Patents by Inventor Shuji Shirotori

Shuji Shirotori 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: 8841327
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability. According to the present invention, there is disclosed a compound represented by the following formula (I), or a salt thereof: wherein R1, R2, X, Y, ring A, Z, R3 and R4 are as defined in the specification.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 23, 2014
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Patent number: 8377938
    Abstract: The invention provides acid addition salts of the compounds represented by formula (1) or (2), or crystals thereof, and processes for preparing the same. The salts or crystals have HGFR inhibitory activity and excellent physical properties (solubility, safety, etc.) and are therefore useful as anti-tumor agents, angiogenesis inhibitors and inhibitors for metastasis for a various types of tumor.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: February 19, 2013
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Tomohiro Matsushima, Shuji Shirotori, Keiko Takahashi, Atsushi Kamada, Kazunori Wakasugi, Takahisa Sakaguchi
  • Patent number: 8288538
    Abstract: A compound represented by the following formula, or a salt thereof or a hydrate of the foregoing, has excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity, and cancer metastasis inhibitory activity. R1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents —CH?, nitrogen or the like.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: October 16, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Tomohiro Matsushima, Keiko Takahashi, Setsuo Funasaka, Hiroshi Obaishi, Shuji Shirotori
  • Patent number: 8273885
    Abstract: Provided is a fluoroboron compound which is highly safe and stable and is capable of forming a cyclic ether-fused ring by the intramolecular alkoxymethylation reaction, or a salt thereof. The compound can be synthesized by the intramolecular alkoxymethylation reaction of a fluoroboron compound represented by the formula (I) or a salt thereof in the presence of a metal catalyst. (wherein the moiety represented by the formula represents an aromatic ring; L represents a substituent such as a halogen atom; R represents a substituted or unsubstituted alkylene group having 1 or 2 carbon atoms; and M represents an alkali metal cation or the like, with the proviso that L and —R—OCH2BF3M are respectively located on contiguous carbon atoms on the aromatic ring, or in the case of a fused aromatic ring, on two carbon atoms adjacent to one carbon at the fused position).
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: September 25, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Norio Murai, Shuji Shirotori, Satoshi Nagao, Yuzo Watanabe
  • Publication number: 20120232049
    Abstract: A pyridine or pyrimidine derivative represented by the formula (I) has an excellent HGFR inhibitory activity and exhibits strong cell proliferation inhibitory effect and anti-tumor effect against cancer cell lines with amplified HGFR gene. wherein R1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents —CH?, nitrogen.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 13, 2012
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Hiroshi Obaishi, Takayuki Nakagawa, Tomohiro Matsushima, Setsuo Funasaka, Shuji Shirotori, Keiko Takahashi
  • Patent number: 8183264
    Abstract: The present invention provides an antifungal agent that has excellent antifungal action, and is also excellent in terms of its properties, safety, and metabolic stability.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: May 22, 2012
    Assignee: Eisai R&D Managment Co., Ltd.
    Inventors: Masayuki Matsukura, Satoshi Inoue, Keigo Tanaka, Norio Murai, Shuji Shirotori
  • Patent number: 8158657
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: April 17, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Patent number: 8153662
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: April 10, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Publication number: 20120029023
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability. According to the present invention, there is disclosed a compound represented by the following formula (I), or a salt thereof: wherein R1, R2, X, Y, ring A, Z, R3 and R4 are as defined in the specification.
    Type: Application
    Filed: September 23, 2011
    Publication date: February 2, 2012
    Inventors: Keigo TANAKA, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Patent number: 7855290
    Abstract: A compound represented by the following formula, a salt thereof or a hydrate of the foregoing has an excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity and cancer metastasis inhibitory activity. [R1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents —CH?, nitrogen or the like.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: December 21, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Tomohiro Matsushima, Keiko Takahashi, Setsuo Funasaka, Shuji Shirotori
  • Patent number: 7790885
    Abstract: A process for preparing a compound represented by the formula (I): comprising reacting a compound represented by the formula (II) or salt thereof: with a compound represented by the formula (III): in the presence of a condensation reagent, wherein R1 represents 1) optionally substituted azetidin-1-yl, 2) optionally substituted pyrrolidin-1-yl, 3) optionally substituted piperidin-1-yl, etc.; R2, R3, R4 and R5 may be the same or different and each represents hydrogen or fluorine; and R6 represents hydrogen or fluorine.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: September 7, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Mitsuo Nagai, Tomohiro Matsushima, Atsushi Kamada, Kazunori Wakasugi, Shuji Shirotori, Shinya Abe, Kazumasa Nara, Takahisa Sakaguchi
  • Publication number: 20100168173
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability.
