Patents by Inventor Toshinari Tamura

Toshinari Tamura 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).

  • 4-substituted-2-azetidinone compound, process of producing the compounds, and medicaments containing the compounds
    Patent number: 4610821
    Abstract: A novel 4-substituted-2-azetidinone compound shown by the general formula ##STR1## and salts thereof. The compounds of this invention have a strong CNS activity and are useful for improving a disturbance of consciousness in shizophrenia, a head injury, etc., or improving hypobulia, memory loss, etc.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: September 9, 1986
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Toshinari Tamura, Hidenori Iwamoto, Makoto Yoshida, Minoru Yamamoto
  • 4-Substituted-2-azetidinone compound, process of producing the compounds, and medicaments containing the compounds
    Patent number: 4564609
    Abstract: A novel 4-substituted-2-azetidinone compound shown by the general formula ##STR1## and salts thereof. The compounds of this invention have a strong CNS activity and are useful for improving a disturbance of consciousness in schizophrenia, a head injury, etc., or improving hypobulia, memory loss, etc.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: January 14, 1986
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Toshinari Tamura, Hidenori Iwamoto, Makoto Yoshida, Minoru Yamamoto
  • Antisecretory imidazole amidine compounds, composition and method of use
    Patent number: 4379158
    Abstract: Novel heterocyclic compounds shown by the formula ##STR1## wherein Het represents a 5-membered or 6-membered heterocyclic group which may have substituent(s); Z represents a sulfur atom or oxygen atom; X represents an oxygen atom or the unsubstituted or substituted imino group shown by N--R.sub.1 (wherein R.sub.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: April 5, 1983
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yasufumi Hirata, Isao Yanagisawa, Toshinari Tamura, Masaaki Takeda
  • Antisecretory heterocyclic amidine compounds
    Patent number: 4252819
    Abstract: Novel heterocyclic compounds shown by the formula ##STR1## wherein Het represents a 5-membered or 6-membered heterocyclic group which may have substituent(s); Z represents a sulfur atom or oxygen atom; X represents an oxygen atom or the unsubstituted or substituted imino group shown by N--R.sub.1 (wherein R.sub.
    Type: Grant
    Filed: August 16, 1978
    Date of Patent: February 24, 1981
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yasufumi Hirata, Isao Yanagisawa, Toshinari Tamura, Masaaki Takeda
  • 20-Alkoxy-16-alkyl-prostadienoic acid derivatives
    Patent number: 4246280
    Abstract: There are disclosed 20-alkoxy-16-alkyl-prostadienoic acid derivatives of the formula: ##STR1## wherein A represents ##STR2## R and R.sup.5, which may be the same or different, each represents a hydrogen atom or a lower alkyl group; and R.sup.1 and R.sup.4, which may be the same or different, each represents a lower alkyl group, and the pharmaceutically acceptable non-toxic salts thereof. These compounds have excellent pharmacological effects as prostaglandin E.sub.2 and prostaglandin F.sub.2.alpha..
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: January 20, 1981
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Noriyoshi Inukai, Masuo Murakami, Hidenori Iwamoto, Isao Yanagisawa, Toshinari Tamura, Yoshio Ishii, Kenichi Tomioka, Tetsuya Shiozaki, deceased
  • Novel 3,15-dilower alkyl PGE.sub.2 derivatives
    Patent number: 4058665
    Abstract: 3,15-Dilower alkyl prostaglandin E.sub.2 derivatives and 3,15-dilower alkyl prostaglandin D.sub.2 derivatives are disclosed. These compounds have antigastric ulcer activity without undesirable side effects to intestinal organs.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: November 15, 1977
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Noriyoshi Inukai, Masuo Murakami, Hidenori Iwamoto, Isao Yanagisawa, Toshinari Tamura, Yoshio Ishii, Tetsuya Shizaoki, Kenichi Tomioka, Tokuichi Takagi
  • 20-Alkoxy-16-alkyl prostadienoic acid derivatives
    Patent number: 4055589
    Abstract: A 20-alkoxy-16-alkyl-prostadienoic acid derivative shown by the formula ##STR1## wherein A represents ##STR2## R and R.sup.5, which may be the same or different, each represents a hydrogen atom or a lower alkyl group; and R.sup.1 and R.sup.4, which may be the same or different, each represents a lower alkyl group,And the pharmacologically acceptable nontoxic salts thereof.The compounds have excellent effects as prostaglandin E.sub.2 and prostaglandin F.sub.2.alpha..
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: October 25, 1977
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Noriyoshi Inukai, Masuo Murakami, Hidenori Iwamoto, Isao Yanagisawa, Toshinari Tamura, Yoshio Ishii, Kenichi Tomioka, Tetsuya Shiozaki, deceased
  • Novel prostaglandin derivatives
    Patent number: 4026927
    Abstract: Novel prostaglandin derivatives are provided having the formula: ##STR1## wherein A represents ##STR2## one of R.sub.3 and R.sub.4 represents a hydrogen atom and the other of them represents a lower alkyl group; one of R.sub.5 and R.sub.6 represents a hydrogen atom and the other of them represents a hydroxyl group; and one of R.sub.7 and R.sub.8 represents a hydrogen atom and the other of them represents a lower alkyl group.The compounds of this invention have excellent effects as prostaglandin E.sub.2 and prostaglandin F.sub.2.sub..alpha..
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: May 31, 1977
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Masuo Murakami, Noriyoshi Inukai, Hidenori Iwamoto, Toshinari Tamura, Isao Yanagisawa, Osamu Hasegawa, Yoshio Ishii, Hideya Matsuda, Tetsuya Shiozaki, Kenichi Tomioka