Patents by Inventor Yukiyoshi Yamazaki

Yukiyoshi Yamazaki 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).

  • Publication number: 20070208025
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: April 30, 2007
    Publication date: September 6, 2007
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20070049595
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: November 1, 2006
    Publication date: March 1, 2007
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 7183295
    Abstract: A compound represented by the following formula (1): (wherein each of R1 and R2, which may be identical to or different from each other, represents a hydrogen atom, a methyl group, or an ethyl group; each of R3a, R3b, R4a, and R4b, which may be identical to or different from each other, represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, a C1-4 alkyl group, a trifluoromethyl group, a C1-4 alkoxy group, a C1-4 alkylcarbonyloxy group, a di-C1-4 alkylamino group, a C1-4 alkylsulfonyloxy group, a C1-4 alkylsulfonyl group, a C1-4 alkylsulfinyl group, or a C1-4 alkylthio group, or R3a and R3b, or R4a and R4b may be linked together to form an alkylenedioxy group; X represents an oxygen atom, a sulfur atom, or N—R5 (R5 represents a hydrogen atom, a C1-4 alkyl group, a C1-4 alkylsulfonyl group, or a C1-4 alkyloxycarbonyl group); Y represents an oxygen atom, S(O)l (l is a number of 0 to 2), a carbonyl group, a carbonylamino group, an aminocarbonyl group, a sulfonylamino group, or an aminosu
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: February 27, 2007
    Assignee: Kowa Co., Ltd.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hidefumi Ozawa, Ayumu Okuda, Takaaki Araki, Kazutoyo Abe, Soichi Oda
  • Patent number: 7135473
    Abstract: A cyclic diamine compound of formula (1): wherein R1 and R2 are individually a hydrogen atom or a methoxy group, provided R1 is a methoxy group when R2 is a hydrogen atom, or a hydrogen atom when R2 is a methoxy group; A is an oxygen atom, a sulfur atom, CH?CH, CH?N or NR3, in which R3 is a hydrogen atom, or a lower alkyl, hydroxy lower alkyl, lower alkoxy lower alkyl, aryl or aryl lower alkyl group; B is a nitrogen atom, CH or CR4, in which R4 is a hydrogen atom, or a lower alkyl, hydroxy lower alkyl, lower alkoxy lower alkyl, aryl or aryl lower alkyl group; m is 1 or 2; and n is a number of 1 to 5, an acid-addition salt thereof, or a hydrate thereof. The compound has inhibitory effects on cell adhesion and is useful for treatment of allergy, asthma, rheumatism, arteriosclerosis, and inflammation.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: November 14, 2006
    Assignee: Kowa Co., Ltd.
    Inventors: Tatsuhiko Kodama, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Takeshi Doi, Yoshinori Kyotani
  • Patent number: 7109226
    Abstract: A compound represented by the following formula (1): Or a salt thereof; and therapeutic durgs containing the compound. The compound selectively activates PPAR?.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: September 19, 2006
    Assignee: Kowa Co., Ltd.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hidefumi Ozawa, Ayumu Okuda, Takaaki Araki, Kazutoyo Abe, Soichi Oda
  • Patent number: 7109242
    Abstract: A compound represented by the following general formula (1), a salt thereof, or an ester thereof: wherein m represents an integer of 0 to 4, n represents an integer of 5 to 9, and R represents hydrogen atom or a protective group of hydroxyl group, which has reducing actions of blood glucose, plasma insulin, and triglyceride, and is useful for preventive and/or therapeutic treatment of diabetes, complications of diabetes, hyperlipemia and others.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: September 19, 2006
    Assignee: Kowa Company, Ltd.
