Patents Assigned to Sanwa Kagaku Kenkyusho Co., Ltd.
  • Publication number: 20120101137
    Abstract: The object of the present invention is to provide a compound having a glucokinase-activating effect. A pharmaceutical composition comprising a compound represented by the general formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient: wherein X means a nitrogen atom or CR6, wherein R6 means a hydrogen atom or a halogen atom; R1 means a hydrogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group or a C1-C6 alkylthio group; R2 means a hydrogen atom or a fluorine atom; R3 means a hydrogen atom or a C1-C6 alkyl group; and one of R4 and R5 means a hydrogen atom or a C1-C6 alkyl group, and the other means a C1-C6 alkylenecarboxylic acid, a C1-C6 alkylsulfonyl group, a C1-C6 alkylcarbonyl group, or CONH2.
    Type: Application
    Filed: June 26, 2010
    Publication date: April 26, 2012
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Tokuyuki Yamashita, Kaori Chikamatsu, Naoki Takahashi, Hisakazu Iwai, Masakazu Kogami, Masao Sakairi, Nobuhide Watanabe, Hiroki Fujieda, Daisuke Kataoka, Mitsuhiro Makino, Noriyasu Kato, Toshiyuki Miyazawa, Kazushige Nagai, Nobuyoshi Kasugai, Hiroyo Kataoka, Naoki Hiramatsu, Nobuaki Tsuruta, Yurie Yamada, Mika Miyoshi, Sei Murakami, Izumi Goto, Tohru Izuchi, Kimie Suzuki, Satoko Harada, Martin Lang, Markus Hans-Juergen Seifert, Kristina Kaarina Wolf
  • Patent number: 8097640
    Abstract: A prophylactic or therapeutic agent for diabetic maculopathy, which can be administered for a long time and exhibits efficacy in a mechanism different from that of existing medicines. The invention relates to a prophylactic or therapeutic agent for diabetic maculopathy, comprising, as an active ingredient, a compound represented by the general formula: wherein X represents a halogen or a hydrogen atom, R1 and R2 concurrently or differently represent a hydrogen atom or an optionally substituted C1 to C6 alkyl group, or R1 and R2, together with a nitrogen atom bound thereto and optionally another nitrogen atom or an oxygen atom, are combined to form a 5- to 6-membered heterocycle. Preferably, the compound is (2S,4S)-6-fluoro -2?,5?-dioxospiro chroman-4,4?-imidazolidine]-2-carboxamide. The invention also provides a model animal with diabetic maculopathy produced by subjecting a diabetic animal to intraocular ischemia/reperfusion to express edema in a retinal visual cell layer or in a macula lutea.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: January 17, 2012
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Noriaki Kato, Hiroshi Nagano, Kaori Taniko, Takahito Jomori
  • Patent number: 7947876
    Abstract: The present invention is regarding plants and plant storage organs thereof in which GLP-1 derivatives are accumulated, and methods of producing them. The transgenic plants and plant storage organs thereof accumulate tandem repeated GLP-1 derivatives cleavable with intestinal digestive enzyme to monomeric molecules and are produced by methods comprising: integrating into vectors linked DNAs which comprise tandem repeated DNAs encoding the GLP-1 derivative with trypsin resistance in which the amino acid in the 26th position is Gln, the amino acid in the 34th position is Asn or Asp, and C-terminal consists of Arg or Lys to produce monomeric molecules; introducing the vectors into plant cells; and redifferentiating the obtained transformants. The edible transgenic plants and plant storage organs are useful for treating diabetes and can be ingested by diabetic patients.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: May 24, 2011
    Assignees: Nippon Paper Industries Co., Ltd., Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Koichi Sugita, Saori Kasahara, Hiroyasu Ebinuma, Humio Takaiwa, Hiroshi Yasuda, Takahito Jomori, Yuji Hayashi, Akira Tashita
  • Publication number: 20110071166
    Abstract: The problem to be solved by the present invention is to provide a medicine which is excellent in the treatment of type 2 diabetes, diabetic complications or impaired glucose tolerance. The present invention provides a medicine characterized in that a compound represented by the following general formula (I), a salt thereof, or a solvate thereof, and at least one kind of other diabetic medicine: (wherein R1, R2, R3 and R4 are each a hydrogen atom, a trifluoromethyl group or a C1-3 alkyl group).
