Patent number: 8129361
    Abstract: Provided is a novel amine compound represented by the following formula (I) having a superior peripheral blood lymphocyte decreasing action and superior in the immunosuppressive action, rejection suppressive action and the like, which shows decreased side effects of, for example, bradycardia and the like, or a pharmaceutically acceptable acid addition salt thereof, or a hydrate thereof, or a solvate thereof. wherein each symbol is as defined in the specification.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: March 6, 2012
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masatoshi Kiuchi, Kaoru Tashiro, Maiko Hamada, Kunio Sugahara
  • Patent number: 8114902
    Abstract: Disclosed is a 2-aminobutanol compound represented by the following formula (I) or a pharmaceutically acceptable acid addition salt thereof, or a hydrate thereof, or a solvate thereof, as well as a production method of the 2-aminobutanol compound of formula (I). The 2-aminobutanol compounds of formula (I) have few side effects including bradycardia and have superior peripheral blood lymphocyte-decreasing effects.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: February 14, 2012
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masatoshi Kiuchi, Mitsuharu Nakamura, Maiko Hamada, Kunio Sugahara
  • Patent number: 8044042
    Abstract: A thienotriazolodiazepine compound of the following formula (I) a pharmaceutical agent containing the compound as an active ingredient, and a production intermediate and a production method of the thienotriazolodiazepine compound. Since this compound has an inhibitory action on costimulatory signal from CD28 on T cell, it is useful for the prophylaxis or suppression of rejection reaction in transplantation of organ or bone marrow and the like, and the prophylaxis or treatment of autoimmune diseases or allergic diseases.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Kunitomo Adachi, Hidemasa Hikawa, Maiko Hamada, Jun-ichi Endoh, Seigo Ishibuchi, Naoto Fujie, Minoru Tanaka, Kunio Sugahara, Kouichi Oshita, Meguru Murata
  • Patent number: 7935700
    Abstract: A compound represented by the formula (1) wherein ring A is aryl optionally having substituent(s) and the like; ring B is arylene optionally having substituent(s) and the like; m=0-2; n=1-5; X is a bond and the like; Y is a bond and the like; and Z is hydrogen atom and the like or a pharmaceutically acceptable salt thereof, and a hydrate or solvate thereof have affinity for CCR3, and can be pharmaceutical products for the treatment and/or prophylaxis of immune or inflammatory diseases.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: May 3, 2011
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Yoshihito Tanaka, Shuzo Takeda, Hidemitsu Higashi, Mamoru Matsuura, Fujio Kobayashi, Maiko Hamada, Minoru Tanaka
  • Publication number: 20100179216
    Abstract: Provided is a novel amine compound represented by the following formula (I) having a superior peripheral blood lymphocyte decreasing action and superior in the immunosuppressive action, rejection suppressive action and the like, which shows decreased side effects of, for example, bradycardia and the like, or a pharmaceutically acceptable acid addition salt thereof, or a hydrate thereof, or a solvate thereof. wherein each symbol is as defined in the specification.
    Type: Application
    Filed: June 13, 2008
    Publication date: July 15, 2010
    Inventors: Masatoshi Kiuchi, Kaoru Tashiro, Maiko Hamada, Kunio Sugahara