Patents by Inventor Masatoshi Kiuchi

Masatoshi Kiuchi 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: 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
  • 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: 20140296183
    Abstract: A novel amine compound represented by the following formula (I), which is superior in immunosuppressive action, rejection suppressive action and the like, and shows reduced side effects such as bradycardia and the like, or a pharmaceutically acceptable acid addition salt thereof, or hydrates thereof, or solvate, as well as a pharmaceutical composition containing this compound and a pharmaceutically acceptable carrier. wherein R is a hydrogen atom or P(?O)(OH)2, X is an oxygen atom or a sulfur atom, Y is CH2CH2 or CH?CH, R1 is cyano or alkyl having a carbon number of 1 to 4 and substituted by a halogen atom(s), R2 is alkyl having a carbon number of 1 to 4 and optionally substituted by a hydroxyl group(s) or a halogen atom(s), R3 and R4 may be the same or different and each is a hydrogen atom or alkyl having a carbon number of 1 to 4, and n is 5-8.
    Type: Application
    Filed: June 17, 2014
    Publication date: October 2, 2014
    Inventors: Masatoshi KIUCHI, Kaoru MARUKAWA, Nobutaka KOBAYASHI
  • Patent number: 8809304
    Abstract: A novel amine compound represented by the following formula (I), which is superior in immunosuppressive action, rejection suppressive action and the like, and shows reduced side effects such as bradycardia and the like, or a pharmaceutically acceptable acid addition salt thereof, or hydrates thereof, or solvate, as well as a pharmaceutical composition containing this compound and a pharmaceutically acceptable carrier. wherein R is a hydrogen atom or P(?O)(OH)2, X is an oxygen atom or a sulfur atom, Y is CH2CH2 or CH?CH, R1 is cyano or alkyl having a carbon number of 1 to 4 and substituted by a halogen atom(s), R2 is alkyl having a carbon number of 1 to 4 and optionally substituted by a hydroxyl group(s) or a halogen atom(s), R3 and R4 may be the same or different and each is a hydrogen atom or alkyl having a carbon number of 1 to 4, and n is 5-8.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: August 19, 2014
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masatoshi Kiuchi, Kaoru Marukawa, Nobutaka Kobayashi, Kunio Sugahara
  • 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
  • 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
  • Publication number: 20090137530
    Abstract: A novel amine compound represented by the following formula (I), which is superior in immunosuppressive action, rejection suppressive action and the like, and shows reduced side effects such as bradycardia and the like, or a pharmaceutically acceptable acid addition salt thereof, or hydrates thereof, or solvate, as well as a pharmaceutical composition containing this compound and a pharmaceutically acceptable carrier. wherein R is a hydrogen atom or P(?O)(OH)2, X is an oxygen atom or a sulfur atom, Y is CH2CH2 or CH?CH, R1 is cyano or alkyl having a carbon number of 1 to 4 and substituted by a halogen atom(s), R2 is alkyl having a carbon number of 1 to 4 and optionally substituted by a hydroxyl group(s) or a halogen atom(s), R3 and R4 may be the same or different and each is a hydrogen atom or alkyl having a carbon number of 1 to 4, and n is 5-8.
    Type: Application
    Filed: December 15, 2006
    Publication date: May 28, 2009
    Applicant: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masatoshi Kiuchi, Kaoru Marukawa, Nobutaka Kobayashi, Kunio Sugahara
  • Publication number: 20090082311
    Abstract: The present invention provides a novel compound having few side effects such as bradycardia and the like and having superior peripheral blood lymphocyte-decreasing effect.
