Patents Assigned to Seikagaku Kogyo Kabushiki Kaisha
  • Publication number: 20120197015
    Abstract: The present invention is directed to providing epoxycarboxamide compounds, azide compounds and amino alcohol compounds which serve as manufacturing intermediates that can lead to useful ?-ketoamide compounds, and the present invention is also is directed to processes for preparing ?-ketoamide compounds using the intermediates. The epoxycarboxamide compounds, azide compounds and amino alcohol compounds are represented by the following formulae: wherein R1, R2, R3, R4 and R5, as well as subvariables for one or more of R1, R2, R3, R4 and R5 are as defined herein.
    Type: Application
    Filed: December 14, 2011
    Publication date: August 2, 2012
    Applicant: Seikagaku Kogyo Kabushiki Kaisha d/b/a Seikagaku Corporation
    Inventors: Nobuo KOBAYASHI, Tsuneo Koji, Takashi Fujita, Tomofumi Nishimura, Akihiko Hosoda
  • Patent number: 8202705
    Abstract: A sialyltransferase having the following physico-chemical properties: (1) Activity: transfers sialic acid from a sialic acid donor selectively to a 3-hydroxyl group of a galactose residue contained in lactosylceramide as a sialic acid acceptor to produce ganglioside GM3; (2) Optimal Reaction pH: 6.0 to 7.0; and (3) Inhibition and Activation: the activity increases at least 1.5 times with 10 mM of Mn2+ as compared with the case in the absence thereof.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: June 19, 2012
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventor: Masaki Saito
  • Patent number: 8163943
    Abstract: The present invention is to provide manufacturing intermediates which can be led to useful ?-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide epoxycarboxamide compounds, azide compounds and amino alcohol compounds represented by the following formulae: wherein R1 and R2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R3 represents alkyl group, alkenyl group, aromatic hydrocarbon group, heterocyclic group, R6—O— or R7—N(R8)—; where R6 represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R7 and R8 each represents hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group, and, R4 and R5 represent the same groups as R7 and R8, respectively, and R4 and R5 optionally form a ring together; and X represents —O— or —N(R9)—, where R9 represents hydrogen atom or alkyl group, and X optionally forms a ring together with R4 or R5, and
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 24, 2012
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Nobuo Kobayashi, Tsuneo Koji, Takashi Fujita, Tomofumi Nishimura, Akihiko Hosoda
  • Publication number: 20090305357
    Abstract: A chondroitin polymerase having such properties that it transfers GlcUA and GalNAc alternately to a non-reduced terminal of a sugar chain from a GlcUA donor and a GalNAc donor, respectively, and the like; and a process for producing the chondroitin polymerase.
    Type: Application
    Filed: August 10, 2009
    Publication date: December 10, 2009
    Applicant: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Toshio NINOMIYA, Nobuo Sugiura, Koji Kimata
  • Patent number: 7470529
    Abstract: A human-derived novel chondroitin synthase, which is an enzyme for synthesizing a fundamental backbone of chondroitin and has both glucuronic acid transferring activity and N-acetylgalactosamine transferring activity.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: December 30, 2008
    Assignees: Seikagaku Kogyo Kabushiki Kaisha, National Institute of Advanced Industrial Science and Technology
    Inventors: Hisashi Narimatsu, Koji Kimata, Toshikazu Yada, Takashi Sato, Masanori Goto
  • Publication number: 20080318293
    Abstract: A galactosamine derivative represented by the following formula (1): wherein R1, R2 and R5 each independently represents SO3? or H, and at least one of them represents SO3?; R3 represents H, acetyl or SO3?; R4 represents H, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; X represents O, S, NH or CH2; and represents an ? bond or a ? bond, and a sulfotransferase inhibitor comprising the derivative.
