Patents by Inventor Shiro Takekawa

Shiro Takekawa 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: 20220016215
    Abstract: The present disclosure provides GIF receptor agonist peptide compounds having an activating action on GIF receptors and use of the GIF receptor agonist peptide as a medicament for the treatment and/or prevention of emesis. Specifically, a GIF receptor agonist peptide containing a sequence represented by the formula (I) or a salt thereof, and a medicament comprising the same are N provided. Formula (I) P1-A1-A2-A3-A4-A5-A6-A7-A8-A9-A10-A11-A12-A13-A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25-A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37-A38-A39-A40-A41-A42-P2, wherein each symbol is as defined herein, with the proviso that the GIF receptor agonist peptide is not native human GIF having an amino acid sequence as set forth in SEQ ID NO: 1.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 20, 2022
    Inventors: Shiro TAKEKAWA, Tomoko MORIMOTO, Minoru MARUYAMA, Hiroaki NAGAI, Akira TANAKA, Hisanori MATSUI, Atsuko OBINATA, Derek Cecil COLE, Mack FLINSPACH, Nick SCORAH, Abhijit Suresh BHAT
  • Patent number: 11174301
    Abstract: The present invention provides a novel peptide compound having an activating action on GIP receptors and use of the peptide compound as a medicament. Specifically, a peptide containing a sequence represented by the formula (I) or a salt thereof and a medicament comprising the same are provided. P1-Tyr-A2-Glu-Gly-Thr-A6-A7-A8-A9-A10-A11-A12-A13-A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25-A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37-A38-A39-A40-P2?? (I) wherein each symbol is as defined herein.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: November 16, 2021
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Taiji Asami, Naoki Nishizawa, Ayumu Niida, Yoko Kanematsu, Mari Adachi, Shiro Takekawa, Tomoko Morimoto
  • Publication number: 20200140505
    Abstract: The present invention provides a novel peptide compound having an activating action on GIP receptors and use of the peptide compound as a medicament. Specifically, a peptide containing a sequence represented by the formula (I) or a salt thereof and a medicament comprising the same are provided. P1-Tyr-A2-Glu-Gly-Thr-A6-A7-A8-A9-A10-A11-A12-A13-A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25-A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37-A38-A39-A40-P2?? (I) wherein each symbol is as defined herein.
    Type: Application
    Filed: August 29, 2019
    Publication date: May 7, 2020
    Applicant: TAKEDA PHARMACEUTICAL COMPANY LIMTED
    Inventors: TAIJI ASAMI, NAOKI NISHIZAWA, AYUMU NIIDA, YOKO KANEMATSU, MARI ADACHI, SHIRO TAKEKAWA, TOMOKO MORIMOTO
  • Publication number: 20190390169
    Abstract: The present invention relates to a method for producing pancreatic progenitor cells from pluripotent stem cells. More specifically, the present invention relates to a method for producing pancreatic progenitor cells, comprising causing the action of a factor having the inhibitory activity for cyclin-dependent kinase 8 and/or cyclin-dependent kinase 19 (hereinafter, also abbreviated to CDK8/19).