    Type: Application
    Filed: May 12, 2009
    Publication date: March 24, 2011
    Applicant: Sanwa Kagaku Kenkyusho Co., Ltd
    Inventors: Moritaka Goto, Satoko Yamashita, Keizo Nakaya, Tetsushi Tomoguri, Tsutomu Ishida, Masahiro Fuchigami
  • Patent number: 7910615
    Abstract: A prophylactic or therapeutic agent for diabetic maculopathy, which can be administered for a long time and exhibits efficacy in a mechanism different from that of existing medicines. The invention relates to a prophylactic or therapeutic agent for diabetic maculopathy, comprising, as an active ingredient, a compound represented by the general formula: wherein X represents a halogen or a hydrogen atom, R1 and R2 concurrently or differently represent a hydrogen atom or an optionally substituted C1 to C6 alkyl group, or R1 and R2, together with a nitrogen atom bound thereto and optionally another nitrogen atom or an oxygen atom, are combined to form a 5- to 6-membered heterocycle. Preferably, the compound is (2S,4S)-6-fluoro-2?,5?-dioxospiro[chroman-4,4?-imidazolidine]-2-carboxamide. The invention also provides a model animal with diabetic maculopathy produced by subjecting a diabetic animal to intraocular ischemia/reperfusion to express edema in a retinal visual cell layer or in a macula lutea.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: March 22, 2011
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Noriaki Kato, Hiroshi Nagano, Kaori Taniko, Takahito Jomori
  • Patent number: 7847063
    Abstract: The present invention provides a method for highly producing a recombinant protein in a plant storage organ and a GLP-1 derivative. The plant storage organ in which the recombinant protein is highly produced is obtained by transformation with the use of a vector which comprises a recombinant protein gene, a cytokinin-related gene, a drug-resistant gene and a removable DNA element, in which the cytokinin-related gene and the drug-resistant gene exist in the positions so that they can behave together with the DNA element, while the recombinant protein to be expressed in the plant storage organ exists in the position so that it would not behave together with the DNA element. The GLP-1 is produced by using the method, and a derivative having been stabilized against enzymatic digestion is further provided.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: December 7, 2010
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Koichi Sugita, Saori Kasahara, Hiroyasu Ebinuma, Fumio Takaiwa, Takahito Jomori, Yuji Hayashi, Akira Tashita, Yukari Kobara
  • Publication number: 20100305177
    Abstract: A prophylactic or therapeutic agent for diabeticmaculopathy, which can be administered for a long time and exhibits efficacy in a mechanism different from that of existing medicines. The invention relates to a prophylactic or therapeutic agent for diabetic maculopathy, comprising, as an active ingredient, a compound represented by the general formula: wherein X represents a halogen or a hydrogen atom, R1 and R2 concurrently or differently represent a hydrogen atom or an optionally substituted C1 to C6 alkyl group, or R1 and R2, together with a nitrogen atom bound thereto and optionally another nitrogen atom or an oxygen atom, are combined to form a 5- to 6-membered heterocycle. Preferably, the compound is (2S,4S)-6-fluoro-2?,5?-dioxospiro chroman-4,4?-imidazolidine]-2-carboxamide. The invention also provides a model animal with diabetic maculopathy produced by subjecting a diabetic animal to intraocular ischemia/reperfusion to express edema in a retinal visual cell layer or in a macula lutea.
    Type: Application
    Filed: July 23, 2010
    Publication date: December 2, 2010
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Noriaki KATO, Hiroshi Nagano, Kaori Taniko, Takahito Jomori
  • Patent number: 7811488
    Abstract: A method for manufacturing a molded article with at one or more cores uses compression molding apparatus that includes upper and lower punches that have a double structure comprising a central punch and an outer punch that surrounds the periphery of the central punch. The central punch and the outer punch are capable of independent sliding motions and compressing operations. Molding materials are supplied for a core and an outer layer respectively. The molding materials are compressed by the punches to form molded articles that include the core. The method may be executed in a rotary compression molding machine.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: October 12, 2010
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd
    Inventors: Yuichi Ozeki, Yoshiya Kondo, Yukinao Watanabe
  • Publication number: 20100216856
    Abstract: The present invention provides a protective agent for retinal nerve or optic nerve which exerts its effect through a different mechanism from that of conventional therapeutic agents and can be taken for long periods. The present invention is the protective agent for retinal nerve or optic nerve which comprises a compound with aldose reductase inhibiting activity such as the compound represented by the following general formula as an active ingredient. A preferable compound thereof is (2S,4S)-6-fluoro-2?,5?-dioxospiro[chroman-4,4?-imidazolidine]-2-carboxamide: wherein X represents a halogen atom or a hydrogen atom, R1 and R2 independently represent a hydrogen atom or an optionally substituted C1 to C6 alkyl group, or R1 and R2, together with a nitrogen atom bound thereto, or optionally another nitrogen atom or an oxygen atom, are combined to form a 5- to 6-membered heterocycle.
