Patents by Inventor Shigenori Ohkawa

Shigenori Ohkawa 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: 6962933
    Abstract: A 1,3-thiazole compound substituted at the 5-position by a pyridyl group optionally having substituent(s) has a superior p38 MAP kinase inhibitory activity and TNF-? production inhibitory activity.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: November 8, 2005
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Shigenori Ohkawa, Kenichi Naruo, Hiroyuki Kimura, Seiji Miwatashi
  • Publication number: 20050187238
    Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates (i) a group represented by the formula: wherein ring B indicates a 5- to 7-membered ring, or (ii) a group represented by the formula: wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, provided that, when W is Wa, R3 is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R3 indicates a C6-14 aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or therapeutic drugs for nerve degenerative diseases and the li
    Type: Application
    Filed: March 17, 2005
    Publication date: August 25, 2005
    Inventors: Shigenori Ohkawa, Yasuyoshi Arikawa, Kouki Kato, Masahiro Okura, Masaki Setoh
  • Publication number: 20050148650
    Abstract: A PKB (Akt) activating agent comprising a compound represented by the formula (I): wherein R1 and R2: H, a hydrocarbon group or a heterocyclic group or R1 and R2 form a ring in cooperation with the adjacent carbon atom; R3: H, a hydrocarbon group or a heterocyclic group; W: represents a group represented by the formulas: wherein ring A: an optionally substituted benzene ring; ring B: an optionally substituted 5- to 7-membered nitrogen-containing heterocycle; R4: an aliphatic hydrocarbon group substituted with an aromatic group and further optionally substituted, or an acyl group containing an aromatic group; R5: H, C1-6 alkyl or acyl; R4c: an aromatic group, an aliphatic hydrocarbon group or acyl; and X:O or S; Y:O, S or NH; and ring C: an optionally substituted benzene ring, or a salt or a prodrug thereof, and use of the activating agent in prevention or treatment of depression, anxiety, manic-depressive psychosis or PTSD are provided.
    Type: Application
    Filed: February 28, 2003
    Publication date: July 7, 2005
    Inventors: Shigenori Ohkawa, Masaomi Miyamoto
  • Publication number: 20050085553
    Abstract: It is intended to provide agents for treating mild cognitive impairment which comprise compounds having an effect of inhibiting the production, secretion, aggregation, and/or accumulation of ?-amyloid proteins, prodrugs thereof or salts of the same and inhibit the progress of mild cognitive impairment to Alzheimer's disease using the same.
    Type: Application
    Filed: December 25, 2002
    Publication date: April 21, 2005
    Inventors: Masaomi Miyamato, Hideki Takahashi, Hiroaki Fukumoto, Shigenori Ohkawa
  • Publication number: 20050080113
    Abstract: The present invention relates to an agent for the prophylaxis or treatment of pain, an agent for suppressing activation of osteoclast, and an inhibitor of osteoclast formation, which contains a p38 MAP kinase inhibitor and/or a TNF-? production inhibitor.
    Type: Application
    Filed: June 10, 2002
    Publication date: April 14, 2005
    Inventors: Shigenori Ohkawa, Ken-ichi Naruo, Shigeru Morimoto, Seiji Miwatashi
  • Patent number: 6872718
    Abstract: A compound represented by the formula: wherein Ring A is a non-aromatic 5- to 7-membered nitrogen-containing heterocyclic ring which may be further substituted, Ring B is benzene ring which is further substituted, Ring C is a dihydrofuran-ring which may be further substituted and R is hydrogen atom or an acyl group or a salt thereof has an excellent lipid peroxidation inhibitory activity and is useful as a lipid peroxidation inhibitor.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: March 29, 2005
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Tadatoshi Hashimoto, Tetsuya Tsukamoto
  • Publication number: 20040167171
    Abstract: A compound represented by the formula: 1
    Type: Application
    Filed: December 18, 2003
    Publication date: August 26, 2004
    Inventors: Shigenori Ohkawa, Masaomi Miyamoto, Masahiro Okura, Tetsuya Tsukamoto
  • Publication number: 20040063946
    Abstract: The present invention relates to a c-Jun N-terminal kinase inhibitor containing an azole compound (I) substituted by a nitrogen-containing aromatic group having substituent(s)(except a compound represented by the formula: 1
    Type: Application
    Filed: July 30, 2003
    Publication date: April 1, 2004
    Inventors: Shigenori Ohkawa, Kenichi Naruo, Seiji Miwatashi, Hiroyuki Kimura, Tomohiro Kawamoto
  • Publication number: 20040053973
    Abstract: (1) A 1,3-thiazole compound of which the 5-position is substituted with a 4-pyridyl group having a substituent including no aromatic group or (2) a 1,3-thiazole compound of which the 5-position is substituted with a pyridyl group having at the position adjacent to a nitrogen atom of the pyridyl group a substituent including no aromatic group has an excellent p38 MAP kinase inhibitory activity.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 18, 2004
    Inventors: Shigenori Ohkawa, Ken-ichi Naruo, Seiji Miwatashi, Hiroyuki Kimura
  • Patent number: 6620825
    Abstract: A pharmaceutical composition for antagonizing adenosine at adenosine A3 receptors which comprises a 1,3-azole compound substituted on the 4- or 5-position, or both, by a pyridyl which may be substituted is provided and can be used as a prophylactic and therapeutic agent for asthma, allergosis, inflammation, and so on.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: September 16, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Hiroyuki Kimura, Naoyuki Kanzaki