    Type: Application
    Filed: March 2, 2018
    Publication date: December 26, 2019
    Applicants: Kyoto University, Takeda Pharmaceutical Company Limited
    Inventors: Kenji OSAFUNE, Taro TOYODA, Shiro TAKEKAWA, Goshi NAKAMURA, Ryo ITO
  • Patent number: 10435445
    Abstract: The present invention provides a novel peptide compound having an activating action on GIP receptors and use of the peptide compound as a medicament. Specifically, a peptide containing a sequence represented by the formula (I) or a salt thereof and a medicament comprising the same are provided. (I) P1-Tyr-A2-Glu-Gly-Thr-A6-A7-A8-A9-A10-A11-A12-A13- A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25- A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37- A38-A39-A40-P2 wherein each symbol is as defined herein.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 8, 2019
    Assignee: TAKEDA PHARMACEUTICAL COMPANY LIMITED
    Inventors: Taiji Asami, Naoki Nishizawa, Ayumu Niida, Yoko Kanematsu, Mari Adachi, Shiro Takekawa, Tomoko Morimoto
  • Publication number: 20180298070
    Abstract: The present invention provides a novel peptide compound having an activating action on GIP receptors and use of the peptide compound as a medicament. Specifically, a peptide containing a sequence represented by the formula (I) or a salt thereof and a medicament comprising the same are provided. P1-Tyr-A2-Glu-Gly-Thr-A6-A7-A8-A9-A10-A11-A12-A13-A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25-A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37-A38-A39-A40-P2 ??(I) wherein each symbol is as defined herein.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 18, 2018
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Taiji Asami, Naoki Nishizawa, Ayumu Niida, Yoko Kanematsu, Mari Adachi, Shiro Takekawa, Tomoko Morimoto
  • Patent number: 7601868
    Abstract: The present invention provides a compound represented by the formula or salts thereof, wherein, Ar1, Ar, R, R1, R2, Ra1, Ra2, Ra3, Ra4 and Y have meanings described in the specification, having a melanin-concentrating hormone antagonistic, action and useful as an agent for the prophylaxis or treatment of obesity and the like.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: October 13, 2009
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yuji Ishihara, Makoto Kamata, Shiro Takekawa
  • Publication number: 20070173498
    Abstract: A melanin-concentrating hormone antagonist which comprises a compound of the formula: wherein Ar1 is a cyclic group which may have substituents; X is a spacer having a main chain of 1 to 6 atoms; Y is a bond or a spacer having a main chain of 1 to 6 atoms; Ar is a monocyclic aromatic ring which may be condensed with a 4 to 8 membered non-aromatic ring, and may have further substituents; R1 and R2 are independently hydrogen atom or a hydrocarbon group which may have substituents; R1 and R2, together with the adjacent nitrogen atom, may form a nitrogen-containing hetero ring which may have substituents; R2 may form a spiro ring together with Ar; or R2, together with the adjacent nitrogen atom and Y, may form a nitrogen-containing hetero ring which may have substituents; or a salt thereof; which is useful as an agent for preventing or treating obesity, etc.
    Type: Application
    Filed: September 12, 2005
    Publication date: July 26, 2007
    Inventors: Kaneyoshi Kato, Jun Terauchi, Masaaki Mori, Nobuhiro Suzuki, Yukio Shimomura, Shiro Takekawa, Yuji Ishihara
  • Patent number: 7229986
    Abstract: A melanin-concentrating hormone antagonist comprising a compound of the formula: wherein R is hydrogen atom or a cyclic group which may be substituted; X is a bond or a spacer having a main chain of 1 to 10 atoms; Y is a spacer having a main chain of 1 to 6 atoms; ring A is benzene ring which may be further substituted; ring B is a 5- to 9-membered nitrogen-containing non-aromatic heterocyclic ring which may be further substituted; R1 and R2 are the same or different and are hydrogen atom, a hydrocarbon group which may be substituted or a heterocyclic group which may be substituted; or R1 and R2, together with the adjacent nitrogen atom, may form a nitrogen-containing heterocyclic ring which may be substituted; or R2, together with the adjacent nitrogen atom and Y, may form a nitrogen-containing heterocyclic ring which may be substituted; or a salt thereof is useful as a preventive or therapeutic agent for obesity, etc.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: June 12, 2007
    Assignee: Takeda Pharmaceutical Company Ltd.
    Inventors: Yuji Ishihara, Jun Terauchi, Nobuhiro Suzuki, Shiro Takekawa, Kazuyoshi Aso
  • Patent number: 7183415
    Abstract: A compound, which has a melanin-concentrating hormone antagonistic action and useful as an agent for preventing or treating obesity, and which is represented by the formula: wherein Ar is a cyclic group optionally having substituent(s); X is a bond or a spacer having a main chain of 1 to 6 atoms; R1 and R2 are the same or different and each is a hydrogen atom or a hydrocarbon group optionally having substituent(s), or R1 and R2 may form, together with the adjacent nitrogen atom, a nitrogen-containing heterocycle optionally having substituent(s); Y is a divalent hydrocarbon group optionally having substituent(s) (except CO); R3 is a hydrogen atom or a hydrocarbon group optionally having substituent(s); and ring A and ring B may further have substituents, and when ring B further has a substituent, the substituent may be linked to R1 to form a ring, or a salt thereof, or a prodrug thereof, is provided.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: February 27, 2007
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yuji Ishihara, Makoto Kamata, Shiro Takekawa, Nobuhiro Suzuki, Koki Kato
  • Publication number: 20060223826
    Abstract: The present invention provide a compound of the formula (I) wherein ring A represents an aromatic ring optionally having substituents; B, Y and Ya are the same or different and each represents a bond, etc.; R1 and R2 are the same or different and each represents a hydrogen atom, etc.; R3 represents a hydrogen atom, etc.; R4 and R5 are the same or different and each represents a hydrogen, etc.; R6 represents an indolyl group optionally having substituents; and Z and Za are the same or different and each represents a hydrogen atom, etc.; or a salt thereof or a prodrug thereof, having a somatostatin receptor binding inhibition activity and is useful for preventing and/or treating diseases associated with somatostatin.
