Patents by Inventor Hirotaka Shinoda

Hirotaka Shinoda 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).

  • Certain 2,6-dimethyl-4-(pyrazolo[1,5a]-pyridin-3-yl)1,4-dihydro-pyridine-3,5-dic arboxylate derivatives and compositions containing same
    Patent number: 4923871
    Abstract: This invention relates to new and useful 2,6-dimethyl-4-(pyrazolo[1,5-a]pyridin-3-yl)-1,4-dihydropyridine-3,5-dicar boxylate derivatives of the following formula: ##STR1## and pharmaceutically acceptable salts thereof, having potent promoting activity of some antitumor agents against various kinds of tumor cells including multiple drug resistant tumor cells.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: May 8, 1990
    Assignees: Kyorin Seiyaku Kabushiki Kaisha, Japanese Foundation for Cancer Research
    Inventors: Makoto Inaba, Hirotaka Shinoda, Fujio Iinuma
  • Imidazo [1,5-a]pyrimidine derivatives and process for their preparation
    Patent number: 4914104
    Abstract: This invention relates to a novel imidazo[1,5-a]pyrimidine derivatives and process for their preparation.Moreover, it relates to novel imidazo[1,5-a]pyrimidine derivatives and salts thereof having antifungal activities, and process for their preparation.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: April 3, 1990
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Tsutomu Irikura, Seigo Suzue, Hiroaki Uchida, Hirotaka Shinoda, Satoshi Murayama, Susumu Kinoshita
  • Imidazo(1,5-a)pyrimidine derivatives and their use as antimycotic agents
    Patent number: 4649198
    Abstract: Imidazo [1,5-a] pyrimidine derivatives of the formula (I) exhibit antifungal properties: ##STR1## wherein X.sub.1 and X.sub.2 are selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxy group, an amino or substituted amino group, an alkoxy group, an alkylthio group, an alkylsulfinyl group and an alkylsulfonyl group; R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group and an aralkyl group.Compound (I) are prepared by reacting the corresponding .alpha.-acylamino-alkylpyrimidines with condensing agents to form chlorine-substituted imidazo [1,5-a] pyrimidines, then replacing one or both chlorine atoms in the pyrimidine ring with other substituents, if necessary.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: March 10, 1987
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Tsutomu Irikura, Seigo Suzue, Hiroaki Uchida, Hirotaka Shinoda, Satoshi Murayama, Susumu Kinoshita