Patents by Inventor Yoshihiko Kitaura

Yoshihiko Kitaura 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).

  • Phenoxyphenyl acetic acids and their medicinal use
    Patent number: 4472433
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is phenyl substituted with halogen or lower alkyl, and R.sup.4 is a group of the formula C.sub.n H.sub.2n in which n is an integer of 1 to 7; or a pharmaceutically acceptable salt thereof. The compound exhibits antipyretic, analgesic and anti-inflammatory properties.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: September 18, 1984
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Ikuo Ueda, Yoshihiko Kitaura, Nobukiyo Konishi
  • Peptide, process for preparation thereof and use thereof
    Patent number: 4460502
    Abstract: The invention deals with novel peptides useful for the therapeutic treatment of infectious diseases caused by pathogenic microorganisms, having the structure ##STR1## wherein R.sup.1 is substituted or unsubstituted lower alkanoyl, or substituted or unsubstituted aralkanoyl,R.sup.2 and R.sup.3 are each carboxy or protected carboxy,R.sup.4 is hydrogen or an amino protective group, andR.sup.5 is hydrogen or lower alkyl, and their pharmaceutically acceptable salts.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: July 17, 1984
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yoshihiko Kitaura, Osamu Nakaguchi, Keiji Hemmi, Satoshi Yonishi, Hidekazu Takeno, Satoshi Kada, Masashi Hashimoto
  • Oxazole derivatives
    Patent number: 4458078
    Abstract: The invention relates to novel intermediates for the preparation of peptides of pharmacological activity, said intermediates being of the formulas: ##STR1## wherein R.sub.2.sup.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: July 3, 1984
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Yoshihiko Kitaura, Osamu Nakaguchi, Keiji Hemmi, Matsuhiko Aratani, Hidekazu Takeno, Satoshi Okada, Hirokazu Tanaka, Masashi Hashimoto, Yoshio Kuroda, Eiko Iguchi, Masanobu Kohsaka, Hatsuo Aoki, Hiroshi Imanaka
  • Phenyl-alkanoic acid derivative and preparation thereof
    Patent number: 4367238
    Abstract: This invention relates to new phenyl-alkanoic acids, their derivatives at the carboxy group, and pharmaceutically acceptable salts thereof, which have anti-inflammatory, analgesic and antipyretic activities.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: January 4, 1983
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Ikuo Ueda, Yoshihiko Kitaura, Masaaki Matsuo, Nobukiyo Konishi
  • Peptides, process for preparation thereof and use thereof
    Patent number: 4354966
    Abstract: The invention relates to novel peptides and their pharmaceutically acceptable salts, particularly useful for pharmaceutical purposes such as in the therapeutic treatment of infectious diseases caused by pathogenic microorganisms. The compounds have the structure ##STR1## wherein R.sup.1 is hydrogen or acyl;R.sup.2 is carboxy or protected carboxy or a group of the formula: --COHN--R.sub.a.sup.2 wherein R.sub.a.sup.2 is carboxy (lower) alkyl or protected carboxy (lower) alkyl;R.sup.3 is carboxy, protected carboxy, lower alkyl, hydroxyphenyl, carbamoyl or a group of the formula: ##STR2## wherein R.sub.a.sup.3 is hydrogen, amino, protected amino or acylamino, R.sub.b.sup.3 is carboxy or protected carboxy;R.sup.p is carboxy, protected carboxy, carbamoyl, carboxy (lower) alkyl or protected carboxy (lower) alkyl;l is an integer 2,m is an integer 0 to 2 andn is an integer 1,provided that,whenR.sup.1 is hydrogen or acyl,R.sup.2 is carboxy, protected carboxy or a group of the formula: --CONHR.sub.a.sup.2 wherein R.sub.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: October 19, 1982
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yoshihiko Kitaura, Osamu Nakaguchi, Keiji Hemmi, Matsuhiko Aratani, Hidekazu Takeno, Satoshi Okada, Hirokazu Tanaka, Masashi Hashimoto
  • Peptide, process for preparation thereof and use thereof
    Patent number: 4311640
    Abstract: The invention deals with novel peptides useful for the therapeutic treatment of infectious diseases caused by pathogenic microorganisms. Included is the peptide FR900156 having the structure: ##STR1## as well as the peptides of the structure ##STR2## wherein R.sup.1 is acyl;R.sub.b.sup.1 is hydrogen, methyl, isopropyl, hydroxymethyl, protected hydroxymethyl or benzyl;R.sup.2 is hydrogen, carboxy, protected carboxy, or a group of the formula: ##STR3## wherein R.sub.a.sup.2 is mono- or di-carboxy lower alkyl or ar(carboxy) lower alkyl whose aryl moiety may be substituted by hydroxy,R.sub.b.sup.2 is hydrogen or lower alkyl;R.sup.p and R.sup.q are each hydrogen, carboxy, protected carboxy, with proviso that when one of R.sup.2 and R.sup.q is hydrogen, then the other is carboxy or protected carboxy;R.sup.r is hydrogen or amino protective group; m is an integer 1 to 3; and n is 1 provided that when R.sup.1 is hydrogen, t-butoxycarbonyl or N-acetylmuramyl, R.sub.b.sup.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: January 19, 1982
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yoshio Kuroda, Eiko Iguchi, Masanobu Kohsaka, Hatsuo Aoki, Hiroshi Imanaka, Yoshihiko Kitaura, Osamu Nakaguchi, Keiji Hemmi, Matsuhiko Aratani, Hidekazu Takeno, Satoshi Okada, Hirokazu Tanaka, Masashi Hashimoto
  • Bicyclomycin derivatives
    Patent number: 4215043
    Abstract: Bicyclomycin derivatives having the general formula: ##STR1## wherein R.sub.I is ##STR2## R.sub.II and R.sub.III are hydrogens or aliphatic, R.sub.
    Type: Grant
    Filed: October 15, 1976
    Date of Patent: July 29, 1980
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Takashi Kamiya, Shizuo Maeno, Yoshihiko Kitaura