    Type: Application
    Filed: November 18, 2003
    Publication date: October 5, 2006
    Applicant: Takeda Pharmaceutical Company Limited Intellectual Property Department
    Inventors: Hidenori Abe, Shinichiro Matsunaga, Shiro Takekawa, Masanori Watanabe
  • Patent number: 7115750
    Abstract: A melanin-concentrating hormone antagonist which comprises a compound of the formula: wherein Ar1 is a cyclic group which may have substituents; X is a spacer having a main chain of 1 to 6 atoms; Y is a bond or a spacer having a main chain of 1 to 6 atoms; Ar is a monocyclic aromatic ring which may be condensed with a 4 to 8 membered non-aromatic ring, and may have further substituents; R1 and R2 are independently hydrogen atom or a hydrocarbon group which may have substituents; R1 and R2, together with the adjacent nitrogen atom, may form a nitrogen-containing hetero ring which may have substituents; R2 may form a spiro ring together with Ar; or R2, together with the adjacent nitrogen atom and Y, may form a nitrogen-containing hetero ring which may have substituents; or a salt thereof; which is useful as an agent for preventing or treating obesity, etc.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: October 3, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kaneyoshi Kato, Jun Terauchi, Masaaki Mori, Nobuhiro Suzuki, Yukio Shimomura, Shiro Takekawa, Yuji Ishihara
  • Patent number: 7091247
    Abstract: A novel biphenyl compound having GPR 14 antagonistic activity. It is a compound represented by the formula (I): wherein R1 represents hydrogen, etc.; X represents 1 to 12 spacers; A represents amino, etc., R2 and R3 each represents a hydrocarbon group, etc.; and rings B and C each represents an optionally further substituted benzene ring, or a salt thereof.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: August 15, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Naoki Tarui, Takashi Santo, Hiroyuki Watanabe, Kazuyoshi Aso, Tetsuo Miwa, Shiro Takekawa
  • Publication number: 20060128690
    Abstract: The present invention provides a compound represented by the formula wherein Ar1 is a cyclic group optionally having substituent(s); R is a hydrogen atom, an optionally halogenated C1-6 alkyl, a phenyl optionally having substituent(s) or a pyridyl optionally having substituent(s); Ra1, Ra2, Ra3 and Ra4 are the same or different and each is a hydrogen atom, an optionally halogenated C1-6 alkyl or the like; Ar is a monocyclic aromatic ring optionally having substituent(s); Y is an optionally halogenated alkylene group; and R1 and R2 are (1) the same or different and each is a hydrogen atom or a C1-6 alkyl, (2) R1 and R2 form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, or (3) R1 and Y form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, and R2 is a hydrogen atom or a C1-6 alkyl; provided that when the nitrogen-containing heterocycle formed by R1 and R2 together with the adjacent
    Type: Application
    Filed: February 12, 2004
    Publication date: June 15, 2006
    Inventors: Yuji Ishihara, Makoto Kamata, Shiro Takekawa
  • Patent number: 6991908
    Abstract: The present invention provides a method for screening a compound or its salt that alters the binding property between MCH or its salt and SLC-1 or its salt, characterized by using MCH or its derivative or a salt thereof and SLC-1 or its salt is useful for screening an SLC-1 agonist which can be used not only as an appetite (eating) promoting agent but also as a prophylactic/therapeutic agent for weak pains, atonic bleeding, before and after expulsion, subinvolution of uterus, cesarean section, induced abortion, galactostasis, and the like, and an SLC-1 antagonist which can be used not only as an antiobestic agents (drug), an appetite (eating) modulator, and the like, but also as a prophylactic/therapeutic agent for hyperstimulation, ankylosing uterine contractions, fetal distress, uterine rupture, cervical laceration, preterm delivery, Prader-Wili syndrome and the like.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: January 31, 2006
