Patents by Inventor Yoshinori Ikeura

Yoshinori Ikeura 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).

  • Patent number: 11401264
    Abstract: The present invention provides a heterocyclic compound having an activity to promote the maturation of a cardiomyocyte. A compound represented by the formula (I): wherein each symbol is as defined in the description, or a salt thereof has an activity to promote the maturation of a cardiomyocyte, and is useful as a cardiomyocyte maturation promoter.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: August 2, 2022
    Assignee: Orizuru Therapeutics, Inc.
    Inventors: Yoshinori Yoshida, Kenji Miki, Akira Kaieda, Shigeru Kondo, Hiroshi Nara, Yoshinori Ikeura
  • Publication number: 20210024512
    Abstract: The present invention provides a heterocyclic compound having an activity to promote the maturation of a cardiomyocyte. A compound represented by the formula (I): wherein each symbol is as defined in the description, or a salt thereof has an activity to promote the maturation of a cardiomyocyte, and is useful as a cardiomyocyte maturation promoter.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 28, 2021
    Applicants: Kyoto University, Takeda Pharmaceutical Company Limited
    Inventors: Yoshinori YOSHIDA, Kenji MIKI, Akira KAIEDA, Shigeru KONDO, Hiroshi NARA, Yoshinori IKEURA
  • Patent number: 8470816
    Abstract: The present invention relates to a compound represented by the formula wherein ring A is a nitrogen-containing heterocycle optionally further having substituent(s), ring B is an aromatic ring optionally having substituent(s), ring C is a cyclic group optionally having substituent(s), R1 is a hydrogen atom, a hydrocarbon group optionally having substituent(s), an acyl group, a heterocyclic group optionally having substituent(s) or an amino group optionally having substituent(s), R2 is an optionally halogenated C1-6 alkyl group, m and n are each an integer of 0 to 5, m+n is an integer of 2 to 5, and is a single bond or a double bond, or a salt thereof and the like. Since the compound has a superior tachykinin receptor antagonistic action, and is useful as an agent for the prophylaxis or treatment of various diseases such as lower urinary tract diseases, gastrointestinal diseases, central nervous system diseases and the like.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: June 25, 2013
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yoshinori Ikeura, Junya Shirai, Hideyuki Sugiyama, Yuji Nishikimi, Taku Kamei, Nobuki Sakauchi
  • Patent number: 7622487
    Abstract: The present invention provides a compound represented by the formula: wherein Ar is an aryl group, an aralkyl group or an aromatic heterocyclic group, each of which may be substituted, R1 is a hydrogen atom, an optionally substituted hydrocarbon group, an acyl group or an optionally substituted heterocyclic group, X is an oxygen atom or an optionally substituted imino group, Z is an optionally substituted methylene group, Ring A is an optionally further substituted piperidine ring, and Ring B is an optionally substituted aromatic ring, provided that when Z is a methylene group substituted with an oxo group, R1 is not a methyl group, and when Z is a methylene group substituted with a methyl group, Ring B is a substituted aromatic ring, or a salt thereof, which is a novel piperidine derivative having excellent antagonistic action for a tachykinin receptor and useful as a medicament, particularly an agent for preventing and/or treating urinary frequency and/or urinary incontinence.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: November 24, 2009
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yoshinori Ikeura, Tadatoshi Hashimoto, Naoki Tarui, Junya Shirai
  • Publication number: 20090186874
    Abstract: The present invention relates to a compound represented by the formula wherein ring A is a nitrogen-containing heterocycle optionally further having substituent(s), ring B and ring C are each an aromatic ring optionally having substituent(s), R1 is a hydrogen atom, a hydrocarbon group optionally having substituent(s), an acyl group or a heterocyclic group optionally having substituent(s), Z is an optionally halogenated C1-6 alkyl group, Y is a methylene group optionally having substituent(s), m and n are each an integer of 0 to 5, m+n is an integer of 2 to 5, and is a single bond or a double bond, or a salt thereof. The compound of the present invention has a superior tachykinin receptor antagonistic action, particularly an SP receptor antagonistic action, and is useful as a pharmaceutical agent, for example, a tachykinin receptor antagonist, an agent for the prophylaxis or treatment of an abnormality of lower urinary tract functions, a digestive organ disease or a central nerve disease, and the like.
