Patents by Inventor Yoshinari Wakiyama

Yoshinari Wakiyama 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: 20210315892
    Abstract: A therapeutic agent for treating at least one disease selected from the group consisting of inflammatory diseases, autoimmune diseases, fibrotic diseases, and cancer diseases, comprising: at least one selected from the group consisting of a compound represented by the following general formula (1) and pharmacologically acceptable salts thereof as an active ingredient. [In the formula (1), R1 and R2 may be the same or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxy group, a cyano group, an optionally substituted C1-6 alkyl group et al.; R3 represents a hydrogen atom; R4 represents an optionally substituted 4- to 10-membered monocyclic heterocyclic group containing 1 to 4 heteroatoms selected from an oxygen atom, a nitrogen atom, and a sulfur atom; X represents a group represented by the following formula: —CH2—, —CH2—CH2—, —CH2—CH2—CH2—, or —CH2—O—CH2—; and Z represents a hydrogen atom or a hydroxyl group.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 14, 2021
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Natsuki ISHIDA, Yuji TABATA, Takashi MATSUHIRA, Keiji TAMURA, Takeru YAMAKAWA, Satoshi ISSHIKI, Yoshinari WAKIYAMA, Shohei OUCHI
  • Patent number: 10669283
    Abstract: A compound represented by the general formula (1) below or a pharmacologically acceptable salt thereof: [In the formula (1), R1 and R2 may be the same or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxy group, a cyano group, an optionally substituted C1-6 alkyl group et al.; R3 represents a hydrogen atom; R4 represents an optionally substituted 4- to 10-membered monocyclic heterocyclic group containing 1 to 4 heteroatoms selected from an oxygen atom, a nitrogen atom, and a sulfur atom; X represents a group represented by the following formula: —CH2—, —CH2—CH2—, —CH2—CH2—CH2—, or —CH2—O—CH2—; and Z represents a hydrogen atom or a hydroxyl group].
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: June 2, 2020
    Assignee: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Keiji Tamura, Takeru Yamakawa, Satoshi Isshiki, Yoshinari Wakiyama, Shohei Ouchi, Takashi Matsuhira, Natsuki Ishida, Yuji Tabata
  • Publication number: 20190322686
    Abstract: A compound represented by the general formula (1) below or a pharmacologically acceptable salt thereof: [In the formula (1), R1 and R2 may be the same or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxy group, a cyano group, an optionally substituted C1-6 alkyl group et al.; R3 represents a hydrogen atom; R4 represents an optionally substituted 4- to 10-membered monocyclic heterocyclic group containing 1 to 4 heteroatoms selected from an oxygen atom, a nitrogen atom, and a sulfur atom; X represents a group represented by the following formula: —CH2—, —CH2—CH2—, —CH2—CH2—CH2—, or —CH2—O—CH2—; and Z represents a hydrogen atom or a hydroxyl group.
    Type: Application
    Filed: December 26, 2017
    Publication date: October 24, 2019
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Keiji TAMURA, Takeru YAMAKAWA, Satoshi ISSHIKI, Yoshinari WAKIYAMA, Shohei OUCHI, Takashi MATSUHIRA, Natsuki ISHIDA, Yuji TABATA
  • Publication number: 20190047966
    Abstract: A compound represented by the following general formula (I) or a pharmacologically acceptable salt thereof: [in the formula (I), A1 represents a methylene group or the like; A2 represents a methylene group or an oxygen atom; A3 represents an azetidinyl group, a pyrrolidinyl group, a piperidinyl group, a piperazinyl group, or a homopiperazinyl group which is optionally substituted with —N(R1)R2, —N(R1)R3, and/or —R3; A4 represents —O—, —S—, —S(O)—, —S(O)2—, or —N(R1)—; A5 represents an optionally substituted C3-10 cycloalkylalkyl group or the like; R4 represents a halogen atom or the like; and n represents an integer of 0 or 1].
