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).
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Publication number: 20250034071Abstract: 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: ApplicationFiled: September 8, 2022Publication date: January 30, 2025Applicant: 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
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Publication number: 20250019332Abstract: 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: ApplicationFiled: September 8, 2022Publication date: January 16, 2025Inventors: 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
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Publication number: 20140005144Abstract: 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: ApplicationFiled: August 28, 2013Publication date: January 2, 2014Applicant: BIZEN CHEMICAL CO., LTD.Inventors: Teruyuki Kanada, Toru Kuyama, Takahiko Hada, Takafumi Ishihara
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Publication number: 20110065673Abstract: 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: ApplicationFiled: May 8, 2008Publication date: March 17, 2011Applicant: BIZEN CHEMICAL CO., LTD.Inventors: Teruyuki Kanada, Toru Kuyama, Takahiko Hada, Takafumi Ishihara
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Patent number: 7820667Abstract: 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: GrantFiled: August 24, 2005Date of Patent: October 26, 2010Assignee: Daiichi Sankyo Company, LimitedInventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
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Publication number: 20080262217Abstract: 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: ApplicationFiled: June 24, 2008Publication date: October 23, 2008Applicant: BIZEN CHEMICAL CO., LTD.Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
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Patent number: 7396543Abstract: 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: GrantFiled: December 6, 2002Date of Patent: July 8, 2008Assignee: Bizen Chemical Co., Ltd.Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
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Publication number: 20060009458Abstract: 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: ApplicationFiled: August 24, 2005Publication date: January 12, 2006Inventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
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Publication number: 20050048142Abstract: 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: ApplicationFiled: December 6, 2002Publication date: March 3, 2005Inventors: Kazuyoshi Matsunaga, Takafumi Ishihara
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Publication number: 20030232835Abstract: 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: ApplicationFiled: April 8, 2003Publication date: December 18, 2003Inventors: Takafumi Ishihara, Yoshiharu Kanayama, Mikio Okamura, Junichi Yoshikawa, Haruo Shintaku
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Patent number: 6432468Abstract: 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: GrantFiled: January 30, 1997Date of Patent: August 13, 2002Assignee: Suntory LimitedInventors: Kengo Akimoto, Kenichi Higashiyama, Takafumi Ishihara, Teruyuki Kanada, Yoshiharu Tanaka, Motoharu Arai
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Patent number: 5416082Abstract: 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: GrantFiled: February 14, 1994Date of Patent: May 16, 1995Assignee: Suntory LimitedInventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
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Patent number: 5399557Abstract: 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: GrantFiled: April 7, 1993Date of Patent: March 21, 1995Assignee: Suntory LimitedInventors: Akira Mizuno, Mikiko Miya, Norio Inomata, Toshio Tatsuoka, Takafumi Ishihara
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Patent number: 5397780Abstract: 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: GrantFiled: April 6, 1993Date of Patent: March 14, 1995Assignee: Suntory LimitedInventors: Akira Mizuno, Hidetsura Cho, Mikiko Miya, Toshio Tatsuoka, Takafumi Ishihara
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Patent number: 5391731Abstract: 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: GrantFiled: December 9, 1992Date of Patent: February 21, 1995Assignee: Suntory LimitedInventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
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Patent number: 5206239Abstract: 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: GrantFiled: February 7, 1991Date of Patent: April 27, 1993Assignee: Suntory LimitedInventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
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Patent number: 4973588Abstract: 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: GrantFiled: February 10, 1989Date of Patent: November 27, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Noriaki Kihara, Ikuo Tomino, Mitsuyuki Takesue, Takafumi Ishihara
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Patent number: 4962200Abstract: 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: GrantFiled: April 29, 1988Date of Patent: October 9, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Noriaki Kihara, Ikuo Tomino, Hiroaki Tan, Takafumi Ishihara
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Patent number: 4845094Abstract: 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: GrantFiled: June 19, 1987Date of Patent: July 4, 1989Assignee: Suntory LimitedInventors: Toshio Tatsuoka, Kayoko Nomura, Fumio Satoh, Takafumi Ishihara, Seiji Miyano, Kunihiro Sumoto
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Patent number: 4751232Abstract: 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: GrantFiled: February 21, 1985Date of Patent: June 14, 1988Assignee: Suntory LimitedInventors: Fumio Satoh, Keiyu Shima, Takafumi Ishihara