Patents by Inventor Toshiaki Sunazuka

Toshiaki Sunazuka 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).

  • Publication number: 20090131341
    Abstract: A compound represented by the formula [I] wherein each symbol is as defined in the specification or a pharmacologically acceptable salt thereof, and a pharmaceutical composition containing the compound as an active ingredient.
    Type: Application
    Filed: October 13, 2006
    Publication date: May 21, 2009
    Inventors: Satoshi Omura, Toshiaki Sunazuka, Kenichiro Nagai, Hideaki Shima, Haruko Yamabe
  • Patent number: 7521428
    Abstract: Macrolide derivatives having enhancing effect for activities of azole antifungal agents, acting at low concentration and within a short time against fungal infection and reducing the frequency of appearance of resistant microorganisms. One such substance is a compound represented by the formula [I]: wherein R1 is Ac, R2 and R3 are Ac, and R4 is Me; when R1 is H, R2 and R3 are Ac, and R4 is Me; when R1 is H, R2 and R3 are Ac, and R4 is H, when R1 Bzl, R2 and R3 are Bzl, and R4 is Me; when R1 is Ac, R2 and R3 are Pr, and R4 is Me; when R1 is Ac, R2 and R3 are Hex, and R4 is Me; when R1 is Ac, R2 and R3 are Bzl, and R4 is Me; when R1 is H, R2 and R3 are Pr, and R4 is Me; when R1 is H, R2 and R3 are Hex, and R4 is Me; when R1 is H, R2 and R3 are Bzl, and R4 is Me; when R1 is H, R2 is H, R3 is Bzl, and R4 is Me; when R1 is H, R2 and R3 are Hex, and R4 is H, or when R1 is H, R2 and R3 are Hex, and R4 is Et.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: April 21, 2009
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka, Masayoshi Arai, Tohru Nagamitsu
  • Patent number: 7491738
    Abstract: There is provided a pest control agent comprising a compound represented by formula (I) as active ingredient.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 17, 2009
    Assignees: Meiji Seika Kaisha, Ltd., The Kitasato Institute (A School Juridical Person)
    Inventors: Kimihiko Goto, Ryo Horikoshi, Mariko Tsuchida, Kazuhiko Oyama, Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka
  • Patent number: 7250402
    Abstract: A compound represented by the general formula (I) or a salt thereof: wherein represents —CH?CH—, —CH2—CH2— or the like, between R1 and the carbon atom at 4?-position represents a single bond or a double bond, between R2 and the carbon atom at 5-position represents a single bond or a double bond, and for example, 1) when represents —CH?CH— or —CH2—CH2—, and between R1 and the carbon atom at 4?-position represents a double bond, R1 represents ?C(R11)(R12) (wherein R11 represents a lower alkyl group or the like and R12 represents a hydrogen atom or the like) or the like, and R2 represents a hydroxyl group or the like, or R2 may be combined together with the carbon atom at 5-position to form a carbonyl group, and 2) when represents —CH?CH— or —CH2—CH2—, and between R1 and the carbon atom at 4?-position represents a single bond, R1 represents —OCH(R1a)(R1b) (wherein R1a represents a lower alkyl or the like and R1b represents a hydrogen atom or the like) or the like, and R2 re
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: July 31, 2007
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
  • Publication number: 20060281780
    Abstract: There is provided a pest control agent comprising a compound represented by formula (I) as active ingredient.
    Type: Application
    Filed: May 31, 2006
    Publication date: December 14, 2006
    Applicants: Meiji Seika Kaisha, Ltd., The Kitasato Institute
    Inventors: Kimihiko Goto, Ryo Horikoshi, Mariko Tsuchida, Kazuhiko Oyama, Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka
  • Patent number: 7144866
    Abstract: Provided is a compound represented by the general formula (I) or a salt thereof: wherein, —XY— represents —CH?CH— and the like, between R2 and the carbon atom at 5-position represents a single bond or a double bond, R1 represents a lower alkyl group, a formyl group, a carboxyl group, a lower alkoxycarbonyl group (wherein a lower alkyl moiety of said lower alkoxycarbonyl group may be substituted with a heterocyclic group) and the like, and R1a represents a hydrogen atom, provided when R1 represents a lower alkoxycarbonyl group and the like, R1a may further represents a lower alkoxycarbonyl group and the like, when between R2 and the carbon atom at 5-position is a single bond, R2 represents a hydroxyl group and the like, and when between R2 and the carbon atom at the 5-position is a double bound, R2 combines with the carbon atom at 5-position to form a hydroxime group (—C(?NOH)) and the like, and R3 represents a hydroxyl group or a tri(lower alkyl)silyloxy group.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: December 5, 2006
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
  • Patent number: 7034005
    Abstract: The present invention relates to agent for suppressing infection and proliferation of human immunodeficiency syndrome virus (HIV-1), which infects immunocompetent cells such as macrophage or dendritic cell and causes destruction of immune system, and use of known compounds, macrolide derivatives for suppression of infection and proliferation of human immunodeficiency syndrome virus in M type macrophage derived from human monocytes. The present invention is useful for treatment of patients with HIV-1 infection by low cost chemotherapeutic agents, and in addition, is clinically used as supplement agent in HAART.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: April 25, 2006
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
  • Publication number: 20060025357
    Abstract: The present invention relates to agent for suppressing infection and proliferation of human immunodeficiency syndrome virus (HIV-1), which infects immunocompetent cells such as macrophage or dendritic cell and causes destruction of immune system, and use of known compounds, macrolide derivatives for suppression of infection and proliferation of human immunodeficiency syndrome virus in M type macrophage derived from human monocytes. The present invention is useful for treatment of patients with HIV-1 infection by low cost chemotherapeutic agents, and in addition, is clinically used as supplement agent in HAART.
    Type: Application
    Filed: September 23, 2005
    Publication date: February 2, 2006
    Applicant: THE KITASATO INSTITUTE
    Inventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
  • Publication number: 20050176655
    Abstract: Macrolide derivatives having enhancing effect for activities of azole antifungal agents, acting at low concentration and within a short time against fungal infection and reducing the frequency of appearance of resistant microorganisms. One such substance is a compound represented by the formula [I]: wherein R1 is Ac, R2 and R3 are Ac, and R4 is Me; when R1 is H, R2 and R3 are Ac, and R4 is Me; when R1 is H, R2 and R3 are Ac, and R4 is H, when R1 Bzl, R2 and R3 are Bzl, and R4 is Me; when R1 is Ac, R2 and R3 are Pr, and R4 is Me; when R1 is Ac, R2 and R3 are Hex, and R4 is Me; when R1 is Ac, R2 and R3 are Bzl, and R4 is Me; when R1 is H, R2 and R3 are Pr, and R4 is Me; when R1 is H, R2 and R3 are Hex, and R4 is Me; when R1 is H, R2 and R3 are Bzl, and R4 is Me; when R1 is H, R2 is H, R3 is Bzl, and R4 is Me; when R1 is H, R2 and R3 are Hex, and R4 is H, or when R1 is H, R2 and R3 are Hex, and R4 is Et.
    Type: Application
    Filed: October 29, 2002
    Publication date: August 11, 2005
    Inventors: Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka, Masayoshi Arai, Tohru Nagamitsu
  • Publication number: 20050148520
    Abstract: A compound represented by the general formula (I) or a salt thereof: wherein represents —CH?CH—, —CH2—CH2— or the like, between R1 and the carbon atom at 4?-position represents a single bond or a double bond, between R2 and the carbon atom at 5-position represents a single bond or a double bond, and for example, 1) when represents —CH?CH— or —CH2—CH2—, and between R1 and the carbon atom at 4?-position represents a double bond, R1 represents ?C(R11)(R12) (wherein R13 represents a lower alkyl group or the like and R12 represents a hydrogen atom or the like) or the like, and R2 represents a hydroxyl group or the like, or R2 may be combined together with the carbon atom at 5-position to form a carbonyl group, and 2) when represents —CH?CH— or —CH2—CH2—, and between R1 and the carbon atom at 4?-position represents a single bond, R1 represents —OCH(R1a)(R1b) (wherein R1a represents a lower alkyl or the like and R1b represents a hydrogen atom or the like) or the like, and R2 represen
    Type: Application
    Filed: November 29, 2004
    Publication date: July 7, 2005
    Applicant: Kitasato Institute
    Inventors: Satosh Omura, Kenichiro Nagai, Toshiaki Sunazuka
  • Patent number: 6835747
    Abstract: The present invention relates to obtain novel FT-0554A substance useful for infectious disease of parasite, especially helminth and more particularly relates to the novel FT-0554A substance represented by the following formula [I] or the tautomer thereof represented by the formula [II] obtained by treating FT-0554 substance represented by the formula [II] under alkaline condition.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: December 28, 2004
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Kazuro Shiomi, Tohru Nagamitsu, Toshiaki Sunazuka, Yuzuru Iwai
  • Patent number: 6734292
    Abstract: The present invention is to obtain novel anti-inflammatory agents having decreased antibacterial activity and increased anti-inflammatory action, and is psedoerythromycin derivatives represented by the following general formula [I], wherein R1 and R2 are same or different and each represents H, alkyl, alkynyl, acyl or sulfonyl, in which these groups may optionally have substituents, and Me indicates methyl.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: May 11, 2004
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Yuzuru Iwai, Toshiaki Sunazuka, Tohru Nagamitsu
  • Publication number: 20040087519
    Abstract: A compound represented by the general formula (I) or a salt thereof: 1
    Type: Application
    Filed: September 8, 2003
    Publication date: May 6, 2004
    Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
  • Publication number: 20040067896
    Abstract: The present invention is to obtain novel anti-inflammatory agents having decreased antibacterial activity and increased anti-inflammatory action, and is psedoerythromycin derivatives represented by the following general formula [I], 1
    Type: Application
    Filed: September 17, 2003
    Publication date: April 8, 2004
    Applicant: THE KITASATO INSTITUTE
    Inventors: Satoshi Omura, Yuzuru Iwai, Toshiaki Sunazuka, Tohru Nagamitsu
  • Publication number: 20040024058
    Abstract: The present invention provides an adjuvant that is a hydroxy unsaturated fatty acid or a derivative thereof, as well as a vaccine preparation containing the adjuvant as a constituent.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 5, 2004
    Inventors: Haruki Yamada, Hiroaki Kiyohara, Takayuki Nagai, Toshiaki Sunazuka
  • Publication number: 20040018993
    Abstract: Provided is a compound represented by the general formula (I) or a salt thereof: 1
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
  • Publication number: 20030186900
    Abstract: The present invention relates to agent for suppressing infection and proliferation of human immunodeficiency syndrome virus (HIV-1), which infects immunocompetent cells such as macrophage or dendritic cell and causes destruction of immune system, and use of known compounds, macrolide derivatives for suppression of infection and proliferation of human immunodeficiency syndrome virus in M type macrophage derived from human monocytes. The present invention is useful for treatment of patients with HIV-1 infection by low cost chemotherapeutic agents, and in addition, is clinically used as supplement agent in HAART.
    Type: Application
    Filed: November 15, 2002
    Publication date: October 2, 2003
    Inventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
  • Patent number: 6605595
    Abstract: Avermectin derivatives represented by the general formula (I) or salts thereof: wherein —X----Y— represents —CH═CH—, —CH2—C(═O)—, —CH2—CH2—, or —CH2—CH(R13)—; for example, 1) when —X----Y— represents —CH═CH—, R1 represents (R11)(R12)C [wherein R11 represents a substituted or unsubstituted lower alkyl group; a formyl group; a lower alkoxylcarbonyl group etc.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: August 12, 2003
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Toshiaki Sunazuka, Andreas Turberg, Georg von Samson-Himmelstjerna, Olaf Hansen, Achim Harder
  • Patent number: 5869675
    Abstract: Novel lactacystin derivatives other than lactacystin per se, with superior activity for the genesis of neurites and highly selective toxicity and low cytotoxicity as compared with known lactacystin have been prepared, of the formula ##STR1## wherein R is lower alkoxy, --S--(CH.sub.2).sub.n R.sup.1 or --S--(CH.sub.2) .sub.n --CH(R.sup.2)-(R.sup.3), in which R.sup.1 is branched or straight-chain lower alkyl, hydroxy, carboxyl, lower alkoxycarbonyl, optionally substituted phenyl, substituted or unsubstituted amino or pyridyl, R.sup.2 is substituted or unsubstituted amino, lower alkyl or amino acid residue, R.sup.3 is carboxyl, lower alkoxycarbonyl, lower alkenyloxycarbonyl or amino acid residue, and n is 0-4, or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: February 9, 1999
    Assignee: The Kitasato Institute
    Inventors: Satoshi Omura, Toshiaki Sunazuka, Haruo Tanaka