    Inventors: Keisuke Inoue, Tsutomu Toma, Takahiro Kitamura, Yukiyoshi Yamazaki, Tetsuya Ishikawa
  • Publication number: 20060189667
    Abstract: A compound represented by the following formula (1): (wherein each of R1 and R2, which may be identical to or different from each other, represents a hydrogen atom, a methyl group, or an ethyl group; each of R3a, R3b, R4a, and R4b, which may be identical to or different from each other, represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, a C1-4 alkyl group, a trifluoromethyl group, a C1-4 alkoxy group, a C1-4 alkylcarbonyloxy group, a di-C1-4 alkylamino group, a C1-4 alkylsulfonyloxy group, a C1-4 alkylsulfonyl group, a C1-4 alkylsulfinyl group, or a C1-4 alkylthio group, or R3a and R3b, or R4a and R4b may be linked together to form an alkylenedioxy group; X represents an oxygen atom, a sulfur atom, or N—R5 (R5 represents a hydrogen atom, a C1-4 alkyl group, a C1-4 alkylsulfonyl group, or a C1-4 alkyloxycarbonyl group); Y represents an oxygen atom, S(O)l (l is a number of 0 to 2), a carbonyl group, a carbonylamino group, an aminocarbonyl group, a sulfonylamino group, or an aminos
    Type: Application
    Filed: April 20, 2006
    Publication date: August 24, 2006
    Applicant: KOWA CO., LTD.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hidefumi Ozawa, Ayumu Okuda, Takaaki Araki, Kazutoyo Abe, Soichi Oda
  • Publication number: 20060167058
    Abstract: The present invention provides a compound selectively activating PPAR?, which is useful as a medicament. The present invention is specifically directed to a benzoic acid derivative represented by the following general formula (1): wherein A represents an oxygen atom, a nitrogen atom, or a sulfur atom; R represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkyl-alkyl group, an aryl group, an aryl-alkyl group an aryl-oxy-alkyl group, a pyridyl-alkyl group, an alkoxycarbonyl-alkyl group, or a carboxy-alkyl group; X represents an oxygen atom, an NH group, or an S(O)n group (wherein n represents an integer of 0, 1, or 2); and m represents an integer from 2 to 8; or a salt thereof. The present invention also provides a medicament comprising the benzoic acid derivative or the salt thereof as an active ingredient.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 27, 2006
    Applicant: Kowa Co., Ltd.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hajime Yamada, Hidefumi Ozawa, Ayumu Okuda, Kazutoyo Abe
  • Publication number: 20060160804
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: March 22, 2006
    Publication date: July 20, 2006
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20050267113
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: August 15, 2005
    Publication date: December 1, 2005
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20050176764
    Abstract: Abstract The present invention is directed to a method for treating cancer, a method for inhibiting histone deacetylase, and a method for facilitating gene therapy, comprising administering an effective amount of a cyclic amine compound represented by the following formula (1):(wherein R1, R2, and R3 each independently represent a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, a halogen-substituted alkyl group, an alkoxy group, an alkylthio group, a carboxyl group, an alkoxycarbonyl group, or an alkanoyl group; W1 and W2, which are identical to or different from each other, represent N or CH; X represents O, NR4, CONR4, or NR4CO; R4 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted heteroaralkyl group; and l, m, and n each represent a number of 0 or 1), a salt thereof, or a hydrate thereof.
    Type: Application
    Filed: April 11, 2003
    Publication date: August 11, 2005
    Applicant: KOWA CO., LTD
    Inventors: Chikage Mataki, Tatsuhiko Kodama, Takeshi Doi, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Shunji Takemura, Masao Ohkuch
  • Publication number: 20050101636
    Abstract: A compound represented by the following formula (1): Or a salt thereof; and therapeutic durgs containing the compound. The compound selectively activates PPAR?.
    Type: Application
    Filed: September 3, 2004
    Publication date: May 12, 2005
    Applicant: KOWA CO., LTD.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hidefumi Ozawa, Ayumu Okuda, Takaaki Araki, Kazutoyo Abe, Soichi Oda
  • Publication number: 20050065155
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: November 12, 2004
    Publication date: March 24, 2005
    Applicant: KOWA CO., LTD.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 6867221
    Abstract: A cyclic amine compound represented by the following general formula (1): wherein, R1, R2 and R3 each independently represent a hydrogen atom or an alkoxy group; W1 and W2 each independently represent N or CH; X represents O, NR4, CONR4 or NR4CO; R4 represents a hydrogen atom, or an alkyl, aryl, heteroaryl, aralkyl, or heteroaralkyl group; and l, m and n each represents a number of 0 or 1, a salt thereof and a hydrate thereof are provided. These compounds have inhibitory effects on both cell adhesion and cell infiltration and are useful as anti-asthmatic agents, anti-allergic agents, anti-rheumatic agents, anti-arteriosclerotic agents, anti-inflammatory agents, anti-Sjogren's syndrome agents or the like.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: March 15, 2005
    Assignee: Kowa Co., Ltd.
