Patents by Inventor Syoichi Tateyama

Syoichi Tateyama 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 producing 6-hydroxyethylpenam compound
    Patent number: 8293893
    Abstract: The present invention provides a method by which a 6-hydroxyethyl penam compound represented by General Formula (2) below can be produced with a high selectivity: wherein R represents a hydrogen atom or a protective group for carboxylic acid and X2 represents a halogen atom; the method including the steps of reacting a Grignard reagent with a halogeno penam compound represented by General Formula (1) below: wherein R and X2 are the same as above, and X1 represents a halogen atom; reacting the generated compound with an amine compound; and further reacting the generated compound with acetaldehyde.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: October 23, 2012
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Hideo Tanaka, Manabu Kuroboshi, Syoichi Tateyama, Takae Yamada, Yutaka Kameyama
  • METHOD FOR PRODUCING 6-HYDROXYETHYLPENAM COMPOUND
    Publication number: 20100113769
    Abstract: The present invention provides a method by which a 6-hydroxyethyl penam compound represented by General Formula (2) below can be produced with a high selectivity: wherein R represents a hydrogen atom or a protective group for carboxylic acid and X2 represents a halogen atom; the method including the steps of reacting a Grignard reagent with a halogeno penam compound represented by General Formula (1) below: wherein R and X2 are the same as above, and X1 represents a halogen atom; reacting the generated compound with an amine compound; and further reacting the generated compound with acetaldehyde.
    Type: Application
    Filed: March 6, 2008
    Publication date: May 6, 2010
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Hideo Tanaka, Manabu Kuroboshi, Syoichi Tateyama, Takae Yamada, Yutaka Kameyama