Patents by Inventor Yoshiaki Isshiki

Yoshiaki Isshiki 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: 11964950
    Abstract: The present disclosure provides, for example, a compound represented by the general formula below or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable solvate of the compound or salt: wherein X1, X2, X3 and X4 are each independently —CR2? or N?, R2 is, for example, a halogen atom, R1 is, for example, —S(?O)2—NH—R8, R8 is, for example, a C1-6 alkyl group, R3 is, for example, a hydrogen atom, R5 is, for example, a halogen atom, R6 is, for example, a hydrogen atom, and R4 is, for example, a cyclopropyl group. The compounds, salts or solvates provided by the present disclosure exhibit high RAF/MEK complex-stabilizing activity and can be used for the treatment or prevention of cell proliferative disorders, particularly cancers.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: April 23, 2024
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Fumio Watanabe, Masaki Tomizawa, Kihito Hada, Kazuo Hattori, Kenichi Kawasaki, Ikumi Hyodo, Toshihiro Aoki
  • Publication number: 20230002333
    Abstract: The present disclosure provides, for example, a compound represented by general formula (6) below or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable solvate of the compound or salt: wherein X1, X2, X3 and X4 are each independently —CR2? or —N?, R2 is, for example, a halogen atom, R1 is, for example, —S(?O)2—NH—R8, R8 is, for example, a C1-6 alkyl group, R3 is, for example, a hydrogen atom, R5 is, for example, a halogen atom, R6 is, for example, a hydrogen atom, and R4 is, for example, a cyclopropyl group. The compounds, salts or solvates provided by the present disclosure exhibit high RAF/MEK complex-stabilizing activity and can be used for the treatment or prevention of cell proliferative disorders, particularly cancers.
    Type: Application
    Filed: July 20, 2022
    Publication date: January 5, 2023
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Fumio Watanabe, Masaki Tomizawa, Kihito Hada, Kazuo Hattori, Kenichi Kawasaki, Ikumi Hyodo, Toshihiro Aoki
  • Patent number: 9487517
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 8, 2016
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Publication number: 20160016956
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: September 17, 2015
    Publication date: January 21, 2016
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu NISHIMURA, Yoshiaki ISSHIKI, Naoki OKAMOTO, Yoshiyuki FURUTA, Akemi MIZUTANI, Masateru OHTA, Wayne Wen LAI, Tomoya KOTAKE
  • Patent number: 9169254
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: October 27, 2015
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Patent number: 8575391
    Abstract: An objective of the present invention is to provide compounds that exhibit strong MEK-inhibiting activity and are stable in vivo and soluble in water, which can be used as preventive or therapeutic agents for proliferative diseases. The compounds of the present invention and pharmaceutically acceptable salts thereof are represented by the following formula (1): [where R1, R2, R3, R4, and X are the same as defined in the present patent application].
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: November 5, 2013
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Eisaku Mizuguchi, Hitoshi Iikura, Yasuaki Matsubara, Shinji Tsujii, Nobuo Shimma, Masanori Miwa, Satoshi Aida, Masami Kohchi, Takeshi Murata, Kosuke Aso
  • Publication number: 20120270838
    Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 25, 2012
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
  • Patent number: 8193351
    Abstract: Compounds represented by formula (1) shown below, pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising such compounds are provided.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: June 5, 2012
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Takuo Tsukuda, Ken-Ichi Kawasaki, Susumu Komiyama, Yoshiaki Isshiki, Yasuhiko Shiratori, Kiyoshi Hasegawa, Takaaki Fukami, Takaaki Miura, Naomi Ono, Toshikazu Yamazaki, Young-Jun Na, Dong-Oh Yoon, Sung-Jin Kim
  • Patent number: 8084645
    Abstract: A compound of the present invention, or a pharmaceutically acceptable salt thereof is indicated by formula (1) below: wherein, R1, R2, R3, R4, R5, R6, Q, R8, and R9 have the same meanings as R1, R2, R3, R4, R5, R6, Q, R8, and R9 in the specification.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: December 27, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Kazuo Hattori, Nobuo Shimma, Masanori Miwa, Naohito Inagaki, Hitoshi Iikura, Yasuaki Matsubara
  • Patent number: 8022247
    Abstract: The invention provides a process for production of 2,3,4-trifluoro-5-(iodo or bromo)benzoic acid, the process comprising a halogenation step in which direct iodination or bromination of 2,3,4-trifluorobenzoic acid is performed with an iodinating agent or brominating agent in a reaction solvent in the presence of an oxidizing agent. According to the invention, there is provided a process for convenient production of 2,3,4-trifluoro-5-(iodo or bromo)benzoic acid in high yield and high purity in a highly regioselective manner.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: September 20, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hiroshi Koyano, Hitoshi Iikura, Yoshiaki Isshiki, Yasunori Kohchi
  • Publication number: 20100197676
    Abstract: An objective of the present invention is to provide compounds that exhibit strong MEK-inhibiting activity and are stable in vivo and soluble in water, which can be used as preventive or therapeutic agents for proliferative diseases. The compounds of the present invention and pharmaceutically acceptable salts thereof are represented by the following formula (1): [where R1, R2, R3, R4, and X are the same as defined in the present patent application].