    Type: Application
    Filed: January 27, 2017
    Publication date: February 14, 2019
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Mami ARAI, Takeru YAMAKAWA, Rie NAKAJIMA, Kota MURASAKI, Yoshinari WAKIYAMA, Yuta FUJIWARA, Makoto ISHIKAWA, Tomohisa NINOMIYA
  • Patent number: 7879808
    Abstract: An objective of the present invention is to provide compounds of formula (1) or their pharmacologically acceptable salts or solvates wherein A represents aryl; R1 represents N-optionally substituted C1-6 alkyl-N-optionally substituted C1-6 alkylamino-C1-6 alkyl; R2 represents a hydrogen atom or optionally substituted C1-6 alkyl; R3 represents optionally substituted C1-6 alkyl or C3-6 cycloalkyl-C1-4 alkyl; m is 1 to 3; n is 0; and p is 0 to 2. The compounds are novel lincomycin derivatives that have a potent activity against resistant Streptococcus pneumoniae, which have recently posed problems, in the treatment of infectious diseases. Further, the compounds are usable as antimicrobial agents and are useful for preventing or treating bacterial infectious diseases.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: February 1, 2011
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yoshinari Wakiyama, Kou Kumura, Satomi Masaki, Kazutaka Ueda, Yasuo Sato, Chika Kikuchi, Eijirou Umemura, Yoko Hirai, Hiroshi Kondo
  • Patent number: 7871982
    Abstract: This invention provides compounds of formula (I) or its pharmacologically acceptable salt or solvate, wherein A represents aryl or a monocyclic or bicyclic heterocyclic group, R1 represents a halide, nitro, substituted C1-6 alkyl, optionally substituted amino, C1-6 alkyloxycarbonyl, optionally substituted aryl, a heterocyclic group, or heterocyclic carbonyl, R2 represents a hydrogen atom or C1-6 alkyl, R3 represents C1-6 alkyl, all of R4, R5, and R6 represent a hydrogen atom, R7 represents C1-6 alkyl, m is 1 or 2, and n is 1. The compounds are novel lincomycin derivatives having a potent activity against resistant pneumococci. The compounds can be used as an antimicrobial agent and are useful for preventing or treating bacterial infectious diseases.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: January 18, 2011
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Eijirou Umemura, Yoshinari Wakiyama, Kazutaka Ueda, Kou Kumura, Satomi Masaki, Takashi Watanabe, Mikio Yamamoto, Chizuko Kaji, Keiichi Ajito
  • Patent number: 7867980
    Abstract: An objective of the present invention is to provide compounds of formula (I) or their pharmacologically acceptable salts or solvates wherein A represents aryl while R1 represents a five- or six-membered monocyclic heterocyclic group, or A represents a four- to six-membered monocyclic heterocyclic group while R1 represents aryl or a five- or six-membered monocyclic heterocyclic group; R2 represents a hydrogen atom or C1-6 alkyl; R3 represents C1-6 alkyl or C3-6 cycloalkyl-C1-4 alkyl; R4, R5, and R6 represent a hydrogen atom; R7 represents C1-6 alkyl; and m is 1 to 3. The compounds are novel lincosamide derivatives that have a potent activity against resistant Streptococcus pneumoniae. Further, the compounds are usable as antimicrobial agents and are useful for preventing or treating bacterial infectious diseases.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: January 11, 2011
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Eijirou Umemura, Kou Kumura, Satomi Masaki, Kazutaka Ueda, Yoshinari Wakiyama, Yasuo Sato, Mikio Yamamoto, Keiichi Ajito, Takashi Watanabe, Chizuko Kaji
  • Publication number: 20100210570
    Abstract: An objective of the present invention is to provide compounds of formula (1) or their pharmacologically acceptable salts or solvates wherein A represents aryl; R1 represents N-optionally substituted C1-6 alkyl-N-optionally substituted C1-6 alkylamino-C1-6 alkyl; R2 represents a hydrogen atom or optionally substituted C1-6 alkyl; R3 represents optionally substituted C1-6 alkyl or C3-6 cycloalkyl-C1-4 alkyl; m is 1 to 3; n is 0; and p is 0 to 2. The compounds are novel lincomycin derivatives that have a potent activity against resistant Streptococcus pneumoniae, which have recently posed problems, in the treatment of infectious diseases. Further, the compounds are usable as antimicrobial agents and are useful for preventing or treating bacterial infectious diseases.
    Type: Application
    Filed: May 30, 2008
    Publication date: August 19, 2010
    Inventors: Yoshinari Wakiyama, Kou Kumura, Satomi Masaki, Kazutaka Ueda, Yasuo Sato, Chika Kikuchi, Eijirou Umemura, Yoko Hirai, Hiroshi Kondo
  • Publication number: 20100184746
    Abstract: An objective of the present invention is to provide compounds of formula (I) or their pharmacologically acceptable salts or solvates wherein A represents aryl while R1 represents a five- or six-membered monocyclic heterocyclic group, or A represents a four- to six-membered monocyclic heterocyclic group while R1 represents aryl or a five- or six-membered monocyclic heterocyclic group; R2 represents a hydrogen atom or C1-6 alkyl; R3 represents C1-6 alkyl or C3-6 cycloalkyl-C1-4 alkyl; R4, R5, and R6 represent a hydrogen atom; R7 represents C1-6 alkyl; and m is 1 to 3. The compounds are novel lincosamide derivatives that have a potent activity against resistant Streptococcus pneumoniae. Further, the compounds are usable as antimicrobial agents and are useful for preventing or treating bacterial infectious diseases.
    Type: Application
    Filed: May 30, 2008
    Publication date: July 22, 2010
    Inventors: Eijirou Umemura, Kou Kumura, Satomi Masaki, Kazutaka Ueda, Yoshinari Wakiyama, Yasuo Sato, Mikio Yamamoto, Keiichi Ajito, Takashi Watanabe, Chizuko Kaji
  • Publication number: 20090156512
    Abstract: This invention provides compounds of formula (I) or its pharmacologically acceptable salt or solvate, wherein A represents aryl or a monocyclic or bicyclic heterocyclic group, R1 represents a halide, nitro, substituted C1-6 alkyl, optionally substituted amino, C1-6 alkyloxycarbonyl, optionally substituted aryl, a heterocyclic group, or heterocyclic carbonyl, R2 represents a hydrogen atom or C1-6 alkyl, R3 represents C1-6 alkyl, all of R4, R5, and R6 represent a hydrogen atom, R7 represents C1-6 alkyl, m is 1 or 2, and n is 1. The compounds are novel lincomycin derivatives having a potent activity against resistant pneumococci. The compounds can be used as an antimicrobial agent and are useful for preventing or treating bacterial infectious diseases.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 18, 2009
    Inventors: Eijirou Umemura, Yoshinari Wakiyama, Kazutaka Ueda, Kou Kumura, Satomi Masaki, Takashi Watanabe, Mikio Yamamoto, Chizuko Kaji, Keiichi Ajito