Patents by Inventor Takafumi Ishihara

Takafumi Ishihara 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: 20250034071
    Abstract: Compounds and use of the compounds for formula (I) where X is selected from the group consisting of a single bond, O, N—(C1-C4)-alkyl, N—Ar1, CR5R6, S, S(O) and SO2; Z1 and Z2 are independently selected from hydrogen, -Alk-OH, —CH2—Ar2—CH2—OH, -Alk?-C(O)ORx, —CH2—Ar2—C(O)ORx and —C(O)—Ar2—C(O)ORx, where Rx is selected from the group consisting of hydrogen, phenyl, benzyl and C1-C4-alkyl; R1 and R2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R5 is selected from the group consisting of hydrogen, C1-C4-alkyl and a radical Ar1; R6 is selected from the group consisting of hydrogen and C1-C4-alkyl; Alk is C2-C4-alkandiyl; provided that R1 and R2 are not both phenyl, if R3 and R4 are both hydrogen.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 30, 2025
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Noriyuki KATO, Katsushi NISHIMORI, Atsushi MOTEGI, Kentaro ISHIHARA, Shinya IKEDA, Takafumi WATANABE, Tatsunobu OGATA, Kazutaka TAKAMATSU, Yutaro HARADA, Vasyl ANDRUSHKO, Karl REUTER, Philipp KOSCHKER, Florian STOLZ, Mark KANTOR
  • Publication number: 20250019332
    Abstract: The present invention relates to compounds of the formula (I) where X is selected from the group consisting of a single bond, O, N—(C1-C4)-alkyl, N—Ar1, CR5R6, S, S(O) and SO2; Z1 and Z2 are independently selected from hydrogen, -Alk-OH, —CH2—Ar2—CH2—OH, -Alk?-C(O)ORx, —CH2—Ar2—C(O)ORx and —C(O)—Ar2—C(O)ORx, where Rx is selected from the group consisting of hydrogen, phenyl, benzyl and C1-C4-alkyl; R1 and R2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R5 is selected from the group consisting of hydrogen, C1-C4-alkyl and a radical Ar1; R6 is selected from the group consisting of hydrogen and C1-C4-alkyl; Alk is C2-C4-alkandiyl; provided that R1 and R2 are not both phenyl, if R3 and R4 are both hydrogen.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 16, 2025
    Inventors: Vasyl ANDRUSHKO, Karl REUTER, Philipp KOSCHKER, Florian STOLZ, Mark KANTOR, Noriyuki KATO, Katsushi NISHIMORI, Atsushi MOTEGI, Kentaro ISHIHARA, Shinya IKEDA, Takafumi WATANABE, Tatsunobu OGATA, Kazutaka TAKAMATSU, Yutaro HARADA
  • Publication number: 20140005144
    Abstract: It is an object of the present invention to provide a leukotriene receptor antagonist that can be conveniently prepared from a natural source. The object has been achieved by finding that a marine product such as a squid phospholipid extract or an Akiami paste shrimp phospholipid extract contains the antagonists of BLT and CysLT1, which are leukotriene receptors. Therefore, the present invention provides a dietary composition and a pharmaceutical composition for inhibiting the activity of leukotriene receptors, containing a squid phospholipid extract or an Akiami paste shrimp phospholipid extract.
    Type: Application
    Filed: August 28, 2013
    Publication date: January 2, 2014
    Applicant: BIZEN CHEMICAL CO., LTD.
    Inventors: Teruyuki Kanada, Toru Kuyama, Takahiko Hada, Takafumi Ishihara
  • Publication number: 20110065673
    Abstract: It is an object of the present invention to provide a leukotriene receptor antagonist that can be conveniently prepared from a natural source. The object has been achieved by finding that a marine product such as a squid phospholipid extract or an Akiami paste shrimp phospholipid extract contains the antagonists of BLT and CysLT1, which are leukotriene receptors. Therefore, the present invention provides a dietary composition and a pharmaceutical composition for inhibiting the activity of leukotriene receptors, containing a squid phospholipid extract or an Akiami paste shrimp phospholipid extract.
    Type: Application
    Filed: May 8, 2008
    Publication date: March 17, 2011
    Applicant: BIZEN CHEMICAL CO., LTD.
