Patents by Inventor Hirotaka Kawanami

Hirotaka Kawanami 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: 20160130193
    Abstract: A method for stereoselectively producing an optically active alcohol compound. The optically active alcohol compound of Formula (8) can be produced in high yield and high selectivity from the compound of Formula (3), and the production method that is useful industrially and the intermediates therefor can be provided. In formulae, R1 is a hydrogen atom, C1-6 alkyl, C1-6 alkyl optionally substituted with R3, or the like, R2 is cyano or —CH2N(R5)R4, and R3 is C3-8 cycloalkyl.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 12, 2016
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Hirotaka KAWANAMI, Yukihiro NISHINO, Shota MURASE
  • Patent number: 9018403
    Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2 may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: April 28, 2015
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Hirotaka Kawanami, Kana Yamaguchi, Shota Murase
  • Publication number: 20140256921
    Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2 may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.
    Type: Application
    Filed: May 20, 2014
    Publication date: September 11, 2014
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Hirotaka KAWANAMI, Kana YAMAGUCHI, Shota MURASE
  • Patent number: 8765974
    Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: July 1, 2014
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Hirotaka Kawanami, Kana Yamaguchi, Shota Murase
  • Patent number: 8476470
    Abstract: The present invention herein provides a process for production of a bicyclo[2.2.2]octylamine derivative which may be used as an intermediate for preparation of medical and pharmaceutical products. The process is quite efficient and can produce the derivative in a large-scale while using mild reaction conditions. The process for producing a bicyclo[2.2.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: July 2, 2013
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Tomohiro Akeboshi, Yusuke Iriyama, Hirotaka Kawanami
  • Publication number: 20120046476
    Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.
    Type: Application
    Filed: April 14, 2010
    Publication date: February 23, 2012
    Inventors: Hirotaka Kawanami, Kana Yamaguchi, Shota Murase
  • Publication number: 20110137070
    Abstract: The present invention herein provides a process for production of a bicyclo[2.2.2]octylamine derivative which may be used as an intermediate for preparation of medical and pharmaceutical products. The process is quite efficient and can produce the derivative in a large-scale while using mild reaction conditions. The process for producing a bicyclo[2.2.
    Type: Application
    Filed: August 7, 2009
    Publication date: June 9, 2011
    Inventors: Tomohiro Akeboshi, Yusuke Iriyama, Hirotaka Kawanami