Patents by Inventor Masatoshi Chihiro

Masatoshi Chihiro 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: 8450352
    Abstract: Thiazole compounds for inhibiting the activity of phosphodiesterase 4, the production of tumor necrosis factor alpha, and the production of interleukin 4. The compounds of the invention are represented by general formula (1): wherein A is any one of the following groups (i)-(iii): (i) —CH(OH)—B— wherein B is a C1-6 alkylene group; (ii) —COCH(COOR3)-Bb- wherein R3 is a C1-6 alkyl group and Bb is a C1-6 alkylene group; and (iii) -Bc- wherein Bc is a C2-6 alkylene group, and include optical isomers and salts of the compounds.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: May 28, 2013
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Isao Takemura, Kenji Watanabe, Kunio Oshima, Nobuaki Ito, Junpei Haruta, Hidetaka Hiyama, Masatoshi Chihiro, Hideki Kawasome, Yoko Sakamoto, Hironobu Ishiyama, Takumi Sumida, Kazuhiko Fujita, Hideki Kitagaki
  • Patent number: 8354439
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: [wherein R1 is a phenyl group which may have a lower alkoxy group(s) as a substituent(s) on the phenyl ring, and R2 is a group represented by the following general formula: (wherein R3's, which may be the same or different, are each a carboxyl group, a lower alkoxy group or the like) or the like] and salts thereof.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 15, 2013
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Takayuki Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Kurimura, Fujio Tabusa
  • Publication number: 20100094002
    Abstract: Thiazole compounds for inhibiting the activity of phosphodiesterase 4, the production of tumor necrosis factor alpha, and the production of interleukin 4. The compounds of the invention are represented by general formula (1): wherein A is any one of the following groups (i)-(iii): (i) —CH(OH)-B- wherein B is a C1-6 alkylene group; (ii) —COCH(COOR3)-Bb- wherein R3 is a C1-6 alkyl group and Bb is a C1-6 alkylene group; and (iii) -Bc- wherein Bc is a C2-6 alkylene group, and include optical isomers and salts of the compounds.
    Type: Application
    Filed: December 15, 2009
    Publication date: April 15, 2010
    Inventors: Isao Takemura, Kenji Watanabe, Kunio Oshima, Nobuaki Ito, Junpei Haruta, Hidetaka Hiyama, Masatoshi Chihiro, Hideki Kawasome, Yoko Sakamoto, Hironobu Ishiyama, Takumi Sumida, Kazuhiko Fujita, Hideki Kitagaki
  • Patent number: 7655680
    Abstract: Thiazole compounds for inhibiting the activity of phosphodiesterase 4, the production of tumor necrosis factor alpha, and the production of interleukin 4. The compounds of the invention are represented by general formula (1): wherein A is any one of the following groups (i) and (ii): (i) —CO—B— wherein B is a C1-6 alkylene group and (ii) —CO—Ba— wherein Ba is a C2-6 alkenylene group, and include optical isomers and salts of the compounds.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: February 2, 2010
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Isao Takemura, Kenji Watanabe, Kunio Oshima, Nobuaki Ito, Junpei Haruta, Hidetaka Hiyama, Masatoshi Chihiro, Hideki Kawasome, Yoko Sakamoto, Hironobu Ishiyama, Takumi Sumida, Kazuhiko Fujita, Hideki Kitagaki
  • Publication number: 20080039511
    Abstract: An object of the present invention is to provide a novel thiazole compound with specific inhibitory activity against phosphodiesterase 4.
    Type: Application
    Filed: May 16, 2005
    Publication date: February 14, 2008
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Isao Takemura, Kenji Watanabe, Kunio Oshima, Nobuaki Ito, Junpei Haruta, Hidetaka Hiyama, Masatoshi Chihiro, Hideki Kawasome, Yoko Sakamoto, Hironobu Ishiyama, Takumi Sumida, Kazuhiko Fujita, Hideki Kitagaki
  • Publication number: 20070238758
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: [wherein R1 is a phenyl group which may have a lower alkoxy group(s) as a substituent(s) on the phenyl ring, and R2 is a group represented by the following general formula: (wherein R3's, which may be the same or different, are each a carboxyl group, a lower alkoxy group or the like) or the like] and salts thereof.