    Type: Application
    Filed: April 1, 2010
    Publication date: August 5, 2010
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Eisaku Mizuguchi, Hitoshi Iikura, Yasuaki Matsubara, Shinji Tsujii, Nobuo Shimma, Masanori Miwa, Satoshi Aida, Masami Kohchi, Takeshi Murata, Kosuke Aso
  • Patent number: 7745663
    Abstract: An objective of the present invention is to provide compounds that exhibit strong MEK-inhibiting activity and are stable in vivo and soluble in water, which can be used as preventive or therapeutic agents for proliferative diseases. The compounds of the present invention and pharmaceutically acceptable salts thereof are represented by the following formula (1): [where R1, R2, R3, R4, and X are the same as defined in the present patent application].
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: June 29, 2010
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Eisaku Mizuguchi, Hitoshi Iikura, Yasuaki Matsubara, Shinji Tsujii, Nobuo Shimma, Masanori Miwa, Satoshi Aida, Masami Kohchi, Takeshi Murata, Kosuke Aso
  • Publication number: 20090247524
    Abstract: Compounds represented by formula (1) shown below, pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising such compounds are provided.
    Type: Application
    Filed: May 25, 2007
    Publication date: October 1, 2009
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Takuo Tsukuda, Ken-ichi Kawasaki, Susumu Komiyama, Yoshiaki Isshiki, Yasuhiko Shiratori, Kiyoshi Hasegawa, Takaaki Fukami, Takaaki Miura, Naomi Ono, Toshikazu Yamazaki, Young-Jun Na, Dong-Oh Yoon, Sung-Jin Kim
  • Publication number: 20090233915
    Abstract: An objective of the present invention is to provide compounds that exhibit strong MEK-inhibiting activity and are stable in vivo and soluble in water, which can be used as preventive or therapeutic agents for proliferative diseases. The compounds of the present invention and pharmaceutically acceptable salts thereof are represented by the following formula (1): [where R1, R2, R3, R4, and X are the same as defined in the present patent application].
    Type: Application
    Filed: July 26, 2005
    Publication date: September 17, 2009
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Eisaku Mizuguchi, Hitoshi Iikura, Yasuaki Matsubara, Shinji Tsujii, Nobuo Shimma, Masanori Miwa, Satoshi Aida, Masami Kohchi, Takeshi Murata, Kosuke Aso
  • Publication number: 20090209785
    Abstract: The invention provides a process for production of 2,3,4-trifluoro-5-(iodo or bromo)benzoic acid, the process comprising a halogenation step in which direct iodination or bromination of 2,3,4-trifluorobenzoic acid is performed with an iodinating agent or brominating agent in a reaction solvent in the presence of an oxidizing agent. According to the invention, there is provided a process for convenient production of 2,3,4-trifluoro-5-(iodo or bromo)benzoic acid in high yield and high purity in a highly regioselective manner.
    Type: Application
    Filed: April 6, 2006
    Publication date: August 20, 2009
    Inventors: Hiroshi Koyano, Hitoshi Iikura, Yoshiaki Isshiki, Yasunori Kohchi
  • Publication number: 20070105859
    Abstract: A compound of the present invention, or a pharmaceutically acceptable salt thereof is indicated by formula (1) below: wherein, R1, R2, R3, R4, R5, R6, Q, R8, and R9 have the same meanings as R1, R2, R3, R4, R5, R6, Q, R8, and R9 in the specification.
    Type: Application
    Filed: September 16, 2004
    Publication date: May 10, 2007
    Inventors: Yoshiaki Isshiki, Yasunori Kohchi, Kazuo Hattori, Nobuo Shimma, Masanori Miwa, Naohito Inagaki, Hitoshi IIkura, Yasuaki Matsubara
  • Patent number: 6300353
    Abstract: Azole derivatives of the formula I wherein R14, R15 are each independently hydrogen or fluorine, T is a group of the formula: wherein R9 is pyrrolidinyl or a group A—NH—B—, A is hydrogen or straight-chain or branched C1-C5 alkyl; B is straight-chain or branched C1-C4 alkylene, —CH2—CONH—CH2 or —CH2CH2CH2—CH(NH2); and X− is a pharmaceutically acceptable anion; and pharmaceutically acceptable salts of said compounds, and hydrates and solvates of the compounds of formula I and the salts thereof can be used in the production of medicaments for treating fungal infections and mycoses.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: October 9, 2001
    Assignee: Basilea Pharmaceutica AG, a Swiss Company
    Inventors: Tadakatsu Hayase, Shigeyasu Ichihara, Yoshiaki Isshiki, Pingli Liu, Jun Ohwada, Toshiya Sakai, Nobuo Shimma, Masao Tsukazaki, Isao Umeda, Toshikazu Yamazaki