    Inventors: Tatsuhiko Kodama, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Shunji Takemura, Takeshi Doi, Yoshinori Kyotani, Masao Ohkuchi
  • Publication number: 20050009909
    Abstract: A compound represented by the following general formula (1), a salt thereof, or an ester thereof: wherein m represents an integer of 0 to 4, n represents an integer of 5 to 9, and R represents hydrogen atom or a protective group of hydroxyl group, which has reducing actions of blood glucose, plasma insulin, and triglyceride, and is useful for preventive and/or therapeutic treatment of diabetes, complications of diabetes, hyperlipemia and others.
    Type: Application
    Filed: May 21, 2004
    Publication date: January 13, 2005
    Applicant: KOWA Company, Ltd.
    Inventors: Keisuke Inoue, Tsutomu Toma, Takahiro Kitamura, Yukiyoshi Yamazaki, Tetsuya Ishikawa
  • Publication number: 20040147516
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): 1
    Type: Application
    Filed: January 15, 2004
    Publication date: July 29, 2004
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20040058913
    Abstract: A cyclic diamine compound of formula (1): 1
    Type: Application
    Filed: August 13, 2003
    Publication date: March 25, 2004
    Applicant: KOWA CO., LTD.
    Inventors: Tatsuhiko Kodama, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Takeshi Doi, Yoshinori Kyotani
  • Publication number: 20040010147
    Abstract: A cyclic amine compound represented by the following general formula (1): 1
    Type: Application
    Filed: July 10, 2002
    Publication date: January 15, 2004
    Applicant: KOWA CO., LTD.
    Inventors: Tatsuhiko Kodama, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Shunji Takemura, Takeshi Doi, Yoshinori Kyotani, Masao Ohkuchi
  • Patent number: 6653334
    Abstract: The present invention is directed to a benzoxazole compound represented by the following formula (1): (wherein R1 represents an alkyl group, a C6-10 aryl-C1-8 alkyl group, etc.; each of R2 and R3, which are identical to or different from each other, represents a hydrogen atom, a methyl group, or an ethyl group; and n represents a number of 1 to 3) or a salt thereof and to a pharmaceutical compound containing the same. These compounds electively activate PPAR&agr;.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: November 25, 2003
    Assignee: Kowa Co., Ltd.
    Inventors: Yukiyoshi Yamazaki, Tsutomu Toma, Masahiro Nishikawa, Hidefumi Ozawa, Ayumu Okuda, Kazutoyo Abe, Soichi Oda
  • Patent number: 6632810
    Abstract: A cyclic diamine compound of formula (1): wherein R1 and R2 are individually a hydrogen atom or a methoxy group, provided R1 is a methoxy group when R2 is a hydrogen atom, or a hydrogen atom when R2 is a methoxy group; A is an oxygen atom, a sulfur atom, CH═CH, CH═N or NR3, in which R3 is a hydrogen atom, or a lower alkyl, hydroxy lower alkyl, lower alkoxy lower alkyl, aryl or aryl lower alkyl group; B is a nitrogen atom, CH or CR4, in which R4 is a hydrogen atom, or a lower alkyl, hydroxy lower alkyl, lower alkoxy lower alkyl, aryl or aryl lower alkyl group; m is 1 or 2; and n is a number of 1 to 5, an acid-addition salt thereof, or a hydrate thereof. The compound has inhibitory effects on cell adhesion and is useful for treatment of allergy, asthma, rheumatism, arteriosclerosis, and inflammation.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: October 14, 2003
    Assignee: Kowa Co., Ltd.
    Inventors: Tatsuhiko Kodama, Masahiro Tamura, Toshiaki Oda, Yukiyoshi Yamazaki, Masahiro Nishikawa, Takeshi Doi, Yoshinori Kyotani