Patents by Inventor Kazuaki Kanno

Kazuaki Kanno 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).

  • Production method of imidazole derivatives
    Patent number: 10005780
    Abstract: The present invention provides an advantageous production method of an imidazole derivative, which is suitable for industrial production. Compound (VI) is produced by reacting compound (I) with a Grignard reagent or a magnesium reagent, and a lithium reagent, and then reacting the resulting compound with compound (V).
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 26, 2018
    Assignee: Takeda Pharmaceutical Company
    Inventors: Yoichi Kawabata, Yasuhiro Sawai, Kazuaki Kanno, Naotaka Sawada
  • PRODUCTION METHOD OF IMIDAZOLE DERIVATIVES
    Publication number: 20160244454
    Abstract: The present invention provides an advantageous production method of an imidazole derivative, which is suitable for industrial production. Compound (VI) is produced by reacting compound (I) with a Grignard reagent or a magnesium reagent, and a lithium reagent, and then reacting the resulting compound with compound (V).
    Type: Application
    Filed: January 21, 2016
    Publication date: August 25, 2016
    Inventors: Yoichi Kawabata, Yasuhiro Sawai, Kazuaki Kanno, Naotaka Sawada
  • Production method of imidazole derivatives
    Patent number: 9278938
    Abstract: The present invention provides an advantageous production method of an imidazole derivative, which is suitable for industrial production. Compound (VI) is produced by reacting compound (I) with a Grignard reagent or a magnesium reagent, and a lithium reagent, and then reacting the resulting compound with compound (V).
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 8, 2016
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yoichi Kawabata, Yasuhiro Sawai, Kazuaki Kanno, Naotaka Sawada
  • PRODUCTION METHOD OF IMIDAZOLE DERIVATIVES
    Publication number: 20140100373
    Abstract: The present invention provides an advantageous production method of an imidazole derivative, which is suitable for industrial production. Compound (VI) is produced by reacting compound (I) with a Grignard reagent or a magnesium reagent, and a lithium reagent, and then reacting the resulting compound with compound (V).
    Type: Application
    Filed: June 14, 2012
    Publication date: April 10, 2014
    Applicant: TAKEDA PHARMACEUTICAL COMPANY LIMITED
    Inventors: Yoichi Kawabata, Yasuhiro Sawai, Kazuaki Kanno, Naotaka Sawada
  • Process for producing bisphenol compound
    Patent number: 8445731
    Abstract: Provided is a process for producing a bisphenol compound stably at a high conversion and with high selectivity over a long period. A process for producing a bisphenol compound by feeding a phenol compound and a carbonyl compound continuously to a reactor packed with an acid catalyst, characterized in that the acid catalyst is a sulfonic-acid-form cation-exchange resin in which part of the sulfo groups have been modified with at least any one of 2-pyridylalkanethiol compounds and 3-pyridylalkanethiol compounds.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: May 21, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Susumu Tsutsuminai, Kazuaki Kanno, Makiko Tachikura
  • PROCESS FOR PRODUCING BISPHENOL COMPOUND
    Publication number: 20120010434
    Abstract: Provided is a process for producing a bisphenol compound stably at a high conversion and with high selectivity over a long period. A process for producing a bisphenol compound by feeding a phenol compound and a carbonyl compound continuously to a reactor packed with an acid catalyst, characterized in that the acid catalyst is a sulfonic-acid-form cation-exchange resin in which part of the sulfo groups have been modified with at least any one of 2-pyridylalkanethiol compounds and 3-pyridylalkanethiol compounds.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 12, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Susumu Tsutsuminai, Kazuaki Kanno, Makiko Tachikura
  • 3-Hydroxy-3-(2-thienyl) propionamides and production method thereof, and production method of 3-amino-1-(2-thienyl)-1-propanols using the same
    Patent number: 7659409
    Abstract: The object of the present invention is to provide 3-hydroxy-3-(2-thienyl)propionamides useful as synthesis intermediates of pharmaceutical preparations and the like and a method for obtaining optically active 3-amino-1-(2-thienyl)-1-propanols using the same with high reaction yield, high optical yield and industrially low cost. According to the present invention, 3-amino-1-(2-thienyl)-1-propanols are obtained by carrying out asymmetric reduction of a ?-ketocarbonyl compound having thiophene ring in the presence of a catalyst constituted from a compound of a group VIII or IX metal in the periodic table (e.g., a ruthenium compound) and an asymmetric ligand represented by a specified optically active diamine derivative (e.g., a diphenylethylenediamine derivative), or using a cell, a treated product of said cell or the like of a microorganism, and as occasion demands, carrying out amidation of the ester group and then carrying out reduction of the amido group.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: February 9, 2010
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Jun Takehara, Jingping Qu, Kazuaki Kanno, Hiroshi Kawabata, Yasumasa Dekishima, Makoto Ueda, Kyoko Endo, Takeshi Murakami, Tomoko Sasaki, Hisatoshi Uehara, Youichi Matsumoto, Shihomi Suzuki
  • 3-Hydroxy-3-(2-thienyl) propionamides and production method thereof, and production method of 3-amino-1-(2-thienyl)-1-propanols using the same
    Publication number: 20050107621
    Abstract: The object of the present invention is to provide 3-hydroxy-3-(2-thienyl)propionamides useful as synthesis intermediates of pharmaceutical preparations and the like and a method for obtaining optically active 3-amino-1-(2-thienyl)-1-propanols using the same with high reaction yield, high optical yield and industrially low cost. According to the present invention, 3-amino-1-(2-thienyl)-1-propanols are obtained by carrying out asymmetric reduction of a ?-ketocarbonyl compound having thiophene ring in the presence of a catalyst constituted from a compound of a group VIII or IX metal in the periodic table (e.g., a ruthenium compound) and an asymmetric ligand represented by a specified optically active diamine derivative (e.g., a diphenylethylenediamine derivative), or using a cell, a treated product of said cell or the like of a microorganism, and as occasion demands, carrying out amidation of the ester group and then carrying out reduction of the amido group.
    Type: Application
    Filed: September 20, 2004
    Publication date: May 19, 2005
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Jun Takehara, Jingping Qu, Kazuaki Kanno, Hiroshi Kawabata, Yasumasa Dekishima, Makoto Ueda, Kyoko Endo, Takeshi Murakami, Tomoko Sasaki, Hisatoshi Uehara, Youichi Matsumoto, Shihomi Suzuki
  • Process for producing 1H-3-aminopyrrolidine and derivatives thereof
    Patent number: 6531594
    Abstract: A process for producing 1H-3-aminopyrrolidine and derivatives thereof is disclosed.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: March 11, 2003
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Michi Watanabe, Takeshi Nakato, Jun Takehara, Kazuaki Kanno, Shuji Ichikawa
  • Process for producing 1H-3-aminopyrrolidine and derivatives thereof
    Publication number: 20020042523
    Abstract: A process for producing 1H-3-aminopyrrolidine and derivatives thereof is disclosed.
    Type: Application
    Filed: August 21, 2001
    Publication date: April 11, 2002
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Michi Watanabe, Takeshi Nakato, Jun Takehara, Kazuaki Kanno, Syuji Ichikawa