    Type: Application
    Filed: January 30, 2008
    Publication date: August 26, 2010
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Sookja Kim Chung, Stephen Chung, Chihiro Hibi
  • Patent number: 7713455
    Abstract: The present invention provides a method for manufacturing a molding with a core by using compression molding means having upper and lower double-structured punches; the method comprising the steps of supplying molding material for the core and molding material for the outer layer respectively, the step of compression-molding the molding material for the core and/or the molding material for the outer layer, and the step of compression-molding the whole molding with a core, wherein: the step of supplying the molding material for the outer layer posterior to the step of supplying the molding material for the core is performed until a tip of the lower center punch finally takes a position protruding from a tip of the lower outer punch; and the step of compression-molding the whole molding with a core is performed with the tips of the lower center punch and the lower outer punch aligned with each other.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: May 11, 2010
    Assignees: Sanwa Kagaku Kenkyusho Co., Ltd., Kikusui Seisakusho Ltd.
    Inventors: Yuichi Ozeki, Kentaro Izumi, Kenji Harada
  • Patent number: 7581941
    Abstract: This invention provides a punch comprising: a center punch and an outer punch surrounding the outer periphery of the center punch, both of which being slidable and capable of compressing; and relative position restriction means for restricting a relative position of the center and outer punches, the relative position restriction means being configured to restrict a first position in which a punch tip of the center punch is protruded from a punch tip of the outer punch and a second position in which the punch tip of the center punch is substantially coincident with the punch tip of the outer punch, and being configured to fail to restrict a third position in which the punch tip of the center punch is retracted in the punch tip of the outer punch, as well as a rotary compression molding machine provided with the double-structured punch.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: September 1, 2009
    Assignees: Kikusui Seisakusho Ltd., Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Kenji Harada, Fumiharu Ikai, Yuichi Ozeki
  • Publication number: 20090176841
    Abstract: An object of the present invention is to provide a medicament as a thyroid hormone receptor ligand which is sufficient in drug efficacy and safety, and has the excellent action as a drug. The present invention provides a compound represented by the following general formula (I) or a pharmaceutically acceptable salt thereof: [wherein [Chemical Formula 2] is a single bond or a double bond; A is —CH2— or —CO—; X, Y, and Z are each independently a nitrogen atom or a carbon atom; R1 is a hydrogen atom or an aralkyl group; R2 is an alkyl group or an aralkyl group, etc.; R3 is a hydrogen atom or an alkyl group, etc.; R4 is a hydrogen atom or an alkyl group; R5 is a hydrogen atom, an alkyl group or a halo lower alkyl group, etc.; R6 is a hydrogen atom or an alkyl group; R7 is a hydrogen atom, etc.; R8 is a hydrogen atom, or an alkyl group, etc.; and E is —NHCO-G-COR12, etc. (wherein G is a single bond or an alkylene group, and R12 is a hydroxy group or an alkoxy group)].
    Type: Application
    Filed: December 23, 2008
    Publication date: July 9, 2009
    Applicant: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Yukiyasu Asano, Koji Maeda, Nobuaki Tsuruta, Toru Murase
  • Publication number: 20090076105
    Abstract: The present invention provides a preventive or therapeutic agent for cerebral ischemic injury or cerebral ischemic reperfusion injury in stroke such as cerebral infarction and cerebral hemorrhage which exerts its effect through a different mechanism from that of conventional therapeutic agents and can be taken for along period. The present invention is a preventive or therapeutic agent for cerebral ischemic injury or cerebral ischemic reperfusion injury in stroke which contains 6-fluoro-2?,5?-dioxospiro[chroman-4,4?-imidazolidine]-2-carboxamide as an active ingredient. A particularly preferable compound is an optically resolved (2S,4S)-form of fidarestat.
    Type: Application
    Filed: August 20, 2008
    Publication date: March 19, 2009
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Sookja Kim CHUNG, Stephen CHUNG, Chihiro HIBI
  • Publication number: 20080255217
    Abstract: Disclosed herein is at least a method of preventing or treating cardiac dysfunction or myocardial injury caused by ischemia or ischemia reperfusion
    Type: Application
    Filed: August 21, 2007
    Publication date: October 16, 2008
    Applicants: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Chihiro Yabe, Kazumi Iwata
  • Publication number: 20080116606
    Abstract: The present invention provides a method for manufacturing a molding with a core by using compression molding means having upper and lower double-structured punches; the method comprising the steps of supplying molding material for the core and molding material for the outer layer respectively, the step of compression-molding the molding material for the core and/or the molding material for the outer layer, and the step of compression-molding the whole molding with a core, wherein: the step of supplying the molding material for the outer layer posterior to the step of supplying the molding material for the core is performed until a tip of the lower center punch finally takes a position protruding from a tip of the lower outer punch; and the step of compression-molding the whole molding with a core is performed with the tips of the lower center punch and the lower outer punch aligned with each other.
