Patents by Inventor Yujiro Hayashi

Yujiro Hayashi 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: 20130211139
    Abstract: The invention relates to a method of producing optically active ?-aminoaldehyde compound (3) by reacting imine compound (1-1) or sulfone compound (1-2) with aldehyde compound (2) in the presence of an optically active pyrrolidine compound. wherein each symbol is as defined in the specification.
    Type: Application
    Filed: October 19, 2011
    Publication date: August 15, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Yujiro Hayashi
  • Patent number: 8501980
    Abstract: Disclosed are a process suited to large scale synthesis with high yield for producing oseltamivir phosphate, in which a preparation of oseltamivir phosphate which is highly safe as a pharmaceutical product can be produced, and an intermediate compound for producing oseltamivir phosphate. In this production process, an intermediate compound represented by general formula (V) is synthesized by employing Michael reaction/Michael reaction/Horner-Wadsworth-Emmons reaction, and oseltamivir phosphate is produced by converting the substituent groups in this intermediate compound.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: August 6, 2013
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Yujiro Hayashi, Hayato Ishikawa
  • Publication number: 20130137880
    Abstract: The present invention provides a production method of optically active 3-substituted-3-formyl-2-hydroxypropanoic acid compound (4), which includes a step of reacting glyoxylic acid compound (1-1) or (1-2) with aldehyde (2) in the presence of optically active pyrrolidine compound (3); wherein each symbol is as defined in the specification.
    Type: Application
    Filed: May 30, 2011
    Publication date: May 30, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Yujiro Hayashi
  • Publication number: 20130005654
    Abstract: An object of the present invention is to provide a therapeutic agent for accelerating recovery to accelerate a return to normal physical conditions by administering to an animal not in good health and under medical treatment, a treatment method, and the like. There is provided a therapeutic agent for accelerating recovery for animal use to accelerate the improvement of a physical condition of an animal under medical treatment which has a decreased activity (vigor) and is exhausted, which contains ghrelin or a derivative thereof or a pharmaceutically acceptable salt thereof as an active ingredient and improves one or more of evaluation parameters consisting of activity (vigor), blood cell test values, biochemical test values, body temperature, the degree of anger or anxiety, and respiratory rate.
    Type: Application
    Filed: January 14, 2011
    Publication date: January 3, 2013
    Applicants: University of Miyazaki, Daiichi Sankyo Company, Limited, National Cerebral and Cardiovascular Center
    Inventors: Noboru Murakami, Keiko Nakahara, Kenji Kangawa, Yujiro Hayashi
  • Publication number: 20110082302
    Abstract: Disclosed are a process suited to large scale synthesis with high yield for producing oseltamivir phosphate, in which a preparation of oseltamivir phosphate which is highly safe as a pharmaceutical product can be produced, and an intermediate compound for producing oseltamivir phosphate. In this production process, an intermediate compound represented by general formula (V) is synthesized by employing Michael reaction/Michael reaction/Horner-Wadsworth-Emmons reaction, and oseltamivir phosphate is produced by converting the substituent groups in this intermediate compound.
    Type: Application
    Filed: May 28, 2009
    Publication date: April 7, 2011
    Inventors: Yujiro Hayashi, Hayato Ishikawa
  • Publication number: 20110039783
    Abstract: The present invention provides a novel peptide having a physiological activity. Because of having a hypotensive activity, this novel peptide is useful in treating a disease caused by hypertension. Also, an antibody to the novel peptide is provided.
    Type: Application
    Filed: June 27, 2008
    Publication date: February 17, 2011
    Applicant: DAIICHI SANKYO COMPANY LIMITED
    Inventors: Atsushi Okamoto, Koji Magota, Yujiro Hayashi
  • Publication number: 20100143310
    Abstract: The invention provides a spinal neuron damage treating agent for use in the treatment of spinal neuron damage, or an agent for promoting the proliferation of spinal neuronal precursor cells in the culture of spinal neuronal precursor cells, or an agent for promoting the regeneration of spinal nerves after transplantation of cultured spinal neuronal precursor cells, and the like. The invention provides an agent that contains a substance (e.g., ghrelin) that acts on the growth hormone secretagogue-receptor as an active ingredient, the agent being a spinal neuron damage treating agent for use in the treatment of spinal neuron damage, or an agent for promoting the proliferation of cultured spinal neuronal precursor cells in the culture of spinal neuronal precursor cells, or an agent for promoting the regeneration of spinal nerves after transplantation of cultured spinal neuronal precursor cells, and the like.