  • Patent number: 6583146
    Abstract: Compounds represented by general formula (I): and salts thereof, exhibiting excellent adenosine A3 receptor antagonism: wherein A is an optionally substituted benzene ring; B may be further substituted; and R1 is an optionally substituted cyclic group.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: June 24, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Naoyuki Kanzaki, Seiji Miwatashi
  • Patent number: 6479536
    Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates (i) a group represented by the formula:  wherein ring B indicates a 5- to 7-membered ring, or (ii) a group represented by the formula:  wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, provided that, when W is Wa, R3 is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R3 indicates a C6-14 aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or thera
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: November 12, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Yasuyoshi Arikawa, Kouki Kato, Masahiro Okura, Masaki Setoh
  • Publication number: 20020160996
    Abstract: Compounds represented by the formula: 1
    Type: Application
    Filed: April 11, 2002
    Publication date: October 31, 2002
    Inventors: Shigenori Ohkawa, Yasuyoshi Arikawa, Kouki Kato, Masahiro Okura, Masaki Setoh
  • Patent number: 6436966
    Abstract: A pharmaceutical composition for antagonizing adenosine at adenosine A3 receptors which comprises a 1,3-azole compound substituted on the 4- or 5-position, or both, by a pyridyl which may be substituted is provided and can be used as a prophylactic and therapeutic agent for asthma, allergosis, inflammation, and so on.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: August 20, 2002
    Assignee: Takeda Chemical Ind., Ltd.
    Inventors: Shigenori Ohkawa, Hiroyuki Kimura, Naoyuki Kanzaki
  • Patent number: 6417213
    Abstract: A compound of the formula wherein R1 is H or a substituent; m is 1-3; Ar is an aromatic group which may be substituted; X is a bond or a divalent straight-chain group having 1-6 atoms which may be substituted; Y is —S—, —O—, or —N(R2)— (R2 is H or a substituent group), Z is —N═ or —C(R3)═ (R3 is H or a hydrocarbon group), ring A is a benzene ring; ring B is a 5- to 7-membered ring which may be substituted, or a salt thereof is useful for eliciting a prostaglandin I2 receptor agonistic effect.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: July 9, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Masaki Setoh, Zen-ichi Terashita
  • Patent number: 6348485
    Abstract: The present invention provides a pharmaceutical composition for treating or preventing sleep disorders which comprises (S)-N-[2-(1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl]propionamide in combination with at least one active component selected from zolpidem, zopiclone, triazolam and brotizolam.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: February 19, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Masaomi Miyamoto
  • Publication number: 20020006944
    Abstract: A compound of the formula: 1
    Type: Application
    Filed: March 7, 2001
    Publication date: January 17, 2002
    Inventors: Shigenori Ohkawa, Masaki Setoh, Zen-ichi Terashita
  • Patent number: 6248766
    Abstract: A compound of the formula: wherein R1 is H or a substituent; m is 1-3; Ar is an aromatic group which may be substituted; X is a bond or a divalent straight-chain group having 1-6 atoms which may be substituted; Y is —S—, —O—, or —N(R2— (R2 is H or a substituent group), Z is —N═ or —C(R3)═ (R3 is H or a hydrocarbon group), ring A is a benzene ring; ring B is a 5- to 7-membered ring which may be substituted, or a salt thereof is useful for eliciting a prostaglandin I2 receptor agonistic effect.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: June 19, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Masaki Setoh, Zen-ichi Terashita
  • Patent number: 6235789
    Abstract: A compound of the formula wherein R1 and R2 are H, a hydrocarbon group or a heterocyclic group, or R1 and R2 are combinedly a spiro ring; R3 is a hydrocarbon group, a substituted amino group, a substituted hydroxyl group or a heterocyclic group; R4 is H or alkyl; ring A is a substituted benzene ring; m and n denote 1 to 4; {overscore (.........)} means a single or double bond or a salt, a process of producing thereof and a composition having a binding affinity for melatonin receptor.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: May 22, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Osamu Uchikawa, Masaomi Miyamoto
  • Patent number: 6218429
    Abstract: A compound of the formula: wherein R1 is an optionally substituted hydrocarbon, amino or heterocyclic group; R2 is H or an optionally substituted hydrocarbon group; R3 is H or an optionally substituted hydrocarbon or heterocyclic group; X is CHR4, NR4, O or S in which R4 is H or an optionally substituted hydrocarbon group; Y is C, CH or N; ring A is optionally substituted 5- to 7-membered ring; ring B is an optionally substituted benzene ring; and m is 1 to 4, or a salt thereof, a process for producing it, an intermediate for the production and a pharmaceutical composition comprising it are provided.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: April 17, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigenori Ohkawa, Osamu Uchikawa, Kohji Fukatsu, Masaomi Miyamoto