Patents by Inventor Hisaaki Chaki

Hisaaki Chaki 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: 7772285
    Abstract: A benzophenone derivative represented by the following formula: wherein R1 represents, for example, an optionally substituted heterocyclic group, or a substituted phenyl group; Z represents, for example, an alkylene group; R2 represents, for example, a carboxyl group optionally protected with alkyl; R3 represents, for example, an optionally protected hydroxyl group; R4 represents, for example, an optionally substituted cycloalkyloxy group; and R5 represents, for example, a hydrogen atom, or a salt thereof has anti-arthritic activity, inhibits bone destruction caused by arthritis, and provides high safety and excellent pharmacokinetics and thus is useful as therapeutic agent for arthritis. These compounds have inhibitory effect on AP-1 activity and are useful as preventive or therapeutic agent for diseases in which excessive expression of AP-1 is involved.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: August 10, 2010
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hisaaki Chaki, Hironori Kotsubo, Tadashi Tanaka, Yukihiko Aikawa, Shuichi Hirono, Shunichi Shiozawa
  • Publication number: 20090118169
    Abstract: A compound comprising the atom corresponding to N3 and the two or more atoms selected from N1, N2, N4 and N5, said atoms constitute the pharmacophore represented by the following formula: wherein N1 represents an atom to which a donative hydrogen atom in a hydrogen-bond donating group is bonded or a hydrogen-bond accepting atom in a hydrogen-bond accepting group; N3 represents a hydrogen-bond accepting atom in a hydrogen-bond accepting group; and N2, N4 and N5 independently represents an arbitrary carbon atom constituting a hydrophobic group and defined by the interatomic distances between N1, N2, N3, N4 and N5; and, in the optimized three-dimensional structure thereof, the distances between the atom corresponding to N3 and the two or more atoms selected from N1, N2, N4 and N5, in the optimized steric structure thereof, are the interatomic distances in a pharmacophore; or a salt thereof; inhibits the activity of transcription factor AP-1 and is useful as an agent for preventing and treating the diseases i
    Type: Application
    Filed: November 16, 2007
    Publication date: May 7, 2009
    Applicant: TOYAMA CHEMICAL CO., LTD.
    Inventors: Hisaaki Chaki, Tadakazu Takakura, Keiichi Tsuchida, Hironori Kotsubo, Yukihiko Aikawa, Shuichi Hirono, Shunichi Shiozawa
  • Patent number: 7314888
    Abstract: A compound or a salt thereof having the atom corresponding to N3 and the two or more atoms selected from N1, N2, N4 and N5, said atoms constitute the pharmacophore represented by the following formula: and inhibits the activity of transcription factor AP-1 and is useful as an agent for preventing and treating the diseases into which over expression of AP-1 participates and as an AP-1 inhibitor.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: January 1, 2008
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hisaaki Chaki, Tadakazu Takakura, Keiichi Tsuchida, Hironori Kotsubo, Yukihiko Aikawa, Shuichi Hirono, Shunichi Shiozawa
  • Publication number: 20050113400
    Abstract: A benzophenone derivative represented by the following formula: wherein R1 represents, for example, an optionally substituted heterocyclic group, or a substituted phenyl group; Z represents, for example, an alkylene group; R2 represents, for example, a carboxyl group optionally protected with alkyl; R3 represents, for example, an optionally protected hydroxyl group; R4 represents, for example, an optionally substituted cycloalkyloxy group; and R5 represents, for example, a hydrogen atom, or a salt thereof has anti-arthritic activity, inhibits bone destruction caused by arthritis, and provides high safety and excellent pharmacokinetics and thus is useful as therapeutic agent for arthritis. These compounds have inhibitory effect on AP-1 activity and are useful as preventive or therapeutic agent for diseases in which excessive expression of AP-1 is involved.
    Type: Application
    Filed: November 13, 2002
    Publication date: May 26, 2005
    Inventors: Hisaaki Chaki, Hironori Kotsubo, Tadashi Tanaka, Yukihiko Aikawa, Shuichi Hirono, Shunichi Shiozawa
  • Patent number: 6384065
    Abstract: The spiro compounds of the present invention represented by the general formula: wherein A, R2, R3, R4, R5, R6 and n are as defined in the specification, exhibit an AP-1 activity inhibitory action and, based on the AP-1 inhibitory action, suppresses the expression of a wide variety of genes and are useful as an agent for treating and preventing autoimmune diseases with lessoned side reactions.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: May 7, 2002
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hisaaki Chaki, Yukihiko Aikawa, Mikako Miyajima, Morihiro Nishio, Hiroshi Kuroda, Keiichi Tanaka, Shuichi Hirono, Shunichi Shiozawa
  • Patent number: 5872117
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function-improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: February 16, 1999
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita
  • Patent number: 5719150
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function-improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: February 17, 1998
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita
  • Patent number: 5658904
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function-improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 19, 1997
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita
  • Patent number: 5612381
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function-improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 18, 1997
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita
  • Patent number: 5472984
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function-improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: December 5, 1995
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita
  • Patent number: 5380878
    Abstract: This invention relates to a process for producing a compound represented by formula (6a) or (6b): ##STR1## wherein R.sup.2 represents a hydrogen atom or a hydroxyl-protecting group and R.sup.4 and R.sup.5, which may be the same or different, represents lower alkyl groups, using a compound represented by formula (2a) or (2b) obtained by preferential crystallization: ##STR2## and also to a compound represented by the following formula (7) which is an intermediate useful for producing the compound of formula (6a) or (6b): ##STR3## wherein R.sup.1 represents a group represented by formula (8): ##STR4## wherein R.sup.2 and R.sup.3 is as defined above and R.sup.3 represents a hydrogen atom, a group or a carboxyl protecting group represented by formula (9): ##STR5## or a group represented by formula (10): ##STR6## wherein R.sup.2 is as defined above.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: January 10, 1995
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Joji Nakano, Nobuhisa Taya, Hisaaki Chaki, Tetsuo Yamafuji, Kaishu Momonoi
  • Patent number: 5280032
    Abstract: This invention relates to a 1,2-ethanediol derivative and a salt thereof, a process for producing the same, and a cerebral function improving agent comprising the same. The cerebral function-improving agent of this invention is useful for treating cerebrovascular dementia, senile dementia, Alzheimer's dementia, sequelae of ischemic encephalopathy and cerebral apoplexy.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: January 18, 1994
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Satoshi Ono, Tetsuo Yamafuji, Hisaaki Chaki, Mutsuko Maekawa, Yozo Todo, Hirokazu Narita