    Type: Application
    Filed: August 19, 2008
    Publication date: December 25, 2008
    Applicant: SEIKAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Osami HABUCHI, Hirofumi Nakano, Toshihiko Sawada, Sonoko Fujii, Shiori Ohtake
  • Patent number: 7354910
    Abstract: An agent for treating inflammatory bowel diseases and an agent for preventing or improving symptoms accompanied by inflammatory bowel diseases, which each comprises hyaluronic acid or a pharmaceutically acceptable salt thereof as an active ingredient.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: April 8, 2008
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventor: Toru Kono
  • Publication number: 20080064873
    Abstract: The present invention is to provide manufacturing intermediates which can be led to useful ?-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide epoxycarboxamide compounds, azide compounds and amino alcohol compounds represented by the following formulae: wherein R1 and R2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R3 represents alkyl group, alkenyl group, aromatic hydrocarbon group, heterocyclic group, R6—O— or R7—N(R8)—; where R6 represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R7 and R8 each represents hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group, and, R4 and R5 represent the same groups as R7 and R8, respectively, and R4 and R5 optionally form a ring together; and X represents —O— or —N(R9)—, where R9 represents hydrogen atom or alkyl group, and X optionally forms a ring together with R4 or R5, and
    Type: Application
    Filed: October 31, 2007
    Publication date: March 13, 2008
    Applicant: Seikagaku Kogyo Kabushiki Kaisha d/b/a Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Tsuneo Koji, Takashi Fujita, Tomofumi Nishimura, Akihiko Hosoda
  • Publication number: 20080058516
    Abstract: The present invention is to provide manufacturing intermediates which can be led to useful ?-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide epoxycarboxamide compounds, azide compounds and amino alcohol compounds represented by the following formulae: wherein R1 and R2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R3 represents alkyl group, alkenyl group, aromatic hydrocarbon group, heterocyclic group, R6—O— or R7—N(R8)—; where R6 represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R7 and R8 each represents hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group, and, R4 and R5 represent the same groups as R7 and R8, respectively, and R4 and R5 optionally form a ring together; and X represents —O— or —N(R9)—, where R9 represents hydrogen atom or alkyl group, and X optionally forms a ring together with R4 or R5, and
    Type: Application
    Filed: October 30, 2007
    Publication date: March 6, 2008
    Applicant: Seikagaku Kogyo Kabushiki Kaisha d/b/a Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Tsuneo Koji, Takashi Fujita, Tomofumi Nishimura, Akihiko Hosoda
  • Patent number: 7335515
    Abstract: A (1?3)-?-D-glucan binding protein, a fluorescence-labeled (1?3)-?-D-glucan binding domain protein, a (1?3)-?-D-glucan measuring agent comprising the same, a method for measuring (1?3)-?-D-glucan using the same, and a (1?3)-?-D-glucan assay kit comprising the same.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: February 26, 2008
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Tamura, Masayuki Tanaka, Tatsushi Muta
  • Patent number: 7333847
    Abstract: Provided are a method for evaluation of tissue adhesion level which comprises relating the detection result of gadolinium from MRI image, on which a cross-section of a “boundary surface between a first tissue and a second tissue” of an animal administered with gadolinium has been imaged, to the adhesion level between the first tissue and the second tissue; and a detecting agent of tissue adhesion level. The detecting method of the present invention and detecting agent of the present invention are markedly useful, because they make it possible to detect the adhesion level, which is otherwise difficult to detect from the outside of the body, conveniently, speedily and precisely.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: February 19, 2008
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: David Amiel, Richard David Coutts, Robert M. Healey
  • Patent number: 7326799
    Abstract: The present invention is to provide manufacturing intermediates which can be led to useful ?-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide epoxycarboxamide compounds, azide compounds and amino alcohol compounds represented by the following formulae: wherein R1 and R2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R3 represents alkyl group, alkenyl group, aromatic hydrocarbon group, heterocyclic group, R6—O— or R7—N(R8)—; where R6 represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R7 and R8 each represents hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group, and, R4 and R5 represent the same groups as R7 and R8, respectively, and R4 and R5 optionally form a ring together; and X represents —O— or —N(R9)—, where R9 represents hydrogen atom or alkyl group, and X optionally forms a ring together with R4 or R5, and
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: February 5, 2008