    Type: Application
    Filed: January 13, 2005
    Publication date: July 23, 2009
    Inventors: Yoshinori Ikeura, Junya Shirai
  • Publication number: 20090156572
    Abstract: The present invention relates to a compound represented by the formula wherein ring A is a nitrogen-containing heterocycle optionally further having substituent(s), ring B is an aromatic ring optionally having substituent(s), ring C is a cyclic group optionally having substituent(s), R1 is a hydrogen atom, a hydrocarbon group optionally having substituent(s), an acyl group, a heterocyclic group optionally having substituent(s) or an amino group optionally having substituent(s), R2 is an optionally halogenated C1-6 alkyl group, m and n are each an integer of 0 to 5, m+n is an integer of 2 to 5, and is a single bond or a double bond, or a salt thereof and the like. Since the compound has a superior tachykinin receptor antagonistic action, and is useful as an agent for the prophylaxis or treatment of various diseases such as lower urinary tract diseases, gastrointestinal diseases, central nervous system diseases and the like.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 18, 2009
    Inventors: Yoshinori Ikeura, Junya Shirai, Hideyuki Sugiyama, Yuji Nishikimi, Taku Kamei, Nobuki Sakauchi
  • Publication number: 20070149570
    Abstract: The present invention relates to a compound represented by the formula: wherein Ar is a phenyl group optionally having substituent(s), R1 is a hydrogen atom, a hydrocarbon group optionally having substituent(s), an acyl group or a heterocyclic group optionally having substituent(s), R2 is a hydrogen atom, a C1-6 alkyl group optionally having substituent(s) or a C3-6 cycloalkyl group optionally having substituent(s), Z is a methylene group optionally having a C1-6 alkyl group, ring A is a piperidine ring optionally further having substituent(s), ring B and ring C are benzene rings optionally further having substituent(s), and R2 optionally form a ring together with the adjacent substituent on the ring B, except the compounds represented by the formula: or a salt thereof.
    Type: Application
    Filed: February 2, 2007
    Publication date: June 28, 2007
    Inventors: Yoshinori Ikeura, Junya Shirai, Takeshi Yoshikawa, Nobuki Sakauchi
  • Publication number: 20060241145
    Abstract: The present invention provides a piperidine derivative having antagonistic action for tachykinin receptors and the like, a crystal thereof, and an agent for the prophylaxis or treatment of diseases including lower urinary tract disease and the like, which contains the derivative. Specifically, the present invention provides an optically active compound represented by the formula (I): wherein each symbol is as defined in the specification, and a salt thereof.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 26, 2006
    Inventors: Yoshinori Ikeura, Tadatoshi Hashimoto, Junya Shirai, Yoshikawa Takeshi, Hiroshi Nakatani, Mitsuhisa Yamano, Masahiro Mizuno, Hiroyuki Irie
  • Publication number: 20060167052
    Abstract: The present invention provides a compound represented by the formula: wherein Ar is an aryl group, an aralkyl group or an aromatic heterocyclic group, each of which may be substituted, R1 is a hydrogen atom, an optionally substituted hydrocarbon group, an acyl group or an optionally substituted heterocyclic group, X is an oxygen atom or an optionally lo substituted imino group, Z is an optionally substituted methylene group, Ring A is an optionally further substituted piperidine ring, and Ring B is an optionally substituted aromatic ring, provided that when Z is a methylene group substituted with an oxo group, R1 is not a methyl group, and 15 when Z is a methylene group substituted with a methyl group, Ring B is a substituted aromatic ring, or a salt thereof, which is a novel piperidine derivative having excellent antagonistic action for a tachykinin receptor and useful as a medicament, particularly an agent for preventing and/or treating urinary frequency and/or urinary incontinence.
