Patents by Inventor Shogo Ichihashi

Shogo Ichihashi 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).

  • Method for synthesis of halopyridyl-azacyclopentane derivative and intermediate thereof
    Patent number: 6384228
    Abstract: The present invention relates to a method for synthesis of an optically active halopyridyl-azacyclo-pentane derivative and the intermediate thereof which comprises preparing an optically active allene-1,3-dicarboxylic acid ester derivative from an optically active acetonedicarboxylic acid ester derivative and then proceeding through a 7-azabicyclo[2.2.1]heptane derivative to obtain the objective product.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: May 7, 2002
    Assignee: Nihon Medi-Physics Co., Ltd.
    Inventors: Manabu Node, Daisaku Nakamura, Toshio Fujiwara, Shogo Ichihashi
  • METHOD FOR SYNTHESIS OF HALOPYRIDYL-ACYCLOPENTANE DERIVATIVE AND INTERMEDIATE THEREOF
    Publication number: 20020010339
    Abstract: The present invention relates to a method for synthesis of an optically active halopyridyl-azacyclo-pentane derivative and the intermediate thereof which comprises preparing an optically active allene-1,3-dicarboxylic acid ester derivative from an optically active acetonedicarboxylic acid ester derivative and then proceeding through a 7-azabicyclo[2.2.1]heptane derivative to obtain the objective product.
    Type: Application
    Filed: January 7, 2000
    Publication date: January 24, 2002
    Inventors: MANABU NODE, DAISAKU NAKAMURA, TOSHIO FUJIWARA, SHOGO ICHIHASHI