    Type: Application
    Filed: August 10, 2007
    Publication date: June 10, 2010
    Applicant: JAPAN AS REPRESENTED BY PRESIDENT OF NATIONAL CARDIOVASCULAR CENTER
    Inventors: Noboru Murakami, Keiko Nakahara, Miho Hashimoto, Yujiro Hayashi, Kenji Kangawa
  • Publication number: 20090305969
    Abstract: The present invention provides a novel therapeutic agent for skin injuries and a skin regeneration accelerator. The therapeutic agent for skin injuries and the skin regeneration accelerator containing desacyl ghrelin or a pharmaceutically acceptable salt thereof as an active ingredient.
    Type: Application
    Filed: November 21, 2006
    Publication date: December 10, 2009
    Inventors: Noboru Murakami, Keiko Nakahara, Kenji Kangawa, Yujiro Hayashi
  • Patent number: 7612213
    Abstract: A compound represented by the general formula (I): (I) wherein R represents linear, branched, or cyclic alkyl or aryl; a process for producing the compound; and an antitumor agent containing the compound as an active ingredient.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: November 3, 2009
    Assignee: Riken
    Inventors: Hiroyuki Osada, Hideaki Kakeya, Yujiro Hayashi
  • Publication number: 20090181888
    Abstract: The present invention provides a novel therapeutic agent for skin injuries and a skin regeneration accelerator. The therapeutic agent for skin injuries and the skin regeneration accelerator containing a substance acting on a growth hormone secretagogue receptor or a pharmaceutically acceptable salt thereof as an active ingredient.
    Type: Application
    Filed: November 21, 2006
    Publication date: July 16, 2009
    Inventors: Noboru Murakami, Keiko Nakahara, Kenji Kangawa, Yujiro Hayashi
  • Patent number: 7279601
    Abstract: The corresponding ?-aminooxy ketone is manufactured with a high yield and a high enantioselectivity. A manufacturing method for an optically active ?-aminooxy ketone derivative expressed by formula (1), wherein a ketone expressed by formula (2) is caused to react with a nitroso compound expressed by formula (3) in the presence of a proline derivative expressed by formula (4). In the formula, R1 and R2 respectively denote an alkyl, alkenyl or alkynyl group, and R1 and R2 may be linked to form a ring. R3 denotes an aryl, heterocyclic, alkyl, alkenyl or alkynyl group. A denotes a hydrogen atom, alkoxy group, aryloxy group, acyloxy group or silyloxy group which may have a substituent.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: October 9, 2007
    Assignee: Tokyo University of Science, Center for Science and Technology Exchange
    Inventors: Yujiro Hayashi, Mitsuru Shoji
  • Publication number: 20060293525
    Abstract: The corresponding ?-aminooxy ketone is manufactured with a high yield and a high enantioselectivity. A manufacturing method for an optically active ?-aminooxy ketone derivative expressed by formula (1), wherein a ketone expressed by formula (2) is caused to react with a nitroso compound expressed by formula (3) in the presence of a proline derivative expressed by formula (4). In the formula, R1 and R2 respectively denote an alkyl, alkenyl or alkynyl group, and R1 and R2 may be linked to form a ring. R3 denotes an aryl, heterocyclic, alkyl, alkenyl or alkynyl group. A denotes a hydrogen atom, alkoxy group, aryloxy group, acyloxy group or silyloxy group which may have a substituent.
    Type: Application
    Filed: August 20, 2004
    Publication date: December 28, 2006
    Inventors: Yujiro Hayashi, Mitsuru Shoji
  • Publication number: 20050209463
    Abstract: A compound represented by the general formula (I): (I) wherein R represents linear, branched, or cyclic alkyl or aryl; a process for producing the compound; and an antitumor agent containing the compound as an active ingredient.
    Type: Application
    Filed: June 6, 2003
    Publication date: September 22, 2005
    Applicant: RIKEN
    Inventors: Hiroyuki Osada, Hideaki Kakeya, Yujiro Hayashi
  • Publication number: 20040175776
    Abstract: There is provided a highly specific and highly sensitive assay method for platelet-activating factor (PAF). The invention may be employed to measure PAF levels in biological samples for elucidating the role of PAF in various pathological conditions. In addition, it is expected to facilitate diagnosis of various diseases associated with PAF fluctuation, and also contributing to evaluation of therapeutic effects on such diseases.