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Nobuo Kobayashi, Tsuneo Koji, Takashi Fujita, Tomofumi Nishimura, Akihiko Hosoda
  • Patent number: 7273729
    Abstract: A human-derived novel chondroitin synthase, which is an enzyme for synthesizing a fundamental backbone of chondroitin and has both glucuronic acid transferase activity and N-acetylgalactosamine transferase activity.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: September 25, 2007
    Assignees: Seikagaku Kogyo Kabushiki Kaisha, National Institute of Advanced Industrial Science and Technology
    Inventors: Hisashi Narimatsu, Koji Kimata, Toshikazu Yada, Takashi Sato, Masanori Goto
  • Patent number: 7256278
    Abstract: A sialyltransferase having the following physico-chemical properties; (1) Activity: transfers sialic acid from a sialic acid donor selectively to a 3-hydroxyl group of a galactose residue contained in lactosylceramide as a sialic acid acceptor to produce ganglioside GM3; (2) Optimal reaction pH: 6.0 to 7.0; and (3) Inhibition and activation: the activity increases at least 1.5 times with 10 mm of Mn2+ as compared with the case in the absence thereof.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: August 14, 2007
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventor: Masaki Saito
  • Patent number: 7232676
    Abstract: A human-derived novel chondroitin synthase, which is an enzyme for synthesizing a fundamental backbone of chondroitin and has both glucuronic acid transferring activity and N-acetylgalactosamine transferring activity.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: June 19, 2007
    Assignees: Seikagaku Kogyo Kabushiki Kaisha, National Institute of Advanced Industrial Science and Technology
    Inventors: Hisashi Narimatsu, Koji Kimata, Toshikazu Yada, Takashi Sato, Masanori Goto
  • Patent number: 6555371
    Abstract: A sialyltransferase having the following physico-chemical properties: (1) Activity: transfers sialic acid from a sialic acid donor selectively to a 3-hydroxyl group of a galactose residue contained in lactosylceramide as a sialic acid acceptor to produce ganglioside GM3; (2) Optimal reaction pH: 6.0 to 7.0; and (3) Inhibition and activation: the activity increases at least 1.5 times with 10 mM of Mn2+ as compared with the case in the absence thereof.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 29, 2003
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventor: Masaki Saito
  • Patent number: 6335444
    Abstract: A process for preparing a 2-acylamino alcohol derivative which comprises (A) reacting an aminopropanol derivative represented by the following formula (1): Y—CH2—C*H (NHP1)—C*H(OH)—R1   (1) with an amine represented by R2H to synthesize an amino alcohol derivative represented by the following formula (2): R2—CH2—C*H(NHP1)—C*H(OH)—R1   (2) (B) leaving P1 from said amino alcohol derivative represented by formula (2) to synthesize an amino alcohol derivative represented by the following formula (3): R2—CH2—C*H(NH2)—C*H(OH)—R1   (3) (C) reacting said amino alcohol derivative represented by formula (3) with a carboxylic acid represented by R11COOH or a reactive derivative thereof to prepare a 2-acylamino alcohol derivative represented by the following formula (4): R2—CH2—C*H(NHCOR11)—C*H(OH)—R1   (4 ) wherein * represents an asymmetric carbon atom, and P1, R1, R2 and R
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 1, 2002
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Masayuki Jinbo, Hidekazu Oyamada, Jinichi Inokuchi
  • Patent number: 6245897
    Abstract: A monoclonal antibody which recognizes lipopolysaccharide binding site of macrophage cell surface receptor CD14 and has binding activity to monocyte or macrophage cells. The monoclonal antibody suppresses the production of an inflammatory mediator such as TNF, IL-6 or NO at early stages by recognizing CD14, and competitively inhibiting its binding with LPS. Therefore, it is useful for pathology analysis and the treatment of sepsis.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: June 12, 2001
    Assignee: Seikagaku Kogyo Kabushiki Kaisha (Seikagaku Corporation)
    Inventors: Yoshiyuki Adachi, Naohito Ohno, Toshiro Yadomae
  • Patent number: 6228998
    Abstract: A glycosaminoglycan derivative is disclosed wherein a first amino group of a spacer compound (NH2—Y—NH2) is bonded to an aldehyde formed by reducing and partially oxidizing a reducing end sugar of a glycosaminoglycan, via an aminoalkyl bond, or a lactone formed by oxidizing and cyclodehydrating the reducing end sugar of a glycosaminoglycan, via an acid amide bond, and further a hydrocarbon compound having a allyl group at one end and a functional group at another end which is bonded to the second amino group of the spacer compound. This derivative is useful as a substrate in a process for identifying a glycosaminoglycan-degrading enzyme that gives good reproducibility and sensitivity.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: May 8, 2001
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Ryu Miura, Sadako Yamagata, Tatsuya Yamagata
  • Patent number: D827814
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: September 4, 2018
    Assignee: SEIKAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Atsushi Sekine, Ataru Ide, Tadashi Komuro, Teruyuki Iwama