    Type: Application
    Filed: November 11, 2004
    Publication date: May 22, 2008
    Applicants: SANWA KAGAKU KENKYUSHO CO., LTD., KIKUSUI SEISAKUSHO LTD.
    Inventors: Yuichi Ozeki, Kentaro Izumi, Kenji Harada
  • Patent number: 7345180
    Abstract: A dipeptidyl peptidase IV inhibitor which is satisfactory in respect of activity, stability and safety and has an excellent action as a pharmaceutical agent. A compound represented by the following general formula or a pharmaceutically acceptable salt thereof: wherein R1 and R2 each represents hydrogen, an optionally substituted C1-6 alkyl group, or —COOR5 whereupon R5 represents hydrogen or an optionally substituted C1-6 alkyl group, or R1, R2, and a carbon atom together represent a 3- to 6-membered cycloalkyl group, R3 represents hydrogen or an optionally substituted C6-10 aryl group, R4represents a hydrogen or a cyano group, D represents —CONR6-, —CO— or —NR6CO—, R6 represents hydrogen or an optionally substituted C1-6 alkyl group, E represents —(CH2)m— whereupon m is 1 to 3, —CH2OCH2—, or —SCH2—, n is 0 to 3, and A represents an optionally substituted bicyclic heterocyclic group or bicyclic hydrocarbon group.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: March 18, 2008
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Takuji Kakigami, Mitsuru Oka, Noriyasu Katoh, Masahiro Yoshida, Masahiro Shirai, Toru Murase, Masao Sakairi, Takayo Murase, Mitsuaki Takeuchi, Yuji Hayashi, Motohiro Takeda, Mitsuhiro Makino
  • Publication number: 20070299119
    Abstract: A method for ameliorating severe diabetic retinopathy in a mammal comprising administering to the subject an effective amount of a compound represented by the following general formula: wherein X represents a halogen or a hydrogen atom, R1 and R2 concurrently or differently represent a hydrogen atom or an optionally substituted C1 to C6 alkyl group, or R1 and R2, together with a nitrogen atom bound thereto and optionally another nitrogen atom or an oxygen atom, are combined to form a 5- to 6-membered heterocycle.
    Type: Application
    Filed: February 18, 2005
    Publication date: December 27, 2007
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Akihiro Kakehashi, Yuka Saito, Kana Mori, Kuniharu Mizuno
  • Patent number: 7291594
    Abstract: A GLP-1 derivative is provided including an amino acid sequence of GLP-1 (7-35) having deletion, substitution and/or addition of one or more amino acids and having Waa-(Xaa)n-Yaa (in which Waa is Arg or Lys, Xaa is Arg or Lys, n is an integer of 0 to 14, and Yaa is Arg, Arg-NH2, Lys, Lys-NH2 or Hse) added to the C-terminus of the peptide having a GLP-1 activity. These derivatives are highly absorbable via a mucous membrane. The GLP-1 derivative can be conferred with resistance to dipeptidyl peptidase IV by substituting amino acid 8 in its GLP-1 amino acid sequence with Ser, or with resistance to trypsin by substituting amino acids 26 and 34 with Gln and Asn, respectively. The absorption efficiency of the GLP-1 derivatives via mucous membranes can be further improved by preparing a composition using a charge-regulated fat emulsion regulated to be negatively charged thereon.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: November 6, 2007
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Yuji Hayashi, Mitsuhiro Makino, Toshiyuki Kouzaki, Motohiro Takeda, Takahito Jomori
  • Patent number: 7156631
    Abstract: The present invention provides a rotary press that allows mass production of a molded product. The rotary press has upper and lower punches that may be split in to a plurality of split punches, a means for moving the split punches, and a means for manipulating the plurality of split punches. In addition, the rotary press also has a plurality of molding material supply-charging units for supplying and charging molding materials into the space formed by the tip portions of the split punches, a precompression molding unit and a main compression molding unit for compression-molding the molding materials supplied and charged the entire molded product, respectively. Optionally, a unit to remove residual molding material remaining on the lower punches and/or the temporary molded product may be provided.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: January 2, 2007
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventor: Yuichi Ozeki
  • Patent number: 7132072
    Abstract: To manufacture a multi-core press-coated molded product efficiently and in a single step from molding materials, namely, powder or granular particles, a punch has been devised that is characterized in that the punch, consists of a center punch whose tip portion is split into two or more parts, and an outer punch enclosing the outer perimeter of the center punch, and whose tip portion fills the gap at the tip portion of the center punch, with both the center and outer punches being slidable and manipulatable for compression operation the method of manufacturing a multi-core press-coated molded product using the punch of the invention as compression molding means for at least the upper punch and preferably for both the upper and lower punches, and a rotary compression molding machine therefore is also discribed.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: November 7, 2006
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Yuichi Ozeki, Yoshiya Kondo, Yukinao Watanabe