    Type: Application
    Filed: May 16, 2007
    Publication date: October 11, 2007
    Inventors: Masatoshi Chihiro, Takayuki Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Kurimura, Fujio Tabusa
  • Publication number: 20070105911
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: (wherein R1 is a phenyl group which may have a lower alkoxy group(s) as a substituent(s) on the phenyl ring, and R2 is a group represented by the following general formula: (wherein R3's, which may be the same or different, are each a carboxyl group, a lower alkoxy group or the like) or the like] and salts thereof.
    Type: Application
    Filed: December 12, 2006
    Publication date: May 10, 2007
    Inventors: Masatoshi Chihiro, Takayuki Matsuzani, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Jurimura, Fujio Tabusa
  • Publication number: 20060167062
    Abstract: The object of this invention is to provide an enema preparation effective in treating inflammatory bowel diseases. The enema preparation of this invention includes at least one selected from the group consisting of thiazole compounds having the following general formula and the salts thereof: wherein R1 represents a phenyl group which may have 1 to 3 lower alkoxy groups as substituents on the phenyl ring and R2 a pyridyl group which may have 1 to 3 carboxyl groups as substituents on the pyridine ring.
    Type: Application
    Filed: July 16, 2004
    Publication date: July 27, 2006
    Inventors: Takashi Maeda, Hisashi Nagamoto, Masatoshi Chihiro
  • Publication number: 20040014792
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: 1
    Type: Application
    Filed: April 29, 2003
    Publication date: January 22, 2004
    Applicant: Otsuka Pharmaceutical Co. Ltd.
    Inventors: Masatoshi Chihiro, TakayukI Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Fujio Tabusa
  • Patent number: 6583163
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: [wherein R1 is a phenyl group which may have a lower alkoxy group(s) as a substituent(s) on the phenyl ring, and R2 is a group represented by the following general formula: (wherein R3's, which may be the same or different, are each a carboxyl group, a lower alkoxy group or the like) or the like] and salts thereof.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: June 24, 2003
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Takayuki Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Kurimura, Fujio Tabusa
  • Publication number: 20020013469
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: 1
    Type: Application
    Filed: June 25, 2001
    Publication date: January 31, 2002
    Applicant: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Takayuki Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Kurimura, Fujio Tabusa
  • Patent number: 6291487
    Abstract: The present invention provides an agent for inhibiting cytokine production or cell adhesion, comprising at least one compound selected from the group consisting of thiazole derivatives represented by the following general formula: [wherein R1 is a phenyl group which may have a lower alkoxy group(s) as a substituent(s) on the phenyl ring, and R2 is a group represented by the following general formula: [wherein R3's, which may be the same or different, are each a carboxyl group, a lower alkoxy group or the like) or the like] and salts thereof.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: September 18, 2001
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Takayuki Matsuzaki, Hisashi Nagamoto, Goro Miyakoda, Shinobu Sueyoshi, Toyoki Mori, Kazuyoshi Kitano, Isao Takemura, Hiroshi Yamashita, Muneaki Kurimura, Fujio Tabusa
  • Patent number: 6080764
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## [wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: June 27, 2000
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5677319
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## ?wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom! or a salt thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 14, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5643932
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## [wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: July 1, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5639770
    Abstract: A thiazole derivative of the general formula: ##STR1## The thiazole derivatives have an excellent inhibitory activity for superoxide radical.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: June 17, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 4963566
    Abstract: A hydroquinoline compound of the formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, A, l, m and n are as defined or its pharmaceutically acceptable salt, composition containing the compound and processes for preparing same are disclosed. The compound is useful as an antiulcer agent.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: October 16, 1990
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Masatoshi Chihiro
  • Patent number: 4880815
    Abstract: Novel tetrahydroquinoline derivatives and salts thereof and novel imidazopyridine derivatives and salts thereof, both having excellent anti-peptic ulcer activities, and are useful as treating agents for peptic ulcers such as gastric ulcer, duodenum ulcer and the like.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: November 14, 1989
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Masatoshi Chihiro, Kazuyuki Nakagawa
  • Patent number: 4738970
    Abstract: Novel tetrahydroquinoline derivatives and salts thereof and novel imidazopyridine derivatives and salts thereof, both having excellent anti-peptic ulcer activities, and are useful as treating agents for peptic ulcers such as gastric ulcer, duodenum ulcer and the like.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: April 19, 1988
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Minoru Uchida, Seiji Morita, Masatoshi Chihiro, Kazuyuki Nakagawa
  • Patent number: RE37556
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), [wherein R1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R3 represents a group of the formula, (R4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group, m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: February 19, 2002
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi