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).
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Publication number: 20090131341Abstract: 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: ApplicationFiled: October 13, 2006Publication date: May 21, 2009Inventors: Satoshi Omura, Toshiaki Sunazuka, Kenichiro Nagai, Hideaki Shima, Haruko Yamabe
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Patent number: 7521428Abstract: 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: GrantFiled: October 29, 2002Date of Patent: April 21, 2009Assignee: The Kitasato InstituteInventors: Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka, Masayoshi Arai, Tohru Nagamitsu
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Patent number: 7491738Abstract: There is provided a pest control agent comprising a compound represented by formula (I) as active ingredient.Type: GrantFiled: May 31, 2006Date of Patent: February 17, 2009Assignees: 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
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Patent number: 7250402Abstract: 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 reType: GrantFiled: November 29, 2004Date of Patent: July 31, 2007Assignee: The Kitasato InstituteInventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
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Publication number: 20060281780Abstract: There is provided a pest control agent comprising a compound represented by formula (I) as active ingredient.Type: ApplicationFiled: May 31, 2006Publication date: December 14, 2006Applicants: Meiji Seika Kaisha, Ltd., The Kitasato InstituteInventors: Kimihiko Goto, Ryo Horikoshi, Mariko Tsuchida, Kazuhiko Oyama, Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka
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Patent number: 7144866Abstract: 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: GrantFiled: August 8, 2001Date of Patent: December 5, 2006Assignee: The Kitasato InstituteInventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
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Patent number: 7034005Abstract: 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: GrantFiled: November 15, 2002Date of Patent: April 25, 2006Assignee: The Kitasato InstituteInventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
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Publication number: 20060025357Abstract: 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: ApplicationFiled: September 23, 2005Publication date: February 2, 2006Applicant: THE KITASATO INSTITUTEInventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
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Publication number: 20050176655Abstract: 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: ApplicationFiled: October 29, 2002Publication date: August 11, 2005Inventors: Satoshi Omura, Hiroshi Tomoda, Toshiaki Sunazuka, Masayoshi Arai, Tohru Nagamitsu
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Publication number: 20050148520Abstract: 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 represenType: ApplicationFiled: November 29, 2004Publication date: July 7, 2005Applicant: Kitasato InstituteInventors: Satosh Omura, Kenichiro Nagai, Toshiaki Sunazuka
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Patent number: 6835747Abstract: 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: GrantFiled: July 28, 2003Date of Patent: December 28, 2004Assignee: The Kitasato InstituteInventors: Satoshi Omura, Kazuro Shiomi, Tohru Nagamitsu, Toshiaki Sunazuka, Yuzuru Iwai
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Patent number: 6734292Abstract: 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: GrantFiled: July 25, 2002Date of Patent: May 11, 2004Assignee: The Kitasato InstituteInventors: Satoshi Omura, Yuzuru Iwai, Toshiaki Sunazuka, Tohru Nagamitsu
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Publication number: 20040087519Abstract: A compound represented by the general formula (I) or a salt thereof: 1Type: ApplicationFiled: September 8, 2003Publication date: May 6, 2004Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
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Publication number: 20040067896Abstract: 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], 1Type: ApplicationFiled: September 17, 2003Publication date: April 8, 2004Applicant: THE KITASATO INSTITUTEInventors: Satoshi Omura, Yuzuru Iwai, Toshiaki Sunazuka, Tohru Nagamitsu
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Publication number: 20040024058Abstract: 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: ApplicationFiled: August 12, 2003Publication date: February 5, 2004Inventors: Haruki Yamada, Hiroaki Kiyohara, Takayuki Nagai, Toshiaki Sunazuka
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Publication number: 20040018993Abstract: Provided is a compound represented by the general formula (I) or a salt thereof: 1Type: ApplicationFiled: July 21, 2003Publication date: January 29, 2004Inventors: Satoshi Omura, Kenichiro Nagai, Toshiaki Sunazuka
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Publication number: 20030186900Abstract: 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: ApplicationFiled: November 15, 2002Publication date: October 2, 2003Inventors: Satoshi Omura, Kiyoko Akagawa, Toshiaki Sunazuka
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Patent number: 6605595Abstract: 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: GrantFiled: February 11, 2002Date of Patent: August 12, 2003Assignee: The Kitasato InstituteInventors: Satoshi Omura, Toshiaki Sunazuka, Andreas Turberg, Georg von Samson-Himmelstjerna, Olaf Hansen, Achim Harder
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Patent number: 5869675Abstract: 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: GrantFiled: November 28, 1997Date of Patent: February 9, 1999Assignee: The Kitasato InstituteInventors: Satoshi Omura, Toshiaki Sunazuka, Haruo Tanaka