    Type: Application
    Filed: May 29, 2003
    Publication date: July 27, 2006
    Inventors: Yoshinori Ikeura, Tadatoshi Hashimoto, Naoki Tarui, Junya Shirai, Masayuki Yamashita
  • Publication number: 20060142337
    Abstract: The present invention provides a compound represented by the formula: wherein Ar is an aryl group optionally having substituents, R is a C1-6 alkyl group, R1 is a hydrogen atom, a hydrocarbon group optionally having substituents, an acyl group or a heterocyclic group optionally having substituents, X is an oxygen atom or an imino group optionally having substituents, ring A is a piperidine ring optionally further having substituents, and ring B is a benzene ring having substituents, or a salt thereof, and an agent for the prophylaxis or treatment of lower urinary tract abnormality and the like, which contains the compound.
    Type: Application
    Filed: February 22, 2006
    Publication date: June 29, 2006
    Inventors: Yoshinori Ikeura, Tadatoshi Hashimoto, Haruyuki Nishida, Junya Shirai, Nobuki Sakauchi
  • Publication number: 20050038072
    Abstract: A novel compound represented by the formula (I): wherein rings A and B each represents an optionally substituted aromatic ring, or rings A and B may be bonded to each other through linking between bonds or substituents thereof to form a ring; ring C represents a nitrogenous saturated heterocycle optionally having one or more substituents besides the oxo (provided that 2,3-dioxopyrrolidine ring is excluded); R1 represents hydrogen, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group; and indicates a single bond or a double bond. It has high antagonistic activity against a tachykinin receptor, especially an SP receptor.
    Type: Application
    Filed: December 26, 2002
    Publication date: February 17, 2005
    Inventors: Masayoshi Yamaoka, Yoshinori Ikeura, Tadatoshi Hashimoto, Naoki Tarui
  • Patent number: 6489315
    Abstract: Novel compounds of the following general formula or salts thereof. wherein Ring M is a heterocyclic ring having —N═C<, —CO—N< or —CS—N< as the partial structure —X{overscore (— — — — — — — — —)} Y<; Ra and Rb are bonded to each other to form Ring A, or they are the same or different and represent, independently, a hydrogen atom or a substituent on the Ring M; Ring A and Ring B represent, independently, an optionally substituted homocyclic or heterocyclic ring, and at least one of them is optionally substituted heterocyclic ring; Rng C is optionally substituted homocyclic or heterocyclic ring; Rng Z is an optionally substituted ring; and n represents an integer of from 1 to 6, or a salt thereof, which has an excellent tachykinin receptor antagonistic effect, and their production, and pharmaceutical compositions.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: December 3, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Takenori Ishimaru, Takayuki Doi, Yoshinori Ikeura, Chiharu Kimura
  • Publication number: 20020132817
    Abstract: A compound represented by the formula: 1
    Type: Application
    Filed: March 13, 2002
    Publication date: September 19, 2002
    Inventors: Hideaki Natsugari, Takayuki Doi, Yoshinori Ikeura
  • Patent number: 6147071
    Abstract: Novel compounds of the following general formula or salts thereof. ##STR1## wherein Ring M is a heterocyclic ring having --N.dbd.CC<, --CO--N< or --CS--N< as the partial structure --X . . . . . Y<; R.sup.a and R.sup.b are bonded to each other to form Ring A, or they are the same or different and represent, independently, a hydrogen atom or a substituent on the Ring M; Ring A and Ring B represent, independently, an optionally substituted homocyclic or heterocyclic ring, and at least one of them is optionally substituted heterocyclic ring; Ring C is optionally substituted homocyclic or heterocyclic ring; Ring Z is an optionally substituted ring; and n represents an integer of from 1 to 6, or a salt thereof, which has an excellent tachykinin receptor antagonistic effect, and their production, and pharmaceutical compositions.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: November 14, 2000
