Patents by Inventor Kiyoshi Kasai

Kiyoshi Kasai 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: 9585885
    Abstract: [Problem] To provide a novel compound that exhibits an agonistic effect on dopamine D2 receptors. [Solution] The present invention provides a compound represented by the general formula (I): in which R1 is C1-6 alkyl or the like; R2 is hydrogen or the like; R3 and R4 are each hydrogen, C1-6 alkyl, R10R11N—C1-6 alkyl, aralkyl, or the like; R5 and R6 are hydrogen or the like; and R7 is hydrogen or the like, or a pharmaceutically acceptable salt thereof, a pharmaceutical compositions containing same and uses for said compound/salt and composition. The compounds of the present invention exhibit potent dopamine D2 receptor simulating activities and thus are useful as a treating or preventing agent for Parkinson's disease and the like.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: March 7, 2017
    Assignee: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Toshihiro Nishimura, Yasunori Ueno, Kiyoshi Kasai, Masako Yoshida
  • Patent number: 9447232
    Abstract: A process for producing carrier polymer particles comprising covering the surface of organic polymer particles having a particle diameter of 0.1 to 20 micrometers with a saccharide by chemically bonding the organic polymers and the saccharide.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 20, 2016
    Assignee: JSR CORPORATION
    Inventors: Masayuki Takahashi, Tetsuo Fukuta, Kiyoshi Kasai, Toshihiro Ogawa, Satoshi Katayose, Kouji Tamori, Kinji Yamada
  • Publication number: 20150315183
    Abstract: [Problem] To provide a novel compound that exhibits an agonistic effect on dopamine D2 receptors. [Solution] The present invention provides a compound represented by the general formula (I): in which R1 is C1-6 alkyl or the like; R2 is hydrogen or the like; R3 and R4 are each hydrogen, C1-6 alkyl, R10R11N—C1-6 alkyl, aralkyl, or the like; R5 and R6 are hydrogen or the like; and R7 is hydrogen or the like, or a pharmaceutically acceptable salt thereof, a pharmaceutical compositions containing same and uses for said compound/salt and composition. The compounds of the present invention exhibit potent dopamine D2 receptor simulating activities and thus are useful as a treating or preventing agent for Parkinson's disease and the like.
    Type: Application
    Filed: December 6, 2013
    Publication date: November 5, 2015
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Toshihiro NISHIMURA, Yasunori UENO, Kiyoshi KASAI, Masako YOSHIDA
  • Patent number: 9138434
    Abstract: The present invention provides compounds represented by the general formula (I): or pharmaceutical acceptable salts thereof, wherein R1 is cyano or the like; R2 and R3 are hydrogen or the like; R4 is C1-6 alkyl or the like; R5 is C1-6 alkyl, halo-C1-6 alkyl, cycloalkyl, cycloalkyl-C1-6 alkyl, aralkyl or the like; R6 and R7 are each hydrogen, C1-6 alkyl, halo-C1-6 alkyl, cycloalkyl, C1-6 alkoxy-C1-6 alkyl, R12R13N—C1-6 alkyl or the like, which exhibit potent dopamine D2 receptor stimulating activities. The present invention also provides pharmaceutical compositions containing said compound, and uses thereof.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: September 22, 2015
    Assignee: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Toshihiro Nishimura, Hirotaka Teranishi, Masako Yoshida, Yasunori Ueno, Kiyoshi Kasai
  • Publication number: 20140243311
    Abstract: The present invention provides compounds represented by the general formula (I): or pharmaceutical acceptable salts thereof, wherein R1 is cyano or the like; R2 and R3 are hydrogen or the like; R4 is C1-6 alkyl or the like; R5 is C1-6 alkyl, halo-C1-6 alkyl, cycloalkyl, cycloalkyl-C1-6 alkyl, aralkyl or the like; R6 and R7 are each hydrogen, C1-6 alkyl, halo-C1-6 alkyl, cycloalkyl, C1-6 alkoxy-C1-6 alkyl, R12R13N—C1-6 alkyl or the like, which exhibit potent dopamine D2 receptor stimulating activities. The present invention also provides pharmaceutical compositions containing said compound, and uses thereof.
    Type: Application
    Filed: March 12, 2012
    Publication date: August 28, 2014
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Toshihiro Nishimura, Hirotaka Teranshi, Masako Yoshida, Yasunori Ueno, Kiyoshi Kasai
  • Patent number: 8703289
    Abstract: The organic polymer particles comprise a carboxyl group and 2,3-dihydroxypropyl group, and the magnetic particles for diagnostics comprise fine magnetic material particles and a polymer part containing a hydrophilic polymer part and a crosslinked polymer part, a dry coating film obtained from a water dispersion thereof having a contact angle with water of 5° to 60°. The process for producing the carboxyl group-containing particles comprises a step of producing an ester bond by reacting a hydroxyl group in organic polymer particles having the hydroxyl group with a carboxylic anhydride. The organic polymer particles comprise a hydroxyl group originating from a 2,3-dihydroxypropyl group and a polyoxyethylene group.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 22, 2014
    Assignee: JSR Corporation
    Inventors: Kouji Tamori, Tetsuo Fukuta, Mitsuhiro Murata, Masaru Ueno, Satoshi Katayose, Eiji Takamoto, Kiyoshi Kasai
  • Publication number: 20130164761
    Abstract: Carrier polymer particles comprising organic polymer particles having a particle diameter of 0.1 to 20 micrometers and a saccharide with which the surface of the organic polymer particles is covered, the organic polymer particles and the saccharide being chemically bonded.