    Inventors: Teruyuki Kanada, Toru Kuyama, Takahiko Hada, Takafumi Ishihara
  • Patent number: 7820667
    Abstract: It is an object of the present invention to provide a therapeutic agent for effectively preventing or ameliorating diseases caused by dysfunction of NOS. The present invention provides a pharmaceutical composition for preventing and/or treating diseases associated with dysfunction of NOS, comprising as an effective ingredient, a compound of the formula (I): wherein R1 and R2 each represents a hydrogen atom or, taken together with each other, represent a single bond, while R3 represents —CH(OH)CH(OH)CH3, —CH(OCOCH3)CH(OCOCH3)CH3, —CH3, —CH2OH, or a phenyl group when R1 and R2 each represents a hydrogen atom, or —COCH(OH)CH3 when R1 and R2 together represent a single bond, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: October 26, 2010
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
  • Publication number: 20080262217
    Abstract: A method of producing glycogen is provided. The method comprises the step of heat- and pressure-treating a sugar-containing material under acidic conditions. The sugar-containing material is a polysaccharide or an oligosaccharide. Alternatively, the sugar-containing material is a plant material selected from the group consisting of Panax notoginseng, Yun Nan San-chi powder (trademark), Panax ginseng, wheat flour, soybean, soy flour, shiitake, and coffee extract residue. Representatively, the glycogen includes a molecule having a molecular weight of 10,000 or less. The glycogen has a specific rotation of [?]D+197° and anomeric proton peaks at 5.37 ppm and 4.95 to 5.33 ppm in 1H NMR spectra.
    Type: Application
    Filed: June 24, 2008
    Publication date: October 23, 2008
    Applicant: BIZEN CHEMICAL CO., LTD.
    Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
  • Patent number: 7396543
    Abstract: A method of producing glycogen is provided. The method comprises the step of heat- and pressure-treating a sugar-containing material under acidic conditions. The sugar-containing material is a polysaccharide or an oligosaccharide. Alternatively, the sugar-containing material is a plant material selected from the group consisting of Panax notoginseng, Yun Nan San-chi powder (trademark), Panax ginseng, wheat flour, soybean, soy flour, shiitake, and coffee extract residue. Representatively, the glycogen includes a molecule having a molecular weight of 10,000 or less. The glycogen has a specific rotation of [?]D+197° and anomeric proton peaks at 5.37 ppm and 4.95 to 5.33 ppm in 1H NMR spectra.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 8, 2008
    Assignee: Bizen Chemical Co., Ltd.
    Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
  • Publication number: 20060009458
    Abstract: It is an object of the present invention to provide a therapeutic agent for effectively preventing or ameliorating diseases caused by dysfunction of NOS. The present invention provides a pharmaceutical composition for preventing and/or treating diseases associated with dysfunction of NOS, comprising as an effective ingredient, a compound of the formula (I): wherein R1 and R2 each represents a hydrogen atom or, taken together with each other, represent a single bond, while R3 represents —CH(OH)CH(OH)CH3, —CH(OCOCH3)CH(OCOCH3)CH3, —CH3, —CH2OH, or a phenyl group when R1 and R2 each represents a hydrogen atom, or —COCH(OH)CH3 when R1 and R2 together represent a single bond, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: August 24, 2005
    Publication date: January 12, 2006
    Inventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
  • Publication number: 20050048142
    Abstract: A method of producing glycogen is provided. The method comprises the step of heat- and pressure-treating a sugar-containing material under acidic conditions. The sugar-containing material is a polysaccharide or an oligosaccharide. Alternatively, the sugar-containing material is a plant material selected from the group consisting of Panax notoginseng, Yun Nan San-chi powder (trademark), Panax ginseng, wheat flour, soybean, soy flour, shiitake, and coffee extract residue. Representatively, the glycogen includes a molecule having a molecular weight of 10,000 or less. The glycogen has a specific rotation of [?]D+197° and anomeric proton peaks at 5.37 ppm and 4.95 to 5.33 ppm in 1H NMR spectra.
    Type: Application
    Filed: December 6, 2002
    Publication date: March 3, 2005
    Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
  • Publication number: 20030232835
    Abstract: It is an object of the present invention to provide a therapeutic agent for effectively preventing or ameliorating diseases caused by dysfunction of NOS.