    Type: Application
    Filed: April 27, 2007
    Publication date: March 26, 2009
    Applicant: Mitsubishi Tanabe Pharma Corporation
    Inventors: Masatoshi Kiuchi, Mitsuharu Nakamura, Maiko Hamada, Kunio Sugahara
  • Patent number: 7115635
    Abstract: The object of the present invention is to provide a compound having a treatment effect based on a chemokine inhibitory activity, which is satisfactory as a pharmaceutical product for oral administration. The present inventors have found that the following benzylpiperidine derivative (the formula (1)) has a chemokine inhibitory activity. Further intensive studies have resulted in successful enhancement of the chemokine inhibitory activity and stability in blood of the present compound, as well as the completion of the present invention. wherein each symbol is as defined in the specification.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: October 3, 2006
    Assignee: Mitsubishi Pharma Corporation
    Inventors: Masatoshi Kiuchi, Takanobu Kuroita, Hideo Tomozane, Shuuzou Takeda, Yoshihito Tanaka, Hidemitsu Higashi, Shigeki Kuwahara
  • Publication number: 20040158071
    Abstract: The object of the present invention is to provide a compound having a treatment effect based on a chemokine inhibitory activity, which is satisfactory as a pharmaceutical product for oral administration.
    Type: Application
    Filed: December 15, 2003
    Publication date: August 12, 2004
    Inventors: Masatoshi Kiuchi, Takanobu Kurota, Hideo Tomozane, Shuuzou Takeda, Yoshihito Tanaka, Hidemitsu Higashi, Shigeki Kuwahara
  • Patent number: 6372800
    Abstract: A benzene compound of the formula wherein each symbol is as defined in the specification; an optically active isomer or salt thereof, a medicinal composition containing the same, and an immunosuppressant containing the same as the active ingredient.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: April 16, 2002
    Assignee: Mitsubishi Pharma Corporation
    Inventors: Tetsuro Fujita, Kunitomo Adachi, Toshiyuki Kohara, Masatoshi Kiuchi, Kenji Chiba, Koji Teshima, Tadashi Mishina
  • Patent number: 6288061
    Abstract: The present invention relates to the imidazole derivative of the following formula (I) wherein R1 is hydrogen, optionally substituted alkyl and the like, R2 is hydrogen, optionally substituted alkyl and the like, R3is optionally substituted heteroaryl, R4 is optionally substituted cycloalkyl, optionally substituted phenyl and the like, provided that when R1 is hydrogen, and R2 and R4 are the same or different and each is phenyl or phenyl substituted by halogen atom, lower alkyl or lower alkoxy, R3 is benzothiazolyl or thiazolyl substituted by phenyl, the imidazole derivative of the following formula (XII) wherein R6 is optionally substituted phenyl or optionally substituted heteroaryl and R7 is substituted phenyl, and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: September 11, 2001
    Assignee: Welfide Corporation
    Inventors: Hiroyuki Sueoka, Jouji Yasuoka, Akira Nishiyama, Masatoshi Kiuchi, Katsuya Yamamoto, Kunio Sugahara, Syuji Ehara, Kei Sakata
  • Patent number: 6187821
    Abstract: A benzene compound of the formula: wherein each symbol is as defined in the specification; an optically active isomer or salt thereof, a medicinal composition containing the same, and an immunosuppressant containing the same as the active ingredient.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: February 13, 2001
    Assignee: Welfide Corporation
    Inventors: Tetsuro Fujita, Kunitomo Adachi, Toshiyuki Kohara, Masatoshi Kiuchi, Kenji Chiba, Koji Teshima, Tadashi Mishina
  • Patent number: 5948820
    Abstract: A benzene compound of the formula ##STR1## wherein each symbol is as defined in the specification; an optically active isomer or salt thereof, a medicinal composition containing the same, and an immunosuppressant containing the same as the active ingredient.The compound, optically active isomer or salt has an excellent immunosuppressive effect and is useful as an inhibitor for the rejection reaction occurring in organ or bone marrow transplantation, and as a preventive or remedy for articular rheumatism, atopic eczema (dermatitis), Beh.cedilla.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: September 7, 1999
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tetsuro Fujita, Kunitomo Adachi, Toshiyuki Kohara, Masatoshi Kiuchi, Kenji Chiba, Koji Teshima, Tadashi Mishina