    Type: Application
    Filed: January 14, 2013
    Publication date: June 27, 2013
    Inventors: Masayuki TAKAHASHI, Tetsuo Fukuda, Kiyoshi Kasai, Toshihiro Ogawa, Satoshi Katayose, Kouji Tamori, Kinji Yamada
  • Patent number: 8022192
    Abstract: The present invention relates to a method for preparing the glucopyranosyloxypyrazole derivatives which are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications, obesity or the like. A glucopyranosyloxypyrazole derivative can be easily and efficiently prepared by allowing a benzylpyrazole derivative represented by the general formula: wherein R1, R2, R3, R4 and R5 may be the same or different, for example each of them is a hydrogen atom, a halogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, R6 is an alkyl group, for example R7 is a hydrogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, to react with a compound represented by the general formula: wherein as an example, PG1 is a pivaloyl group or the like, as an example, X1 is a bromine atom or the like, therefore the present invention is extremely useful as a method for preparing pharmaceutical compounds.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: September 20, 2011
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kiyoshi Kasai, Tetsuji Ozawa, Nobuhiko Fushimi, Hidetoshi Isawa, Ken Kikuchi, Masahiro Kobayashi, Junichi Sonehara, Minoru Kubota
  • Publication number: 20110201793
    Abstract: The present invention relates to a method for preparing the glucopyranosyloxypyrazole derivatives which are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications, obesity or the like. A glucopyranosyloxypyrazole derivative can be easily and efficiently prepared by allowing a benzylpyrazole derivative represented by the general formula: wherein R1, R2, R3, R4 and R5 may be the same or different, for example each of them is a hydrogen atom, a halogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, R6 is an alkyl group, for example R7 is a hydrogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, to react with a compound represented by the general formula: wherein as an example, PG1 is a pivaloyl group or the like, as an example, X1 is a bromine atom or the like, therefore the present invention is extremely useful as a method for preparing pharmaceutical compounds.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Kiyoshi KASAI, Tetsuji OZAWA, Nobuhiko FUSHIMI, Hidetoshi ISAWA, Ken KIKUCHI, Masahiro KOBAYASHI, Junichi SONEHARA, Minoru KUBOTA
  • Publication number: 20110184155
    Abstract: Carrier polymer particles comprising organic polymer particles having a particle diameter of 0.1 to 20 micrometers and a saccharide with which the surface of the organic polymer particles is covered, the organic polymer particles and the saccharide being chemically bonded.
    Type: Application
    Filed: February 11, 2011
    Publication date: July 28, 2011
    Applicant: JSR CORPORATION
    Inventors: Masayuki TAKAHASHI, Tetsuo Fukuta, Kiyoshi Kasai, Toshihiro Ogawa, Satoshi Katayose, Kouji Tamori, Kinji Yamada
  • Patent number: 7763654
    Abstract: The present invention provides a novel crystal polymorph of ethyl (?)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate hydrochloride which can be determined by characteristic diffraction peaks of the powder X-ray diffraction or the like, and obtained from ethyl (?)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate by a specific method.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: July 27, 2010
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kiyoshi Kasai, Michio Toda
  • Patent number: 7579507
    Abstract: Crystals of a salt of 4?-{2-[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethylamino]ethoxy}-3-isopropyl-3?,5?-dimethylbiphenyl-4-carboxylic acid. The ? type, ? type and ? type crystals produced by treating hydrochloride of 4?-{2-[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethylamino]ethoxy}-3-isopropyl-3?,5?-dimethylbiphenyl-4-carboxylic acid with specified solvents, which can be discriminated by the characteristic diffraction peaks of powder X-ray diffractometry and the like.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 25, 2009
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kiyoshi Kasai, Takehiro Ishikawa, Tetsuji Ozawa, Koji Kamata, Ritsu Suzuki, Hideki Takeuchi
  • Publication number: 20090069421
    Abstract: The present invention provides a novel crystal polymorph of ethyl (?)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate hydrochloride which can be determined by characteristic diffraction peaks of the powder X-ray diffraction or the like, and obtained from ethyl (?)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate by a specific method.
    Type: Application
    Filed: April 24, 2006
    Publication date: March 12, 2009
    Applicant: Kissei Pharmaceutical Co., Ltd,
    Inventors: Kiyoshi Kasai, Michio Toda
  • Publication number: 20090062518
    Abstract: The present invention relates to a method for preparing the glucopyranosyloxypyrazole derivatives which are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications, obesity or the like. A glucopyranosyloxypyrazole derivative can be easily and efficiently prepared by allowing a benzylpyrazole derivative represented by the general formula: wherein R1, R2, R3, R4 and R5 may be the same or different, for example each of them is a hydrogen atom, a halogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, R6 is an alkyl group, for example R7 is a hydrogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, to react with a compound represented by the general formula: wherein as an example, PG1 is a pivaloyl group or the like, as an example, X1 is a bromine atom or the like, therefore the present invention is extremely useful as a method for preparing pharmaceutical compounds.