    Type: Application
    Filed: April 8, 2003
    Publication date: December 18, 2003
    Inventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
  • Patent number: 6432468
    Abstract: The present invention provides domestic fowl eggs having a high content of arachidonic acid and optionally docosahexaenoic acid obtained by feeding egg-laying domestic fowls &ohgr;6 highly unsaturated fatty acids and optionally &ohgr;3 highly unsaturated fatty acids, their production process, a lipid that originates from them, and a food that contains said lipid.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: August 13, 2002
    Assignee: Suntory Limited
    Inventors: Kengo Akimoto, Kenichi Higashiyama, Takafumi Ishihara, Teruyuki Kanada, Yoshiharu Tanaka, Motoharu Arai
  • Patent number: 5416082
    Abstract: Disclosed herein are pyrroloazepine derivatives having anti-.alpha..sub.1 activity and anti-serotonin activity represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: May 16, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5399557
    Abstract: This invention provides a pyrroloazepine compound represented by the following formula (I) or (II): ##STR1## wherein Z.sub.1, Z.sub.2, R, A and Y are defined in the claims. The pyrroloazepine compounds according to the present invention are drugs having excellent anti-serotonin action. Coupled with their high safety, they can therefore be used as novel therapeutics for ischemic heart diseases. In addition, the compounds of the present invention include those having anti-.alpha..sub.1 action. Such compounds are effective as hypotensive drugs. Pyrroloazepine compounds according to the present invention are therefore extremely useful as therapeutics for a wide variety of circulatory diseases.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: March 21, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Mikiko Miya, Norio Inomata, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5397780
    Abstract: This invention provides a pyrroloazepine derivative represented by the following formula (I): ##STR1## where the substituents are defined in the specification. The pyrroloazepine derivatives according to the present invention are drugs having excellent anti-.alpha..sub.1 action and anti-serotonin action and feature high safety. They can therefore be used, for example, as novel therapeutics for circulatory diseases.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: March 14, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Miya, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5391731
    Abstract: Disclosed herein are pyrroloazepine derivatives, which are useful as therapeutics for circulatory diseases, represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: February 21, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5206239
    Abstract: Disclosed herein are pyrroloazepine derivatives, which are useful as therapeutics for circulatory diseases, represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: April 27, 1993
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 4973588
    Abstract: A novel N-substituted imidazole or thioimidazole derivative and a pharmacologically acceptable acid addition salt thereof, which have a brain function-improving action, are disclosed. The derivative or salt is used as an effective ingredient of a brain function-improving medicine.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: November 27, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Noriaki Kihara, Ikuo Tomino, Mitsuyuki Takesue, Takafumi Ishihara
  • Patent number: 4962200
    Abstract: A novel nitrogen-containing compound capable of preventing hardening of blood vessels by controlling formation of peroxide lipids in cell membranes, which is valuable as an anti-arteriosclerotic agent, is disclosed.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: October 9, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Noriaki Kihara, Ikuo Tomino, Hiroaki Tan, Takafumi Ishihara
  • Patent number: 4845094
    Abstract: 2-phenylbenzoxepin derivatives having a hypoglycemic activity, hypotensive activity, and platelet coagulation inhibiting activity, a process for production of the derivatives, and pharmaceutical compositions containing the derivatives.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: July 4, 1989
    Assignee: Suntory Limited
    Inventors: Toshio Tatsuoka, Kayoko Nomura, Fumio Satoh, Takafumi Ishihara, Seiji Miyano, Kunihiro Sumoto
  • Patent number: 4751232
    Abstract: A novel pyrrolizidine derivative of the formula, ##STR1## which has potent antiarrhythmic activity and low toxicity is produced. The derivative can be synthesized: by acylating 2,6-xylidine to protect the amino group, nitrating the protected xylidine to introduce a nitro group at 3-position, reducing the nitro group to an amino group, followed by diazotizing and hydrolyzing, and then the resulted 3-hydroxy-2,6-dimethylaniline being condensed with 8-halocarbonylmethylpyrrolizidine; or by nitrating N-(2',6'-dimethyl)phenyl-8-pyrrolizidineacetamide to introduce a nitro group at 3'-position, reducing the nitro group to amino group, diazotizing the amino group and hydrolyzing the diazonium compound.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: June 14, 1988
    Assignee: Suntory Limited
    Inventors: Fumio Satoh, Keiyu Shima, Takafumi Ishihara