    Type: Application
    Filed: February 12, 2010
    Publication date: July 1, 2010
    Inventors: Keigo Tanaka, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Publication number: 20100160379
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability.
    Type: Application
    Filed: February 12, 2010
    Publication date: June 24, 2010
    Inventors: Keigo TANAKA, Satoshi Inoue, Norio Murai, Masayuki Matsukua, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Publication number: 20100099718
    Abstract: The present invention provides an antifungal agent that has excellent antifungal action, and is also excellent in terms of its properties, safety, and metabolic stability.
    Type: Application
    Filed: September 20, 2007
    Publication date: April 22, 2010
    Inventors: Masayuki Matsukura, Satoshi Inoue, Keigo Tanaka, Norio Murai, Shuji Shirotori
  • Patent number: 7696347
    Abstract: The present invention provides compounds which are useful as safe substitutes for the organotin reagent used in coupling reaction for the oxymethylation of aromatic rings, such as alkoxymethylation or hydroxymethylation, with a palladium catalyst and which can dispense with chromatographic purification with silica gel in the production and are suitable for mass production; and compounds applicable even to the oxymethylation of aromatic ring substrates which do not permit coupling reaction by conventional technique or have low reactivity.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: April 13, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Satoshi Inoue, Daisuke Ito, Norio Murai, Yosuke Kaburagi, Shuji Shirotori, Shuichi Suzuki, Yoshiaki Ohashi
  • Patent number: 7691882
    Abstract: An object of the present invention is to provide an antifungal agent which has excellent antifungal effects and is superior in terms of its physical properties, safety and metabolic stability.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: April 6, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Keigo Tanaka, Satoshi Inoue, Norio Murai, Masayuki Matsukura, Kazutaka Nakamoto, Shuji Shirotori, Shinya Abe
  • Publication number: 20100075944
    Abstract: A compound represented by the following formula, or a salt thereof or a hydrate of the foregoing, has excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity, and cancer metastasis inhibitory activity. R1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents —CH?, nitrogen or the like.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 25, 2010
    Inventors: Tomohiro MATSUSHIMA, Keiko Takahashi, Setsuo Funasaka, Hiroshi Obaishi, Shuji Shirotori
  • Publication number: 20100056788
    Abstract: Provided is a fluoroboron compound which is highly safe and stable and is capable of forming a cyclic ether-fused ring by the intramolecular alkoxymethylation reaction, or a salt thereof. The compound can be synthesized by the intramolecular alkoxymethylation reaction of a fluoroboron compound represented by the formula (I) or a salt thereof in the presence of a metal catalyst. (wherein the moiety represented by the formula represents an aromatic ring; L represents a substituent such as a halogen atom; R represents a substituted or unsubstituted alkylene group having 1 or 2 carbon atoms; and M represents an alkali metal cation or the like, with the proviso that L and —R—OCH2BF3M are respectively located on contiguous carbon atoms on the aromatic ring, or in the case of a fused aromatic ring, on two carbon atoms adjacent to one carbon at the fused position).
    Type: Application
    Filed: September 11, 2007
    Publication date: March 4, 2010
    Inventors: Keigo Tanaka, Norio Murai, Shuji Shirotori, Satoshi Nagao, Yuzu Watanabe
  • Publication number: 20080318924
    Abstract: The invention provides acid addition salts of the compounds represented by formula (1) or (2), or crystals thereof, and processes for preparing the same. The salts or crystals have HGFR inhibitory activity and excellent physical properties (solubility, safety, etc.) and are therefore useful as anti-tumor agents, angiogenesis inhibitors and inhibitors for metastasis for a various types of tumor.
    Type: Application
    Filed: February 14, 2008
    Publication date: December 25, 2008
    Applicant: Eisai R&D Management Co., Ltd
    Inventors: Tomohiro MATSUSHIMA, Shuji Shirotori, Keiko Takahashi, Atsushi Kamada, Kazunori Wakasugi, Takahisa Sakaguchi
  • Publication number: 20080319188
    Abstract: A compound represented by the following formula, a salt thereof or a hydrate of the foregoing has an excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity and cancer metastasis inhibitory activity. [R1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents —CH?, nitrogen or the like.
    Type: Application
    Filed: August 23, 2006
    Publication date: December 25, 2008
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Tomohiro Matsushima, Keiko Takahashi, Setsuo Funasaka, Hiroshi Obaishi, Shuji Shirotori