    Type: Application
    Filed: March 16, 2006
    Publication date: March 5, 2009
    Applicant: Kissei Pharmaceutical Co., Ltd,
    Inventors: Kiyoshi Kasai, Tetsuji Ozawa, Nobuhiko Fushimi, Hidetoshi Isawa, Ken Kikuchi, Masahiro Kobayashi, Junichi Sonehara, Minoru Kubota
  • Publication number: 20090030218
    Abstract: The present invention provides an industrial method for preparing aminoalcohol derivatives (I) having a biphenyl group, biphenyloxyacetaldehyde derivatives which are used therefore, preparing methods thereof, and intermediates used for the preparing method. The present invention also provides a preparing method including processes for preparing a 3-substituted biphenylcarboxylic acid derivative represented by the following general formula: by allowing a 3-fluorobiphenylcarboxylic acid derivative prepared from a 3-fluorobiphenylcarbonitrile derivative which can be prepared by allowing a 4-halophenol derivative to react with a 2-fluorobenzonitrile derivative which is substituted by a leaving group at 4-position to react with an organometallic reagent.
    Type: Application
    Filed: May 17, 2006
    Publication date: January 29, 2009
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Kiyoshi Kasai, Minoru Kubota, Ritsu Suzuki, Tetsuji Ozawa, Takehiro Ishikawa, Makoto Kobayashi, Junichi Sonehara, Masahiro Kobayashi
  • Publication number: 20090014682
    Abstract: Carrier polymer particles comprising organic polymer particles having a particle diameter of 0.1 to 20 micrometers and a saccharide with which the surface of the organic polymer particles is covered, the organic polymer particles and the saccharide being chemically bonded.
    Type: Application
    Filed: May 17, 2006
    Publication date: January 15, 2009
    Applicant: JSR CORPORATION
    Inventors: Masayuki Takahashi, Tetsuo Fukuta, Kiyoshi Kasai, Toshihiro Ogawa, Satoshi Katayose, Kouji Tamori, Kinji Yamada
  • Publication number: 20080076826
    Abstract: Crystals of a salt of 4?-{2-[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethylamino]ethoxy}-3-isopropyl-3?, 5?-dimethylbiphenyl-4-carboxylic acid. The ? type, ? type and ? type crystals produced by treating hydrochloride of 4?-{2-[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl-amino]ethoxy}-3-isopropyl-3?,5?-dimethylbiphenyl-4-carboxylic acid with specified solvents, which can be discriminated by the characteristic diffraction peaks of powder X-ray diffractometry and the like.
    Type: Application
    Filed: October 12, 2007
    Publication date: March 27, 2008
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Kiyoshi KASAI, Takehiro ISHIKAWA, Tetsuji OZAWA, Koji KAMATA, Ritsu SUZUKI, Hideki TAKEUCHI
  • Publication number: 20070099814
    Abstract: The organic polymer particles comprise a carboxyl group and 2,3-dihydroxypropyl group, and the magnetic particles for diagnostics comprise fine magnetic material particles and a polymer part containing a hydrophilic polymer part and a crosslinked polymer part, a dry coating film obtained from a water dispersion thereof having a contact angle with water of 5° to 60°. The process for producing the carboxyl group-containing particles comprises a step of producing an ester bond by reacting a hydroxyl group in organic polymer particles having the hydroxyl group with a carboxylic anhydride. The organic polymer particles comprise a hydroxyl group originating from a 2,3-dihydroxypropyl group and a polyoxyethylene group.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 3, 2007
    Applicant: JSR Corporation
    Inventors: Kouji Tamori, Tetsuo Fukuta, Mitsuhiro Murata, Masaru Ueno, Satoshi Katayose, Eiji Takamoto, Kiyoshi Kasai
  • Patent number: 7208520
    Abstract: The present invention provides ethyl (?)-2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxy]acetate hydrochloride, crystalline forms thereof and pharmaceutical compositions containing them, which have excellent ?3-adrenoceptor stimulating effects, therapeutic effects on pollakiuria or urinary incontinence and storage stabilities and are useful as a medicament.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: April 24, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hidetoshi Isawa, Yukihiko Hotei, Kiyoshi Kasai, Junichi Sonehara, Satoshi Akahane, Hiromu Harada
  • Publication number: 20040242686
    Abstract: The present invention provides ethyl (−)-2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxy]acetate hydrochloride, crystalline forms thereof and pharmaceutical compositions containing them, which have excellent &bgr;3-adrenoceptor stimulating effects, therapeutic effects on pollakiuria or urinary incontinence and storage stabilities and are useful as a medicament.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 2, 2004
    Inventors: Hidetoshi Isawa, Yukihiko Hotei, Kiyoshi Kasai, Junichi Sonehara, Satoshi Akahane, Hiromu Harada