    Type: Application
    Filed: April 27, 2004
    Publication date: September 9, 2004
    Inventors: Yasushi Kanai, Yujiro Hayashi, Norio Ohnuma, Hiroshi Miyazaki
  • Patent number: 6424854
    Abstract: In order to give a physician easy access to a patient placed in an interjacent space within a vertical magnet apparatus of a vertical magnet-type MRI apparatus, support and movement mechanisms 19 are provided on respective opposing surface sides of a pair of vertical opposing magnets 11, for supporting a cradle 22 or a seat 32 of a chair on belts 18, and moving the cradle 22 or the seat 32 in the horizontal direction by motors 17 and in the vertical direction by hydraulic cylinders 13.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: July 23, 2002
    Assignee: GE Yokogawa Medical Systems, Limited
    Inventors: Yujiro Hayashi, Kazuhiko Hayakawa, Katsumasa Nose
  • Patent number: 6385481
    Abstract: The present invention is directed to joint motion imaging and provides a vertical magnet type MRI system comprising a vertical magnet unit (10) having a pair of opposite vertical magnets (11), a movable table (20) provided with wheels (22) for traveling and a cradle (21) to carry a specimen laid down thereon, and capable of being moved into and moved out of a space between the pair of opposite vertical magnets (11), table locking devices (13) for locking the movable table (20) with the cradle (21) being in place between the pair of opposite vertical magnets (11), a movable chair (30) provided with wheels (32) for traveling and capable of being moved into and moved out of the space between the pair of opposite vertical magnets (11), and a chair locking device (14) for locking the movable chair (30) in place between the pair of opposite vertical magnets (11).
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: May 7, 2002
    Assignee: GE Yokogawa Medical Systems, Limited
    Inventors: Katsumasa Nose, Osamu Furuta, Kazuhiko Hayakawa, Masaaki Sakuma, Yujiro Hayashi
  • Publication number: 20020013524
    Abstract: In order to give a physician easy access to a patient placed in an interjacent space within a vertical magnet apparatus of a vertical magnet-type MRI apparatus, support and movement mechanisms 19 are provided on respective opposing surface sides of a pair of vertical opposing magnets 11, for supporting a cradle 22 or a seat 32 of a chair on belts 18, and moving the cradle 22 or the seat 32 in the horizontal direction by motors 17 and in the vertical direction by hydraulic cylinders 13.
    Type: Application
    Filed: April 29, 1999
    Publication date: January 31, 2002
    Inventors: YUJIRO HAYASHI, KAZUHIKO HAYAKAWA, KATSUMASA NOSE
  • Publication number: 20010029330
    Abstract: The present invention is directed to joint motion imaging and provides a vertical magnet type MRI system comprising a vertical magnet unit (10) having a pair of opposite vertical magnets (11), a movable table (20) provided with wheels (22) for traveling and a cradle (21) to carry a specimen laid down thereon, and capable of being moved into and moved out of a space between the pair of opposite vertical magnets (11), table locking devices (13) for locking the movable table (20) with the cradle (21) being in place between the pair of opposite vertical magnets (11), a movable chair (30) provided with wheels (32) for traveling and capable of being moved into and moved out of the space between the pair of opposite vertical magnets (11), and a chair locking device (14) for locking the movable chair (30) in place between the pair of opposite vertical magnets (11).
    Type: Application
    Filed: December 22, 1998
    Publication date: October 11, 2001
    Inventors: KATSUMASA NOSE, OSAMU FURUTA, KAZUHIKO HAYAKAWA, MASAAKI SAKUMA, YUJIRO HAYASHI
  • Patent number: 6141580
    Abstract: In order not to nip the clothes or skin of a subject between the joining portions of coil members when a detecting coil for a magnetic resonance diagnostic apparatus is fitted around a region of the subject such as the leg or neck, the detecting coil 100 for a magnetic resonance diagnostic apparatus, which can be separated into an upper coil member 10 and a lower coil member 20 and has an annular shape when these members 10, 20 are integrally joined, is provided at the joining portions of the lower coil member 20 with guards 27, 28 of a silicone rubber having a hardness of Hs80.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: October 31, 2000
    Assignee: GE Yokogawa Medical Systems, Limited
    Inventors: Yujiro Hayashi, Masaaki Sakuma
  • Patent number: RE43038
    Abstract: A compound represented by the general formula (I): (I) wherein R represents linear, branched, or cyclic alkyl or aryl; a process for producing the compound; and an antitumor agent containing the compound as an active ingredient.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: December 20, 2011
    Assignee: Riken
    Inventors: Hiroyuki Osada, Hideaki Kakeya, Yujiro Hayashi