Patents by Inventor Yasunori Funabashi

Yasunori Funabashi 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).

  • 15-hydroxy 6,9-hemiacetal erythromycin compounds
    Patent number: 5854407
    Abstract: Disclosed are (1) a structurally novel 6,9-hemiacetal- erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions br a salt thereof, which has an excellent gastrointestinal function promoting effect and is low in toxicity; (2) a process for preparing a 6,9-hemiacetal-erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions or a salt thereof, which comprises reacting a 6,9-hemiacetal-erythromycin derivative or a salt thereof with an organism-derived oxidase; and (3) a gastrointestinal function promoting agent containing a 6,9-hemiacetal-erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions or a salt thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 29, 1998
    Assignee: Takeda Chemical Corporation
    Inventors: Setsuo Harada, Yasunori Funabashi, Nobuhiro Inatomi, Shigeharu Tanayama, Seiichi Tanida
  • 14 and/or 15-hydroxy 6,9 hemiacetal erythromycin derivatives
    Patent number: 5470961
    Abstract: Disclosed are (1) a structurally novel 6,9-hemiacetal-erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions or a salt thereof, which has an excellent gastrointestinal function promoting effect and is low in toxicity; (2) a process for preparing a 6,9-hemiacetal-erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions or a salt thereof, which comprises reacting a 6,9-hemiacetal-erythromycin derivative or a salt thereof with an organism-derived oxidase; and (3) a gastrointestinal function promoting agent containing a 6,9-hemiacetal-erythromycin derivative having a hydroxyl group at at least one of the 14- and 15-positions or a salt thereof.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: November 28, 1995
    Assignees: Takeda Chemical Ind., Ltd., Kitasato Kenkyushio
    Inventors: Setsuo Harada, Yasunori Funabashi, Nobuhiro Inatomi, Shigeharu Tanayama, Seiichi Tanida
  • Antibiotics TAN-1057
    Patent number: 4971965
    Abstract: Novel antibiotics TAN-1057 represented by the formula: ##STR1## wherein, the absolute configuration at (A) is R or S; R.sub.1 is hydrogen and both R.sub.2 and R.sub.3 taken together form a chemical bond, or R.sub.3 is hydrogen and both R.sub.1 and R.sub.2 taken together form a chemical bond; were produced by microorganisms belonging to the genus Flexibacter. TAN-1057 strongly inhibit the growth of pathogenic microorganisms and malignant tumors, thus being useful as therapeutic agents of infectious diseases or antitumor agents.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: November 20, 1990
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideo Ono, Yasunori Funabashi, Setsuo Harada