Patents by Inventor Kazuhiko Otoguro

Kazuhiko Otoguro 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: 10538521
    Abstract: The present invention provides a novel 2,4,6-substituted pyrimidine derivative, which is a compound represented by formula (I) (in the formula, ring A is a 6-membered heteroaryl group having at least one N atom optionally substituted with R1, R2, and R3; Z is an optionally substituted alkoxy group, an optionally substituted amino group, an optionally substituted heterocycloalkyl group, or an optionally substituted heteroaryl group; and R1, R2, and R3 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted alkoxy group, an optionally substituted cycloalkyloxy group, an optionally substituted heterocycloalkyloxy group, an optionally substituted phenoxy group, an optionally substituted amino group, a nitro group, and a hydroxy group) or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: January 21, 2020
    Assignees: CARNA BIOSCIENCES, INC., THE KITASATO INSTITUTE
    Inventors: Masaaki Sawa, Yuko Asamitsu, Yuko Uno, Satoshi Omura, Kazuhiko Otoguro, Masato Iwatsuki, Aki Ishiyama, Rei Hokari
  • Publication number: 20190345154
    Abstract: The present invention provides a novel 2,4,6-substituted pyrimidine derivative, which is a compound represented by formula (I) (in the formula, ring A is a 6-membered heteroaryl group having at least one N atom optionally substituted with R1, R2, and R3; Z is an optionally substituted alkoxy group, an optionally substituted amino group, an optionally substituted heterocycloalkyl group, or an optionally substituted heteroaryl group; and R1, R2, and R3 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted alkoxy group, an optionally substituted cycloalkyloxy group, an optionally substituted heterocycloalkyloxy group, an optionally substituted phenoxy group, an optionally substituted amino group, a nitro group, and a hydroxy group) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: October 25, 2017
    Publication date: November 14, 2019
    Applicants: CARNA BIOSCIENCES, INC., THE KITASATO INSTITUTE
    Inventors: Masaaki SAWA, Yuko ASAMITSU, Yuko UNO, Satoshi OMURA, Kazuhiko OTOGURO, Masato IWATSUKI, Aki ISHIYAMA, Rei HOKARI
  • Patent number: 9737558
    Abstract: The present invention provides a Peyer's patch activator containing a polysaccharide obtained from sugar cane as an active ingredient, wherein the polysaccharide contains ?-glucan as a main component and has a peak molecular weight within a range of 720,000 to 1,080,000, with a proportion of glucose in all component sugars being 80% or more, and proportions of nonreducing terminal glucose and ?-1,6-linked glucose being 20 to 30% and 15 to 25%, respectively.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: August 22, 2017
    Assignees: Mitsui Sugar Co., Ltd., The Kitasato Institute
    Inventors: Haruki Yamada, Hiroaki Kiyohara, Kazuhiko Otoguro, Aki Ishiyama, Masato Iwatsuki, Satoshi Omura, Masami Mizu, Toshikazu Kawai, Jun Kashimura, Kenji Koge
  • Publication number: 20150258131
    Abstract: The present invention provides a Peyer's patch activator containing a polysaccharide obtained from sugar cane as an active ingredient, wherein the polysaccharide contains ?-glucan as a main component and has a peak molecular weight within a range of 720,000 to 1,080,000, with a proportion of glucose in all component sugars being 80% or more, and proportions of nonreducing terminal glucose and ?-1,6-linked glucose being 20 to 30% and 15 to 25%, respectively.
    Type: Application
    Filed: September 18, 2013
    Publication date: September 17, 2015
    Applicants: The Kitakaso Institute, Mitsui Sugar Co., Ltd.
    Inventors: Haruki Yamada, Hiroaki Kiyohara, Kazuhiko Otoguro, Aki Ishiyama, Masato Iwatsuki, Satoshi Omura, Masami Mizu, Toshikazu Kawai, Jun Kashimura, Kenji Koge
  • Patent number: 9000194
    Abstract: The present invention addresses the problem of providing an anti-trypanosomal drug having a novel skeleton, in order to solve issues that occur with conventional technologies. The present invention is based on the discovery of a microbe that produces an anti-trypanosomal drug having a novel skeleton. Specifically, this invention provides: a compound indicated by formula (I) having a trypanosomal inhibitory activity; an analog thereof; a production method therefor; and a Lechevalieria sp. K10-0216 strain that produces said compound.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: April 7, 2015
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Yoko Takahashi, Takuji Nakashima, Kazuhiko Otoguro, Kazuro Shiomi, Masato Iwatsuki, Atsuko Matsumoto
  • Publication number: 20140206889
    Abstract: [Problem] The present invention addresses the problem of providing an anti-trypanosomal drug having a novel skeleton, in order to solve issues that occur with conventional technologies. [Solution] The present invention is based on the discovery of a microbe that produces an anti-trypanosomal drug having a novel skeleton. Specifically, this invention provides: a compound indicated by formula (I) having a trypanosomal inhibitory activity; an analog thereof; a production method therefor; and a Lechevalieria sp. Kl0-0216 strain that produces said compound.
    Type: Application
    Filed: August 31, 2012
    Publication date: July 24, 2014
    Applicant: THE KITASATO INSTITUTE
    Inventors: Satoshi Omura, Yoko Takahashi, Takuji Nakashima, Kazuhiko Otoguro, Kazuro Shiomi, Masato Iwatsuki, Atsuko Matsumoto
  • Patent number: 6093402
    Abstract: Citrus amanatsudaidai peel extract, which was used as a starting materials was purified over various kinds of column chromatography (activated carbon, Amberlite IR-120B [H.sup.+ ], cellulose, Sephadex G25 and HPLC) to isolate a peptide as a white powder. This peptide is a water-soluble neutral substance and shows positive reactions to ninhydrin and sodium nitroprusside and negative reactions to anisaldehyde, phenolsulfuric acid and Dragendorff reagent. Amino acids constituting the peptide of the present invention contain aspartic acid and oxylysine in large amounts. Hair growers containing the peptide of the present invention were successful in promoting 150% proliferation of rabbit hair papilla cells when applied in a concentration of 1.4 .mu.g/ml.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: July 25, 2000
    Assignee: Yutaka Miyauchi
    Inventors: Yutaka Miyauchi, Shigeo Hasegawa, Kazuhiko Otoguro, Kanki Komiyama