Patents by Inventor Kyoko Maruyama

Kyoko Maruyama 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).

  • Selective process for producing an anomer of a 1-phosphorylated saccharide derivative and process for producing a nucleoside
    Publication number: 20060094869
    Abstract: A desired isomer is selectively prepared by phosphorolyzing and isomerizing an anomer mixture of a 1-phosphorylated saccharide derivative while crystallizing one of the isomers to displace the equilibrium. Furthermore, using the action of a nucleoside phosphorylase, a nucleoside is prepared from the 1-phosphorylated saccharide derivative obtained and a base with improved stereoselectivity and a higher yield. This process is an anomer-selective process for preparing a 1-phosphorylated saccharide derivative and a nucleoside.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 4, 2006
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hironori Komatsu, Hirokazu Awano, Nobuyuki Fukazawa, Kiyoshi Ito, Ichirou Ikeda, Tadashi Araki, Takeshi Nakamura, Tamotsu Asano, Junya Fujiwara, Tomoyuki Ando, Katsutoshi Tsuchiya, Kyoko Maruyama, Hideki Umetani, Takahiro Yamauchi, Hitoki Miyake
  • Process for selectively producing 1-phosphorylated sugar derivative anomer and process for producing nucleoside
    Patent number: 7038039
    Abstract: A desired isomer is selectively prepared by phosphorolyzing and isomerizing an anomer mixture of a 1-phosphorylated saccharide derivative while crystallizing one of the isomers to displace the equilibrium. Furthermore, using the action of a nucleoside phosphorylase, a nucleoside is prepared from the 1-phosphorylated saccharide derivative obtained and a base with improved stereoselectivity and a higher yield. This process is an anomer-selective process for preparing a 1-phosphorylated saccharide derivative and a nucleoside.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: May 2, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hironori Komatsu, Hirokazu Awano, Nobuyuki Fukazawa, Kiyoshi Ito, Ichirou Ikeda, Tadashi Araki, Takeshi Nakamura, Tamotsu Asano, Junya Fujiwara, Tomoyuki Ando, Katsutoshi Tsuchiya, Kyoko Maruyama, Hideki Umetani, Takahiro Yamauchi, Hitoki Miyake
  • Process for selectively producing 1-phosphorylated sugar derivative anomer and process for producing nucleoside
    Publication number: 20020193314
    Abstract: A desired isomer is selectively prepared by phosphorolyzing and isomerizing an anomer mixture of a 1-phosphorylated saccharide derivative while crystallizing one of the isomers to displace the equilibrium. Furthermore, using the action of a nucleoside phosphorylase, a nucleoside is prepared from the 1-phosphorylated saccharide derivative obtained and a base with improved stereoselectivity and a higher yield. This process is an anomer-selective process for preparing a 1-phosphorylated saccharide derivative and a nucleoside.
    Type: Application
    Filed: May 7, 2002
    Publication date: December 19, 2002
    Inventors: Hironori Komatsu, Hirokazu Awano, Nobuyuki Fukazawa, Kiyoshi Ito, Ichirou Ikeda, Tadashi Araki, Takeshi Nakamura, Tamotsu Asano, Junya Fujiwara, Tomoyuki Ando, Katsutoshi Tsuchiya, Kyoko Maruyama, Hideki Umetani, Takahiro Yamauchi, Hitoki Miyake