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Takenori Ishimaru, Takayuki Doi, Yoshinori Ikeura, Chiharu Kimura
  • Patent number: 5929107
    Abstract: Novel compound represented by the formula: ##STR1## wherein ring A, ring B and ring C each stands for an optionally substituted benzene ring; X stands for --NR-- wherein R stands for hydrogen atom or an optionally substituted hydrocarbon group, --O-- or --S--; Y stands for --(CH.sub.2)n-- wherein n denotes 1 or 2 or --NH--; and R.sup.a stands for a hydrogen atom or an optionally substituted hydrocarbon group, provided that when ring C is unsubstituted or substituted only at para-position, ring B is substituted at least at ortho-position or a salt thereof which have an excellent acyl-CoA: cholesterol acyltransferase inhibiting action and cholesterol-lowering activity, their production and medicinal use.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: July 27, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Yasuo Sugiyama, Yoshinori Ikeura
  • Patent number: 5786352
    Abstract: Novel compounds of the following general formula or salts thereof. ##STR1## wherein Ring M is a heterocyclic ring having --N.dbd.C<, --CO--N< or --CS--N< as the partial structure --X . . . Y<; R.sup.a and R.sup.b are bonded to each other to form Ring A, or they are the same or different and represent, independently, a hydrogen atom or a substituent on the Ring M; Ring A and Ring B represent, independently, an optionally substituted homocyclic or heterocyclic ring, and at least one of them is optionally substituted heterocyclic ring; Ring C is optionally substituted homocyclic or heterocyclic ring; Ring Z is an optionally substituted ring; and n represents an integer of from 1 to 6, or a salt thereof, which has an excellent tachykinin receptor antagonistic effect, and their production, and pharmaceutical compositions.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: July 28, 1998
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Takenori Ishimaru, Takayuki Doi, Yoshinori Ikeura, Chiharu Kimura
  • Patent number: 5770590
    Abstract: Novel compounds of the following general formula or salts thereof. ##STR1## wherein Ring M is a heterocyclic ring having --N.dbd.C<, --CO--N< or --CS--N< as the partial structure --X . . . Y<; R.sup.a and R.sup.b are bonded to each other to form Ring A, or they are the same or different and represent, independently, a hydrogen atom or a substituent on the Ring M; Ring A and Ring B represent, independently, an optionally substituted homocyclic or heterocyclic ring, and at least one of them is optionally substituted heterocyclic ring; Rng C is optionally substituted homocyclic or heterocyclic ring; Rng Z is an optionally substituted ring; and n represents an integer of from 1 to 6, or a salt thereof, which has anexcellent tachykinin receptor antagonistic effect, and their production, and pharmaceutical compositions.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: June 23, 1998
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Takenori Ishimaru, Takayuki Doi, Yoshinori Ikeura, Chiharu Kimura, Naoki Tarui
  • Patent number: 5492929
    Abstract: Novel compound represented by the formula: ##STR1## wherein ring A, ring B and ring C each stands for an optionally substituted benzene ring; X stands for --NR-- wherein R stands for hydrogen atom or an optionally substituted hydrocarbon group, --O-- or --S--; Y stands for --(CH.sub.2)n-- wherein n denotes 1 or 2 or --NH--; and R.sup.a stands for a hydrogen atom or an optionally substituted hydrocarbon group, provided that when ring C is unsubstituted or substituted only at para-position, ring B is substituted at least at ortho-position or a salt thereof which have an excellent acyl-CoA: cholesterol acyltransferase inhibiting action and cholesterol-lowering activity, their production and medicinal use.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: February 20, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hideaki Natsugari, Yasuo Sugiyama, Yoshinori Ikeura