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Masaaki Mori, Yukio Shimomura, Shiro Takekawa, Tsukasa Sugo, Yoshihiro Ishibashi, Chieko Kitada, Nobuhiro Suzuki
  • Publication number: 20050245571
    Abstract: The present invention provide a compound of the formula: wherein X and X? are the same or different and each represents a hydrogen atom, etc.; R1 and R2 are the same or different and each represents a hydrogen atom, etc.; R3 represents a hydrocarbon group optionally having substituents, etc.; R4 represents a hydrogen atom, etc.; Y and Ya are the same or different and each represents a bond or a spacer having a main chain of 1 to 8 atoms; Z and Za are the same or different and each represents a hydrogen atom, etc.; or a salt thereof or a prodrug thereof, having a somatostatin receptor binding inhibitory activity and is useful for preventing and/or treating diseases associated with somatostatin.
    Type: Application
    Filed: October 17, 2002
    Publication date: November 3, 2005
    Inventors: Hidenori Abe, Shizuo Kasai, Shiro Takekawa, Masanori Watanabe
  • Publication number: 20050209213
    Abstract: A compound, which has a melanin-concentrating hormone antagonistic action and useful as an agent for preventing or treating obesity, and which is represented by the formula: wherein Ar is a cyclic group optionally having substituent(s); X is a bond or a spacer having a main chain of 1 to 6 atoms; R1 and R2 are the same or different and each is a hydrogen atom or a hydrocarbon group optionally having substituent(s), or R1 and R2 may form, together with the adjacent nitrogen atom, a nitrogen-containing heterocycle optionally having substituent(s); Y is a divalent hydrocarbon group optionally having substituent(s) (except CO); R3 is a hydrogen atom or a hydrocarbon group optionally having substituent(s); and ring A and ring B may further have substituents, and when ring B further has a substituent, the substituent may be linked to R1 to form a ring, or a salt thereof, or a prodrug thereof, is provided.
    Type: Application
    Filed: October 24, 2002
    Publication date: September 22, 2005
    Applicant: Takeda Chemical Industries, Ltd.
    Inventors: Yuji Ishihara, Makoto Kamata, Shiro Takekawa, Nobuhiro Suzuki, Koki Kato
  • Patent number: 6930185
    Abstract: A melanin-concentrating hormone antagonist comprising a compound of the formula (I): wherein Ar1 is a cyclic group which may be substituted; X and Y are the same or different and are a spacer having a main chain of 1 to 6 atoms; Ar is a condensed polycyclic aromatic ring which may be substituted; R1 and R2 are the same or different and are hydrogen atom or a hydrocarbon group which may be substituted; or R1 and R2, together with the adjacent nitrogen atom, may form a nitrogen-containing heterocyclic ring which may be substituted; or R2, together with the adjacent nitrogen atom and Y, may form a nitrogen-containing heterocyclic ring which may be substituted; or R2, together with the adjacent nitrogen atom, Y and Ar, may form a condensed ring; or a salt thereof is useful as an agent for preventing or treating obesity, etc.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: August 16, 2005
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yuji Ishihara, Nobuhiro Suzuki, Shiro Takekawa
  • Publication number: 20040106792
    Abstract: A novel biphenyl compound having GPR 14 antagonistic activity.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 3, 2004
    Inventors: Naoki Tauri, Takashi Santo, Hiroyuki Watanabe, Kazuyoshi Aso, Tetsuo Miwa, Shiro Takekawa
  • Publication number: 20040077628
    Abstract: A melanin-concentrating hormone antagonist comprising a compound of the formula (I): 1
    Type: Application
    Filed: October 24, 2002
    Publication date: April 22, 2004
    Inventors: Yuji Ishihara, Nobuhiro Suzuki, Shiro Takekawa