Patents by Inventor Taku Kamei

Taku Kamei 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: 20150141406
    Abstract: The present invention provides a compound having a superior JAK inhibitory action, which is useful as an agent for the prophylaxis or treatment of autoimmune diseases (rheumatoid arthritis, psoriasis, inflammatory bowel disease, Sjogren's syndrome, Behcet's disease, multiple sclerosis, systemic lupus erythematosus, etc.), cancer (leukemia, uterine leiomyosarcoma, prostate cancer, multiple myeloma, cachexia, myelofibrosis, etc.) and the like, or a salt thereof. The present invention relates to a compound represented by the formula wherein each symbol is as defined in the specification, or a salt thereof.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 21, 2015
    Inventors: Hiroshi Nara, Masaki Daini, Akira Kaieda, Taku Kamei, Toshihiro Imaeda, Fumiaki Kikuchi
  • Publication number: 20150094296
    Abstract: The present invention provides an agent for the prophylaxis or treatment of autoimmune diseases (e.g., psoriasis, rheumatoid arthritis, inflammatory bowel disease, Sjogren's syndrome, Behcet's disease, multiple sclerosis, systemic lupus erythematosus etc.) and the like, which has a superior Tyk2 inhibitory action. The present invention relates to a compound represented by the formula wherein each symbol is as defined in the specification, or a salt thereof.
    Type: Application
    Filed: March 27, 2013
    Publication date: April 2, 2015
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Tetsuya Tsukamoto, Yusuke Ohba, Takafumi Yukawa, Hiroyuki Nagamiya, Taku Kamei, Norihito Tokunaga, Morihisa Saitoh, Atsutoshi Okabe
  • Patent number: 8722662
    Abstract: Provided is a compound having a monoamine reuptake inhibitory activity, which is represented by the formula (I) wherein ring A is an optionally substituted 6-membered aromatic ring, ring B is the substituents on ring A are optionally bonded to form, together with ring A, an optionally substituted 9- or 10-membered aromatic fused ring, and other symbols are as defined in the specification, or a salt thereof.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 13, 2014
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yuji Ishichi, Masami Yamada, Taku Kamei, Ikuo Fujimori, Yoshihisa Nakada, Tomoya Yukawa, Nobuki Sakauchi, Yusuke Ohba, Tetsuya Tsukamoto
  • Patent number: 8592454
    Abstract: The present invention relates to a compound represented by the formula wherein ring A is a nitrogen-containing heterocycle; ring B is an aromatic ring optionally having substituent(s); ring D is an aromatic ring optionally having substituent(s); L is a group represented by the formula R2, R3, R4a and R4b are each independently a hydrogen atom, an optionally halogenated C1-6 alkyl group or an optionally halogenated C3-6 cycloalkyl group, or R2 and R3 are optionally bonded via an alkylene chain or an alkenylene chain, or R4a and R4b are optionally bonded via an alkylene chain or an alkenylene chain; R1 is a hydrogen atom or a substituent; m and n are each independently an integer of 0 to 5; m+n is an integer of 2 to 5; and is a single bond or double bond, or a salt thereof; and the like.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: November 26, 2013
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Junya Shirai, Hideyuki Sugiyama, Taku Kamei, Hironobu Maezaki
  • Publication number: 20130267494
    Abstract: Provided is a compound having a monoamine reuptake inhibitory activity, which is represented by the formula (I) wherein ring A is an optionally substituted 6-membered aromatic ring, ring B is the substituents on ring A are optionally bonded to form, together with ring A, an optionally substituted 9- or 10-membered aromatic fused ring, and other symbols are as defined in the specification, or a salt thereof.
    Type: Application
    Filed: October 5, 2011
    Publication date: October 10, 2013
    Inventors: Yuji Ishichi, Masami Yamada, Taku Kamei, Ikuo Fujimori, Yoshihisa Nakada, Tomoya Yukawa, Nobuki Sakauchi, Yusuke Ohba, Tetsuya Tsukamoto
  • 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
  • Publication number: 20120088748
    Abstract: Provided is a compound having a monoamine reuptake inhibitory activity, which is represented by the formula (I) wherein ring A is an optionally substituted 6-membered aromatic ring, ring B is the substituents on ring A are optionally bonded to form, together with ring A, an optionally substituted 9- or 10-membered aromatic fused ring, and other symbols are as defined in the specification, or a salt thereof.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Inventors: Yuji Ishichi, Masami Yamada, Taku Kamei, Ikuo Fujimori, Yoshihisa Nakada, Tomoya Yukawa, Nobuki Sakauchi, Yusuke Ohba, Tetsuya Tsukamoto
  • Publication number: 20110178060
    Abstract: The present invention relates to a compound represented by the formula wherein ring A is a nitrogen-containing heterocycle; ring B is an aromatic ring optionally having substituent(s); ring D is an aromatic ring optionally having substituent(s); L is a group represented by the formula R2, R3, R4a and R4b are each independently a hydrogen atom, an optionally halogenated C1-6 alkyl group or an optionally halogenated C3-6 cycloalkyl group, or R2 and R3 are optionally bonded via an alkylene chain or an alkenylene chain, or R4a and R4b are optionally bonded via an alkylene chain or an alkenylene chain; R1 is a hydrogen atom or a substituent; m and n are each independently an integer of 0 to 5; m+n is an integer of 2 to 5; and is a single bond or double bond, or a salt thereof; and the like.
    Type: Application
    Filed: September 18, 2009
    Publication date: July 21, 2011
    Inventors: Junya Shirai, Hideyuki Sugiyama, Taku Kamei, Hironobu Maezaki
  • 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: 20080302674
    Abstract: A probe unit for identifying a target nucleotide region in a target nucleic acid, the unit being provided with an electrode, a probe bound to the electrode and recognizes the target nucleic acid, and a hole-transfer-inducing agent bound to the probe, wherein a nucleotide region corresponding to the target nucleotide region is located between the hole-transfer-inducing-agent-binding site and the electrode-binding end of the probe. A state of the target nucleotide region in the target nucleic acid can be identified by comparing electrochemical signal levels by energy-induced hole transfers before and after the hybridization of such a probe unit with the target nucleic acid.
    Type: Application
    Filed: December 21, 2005
    Publication date: December 11, 2008
    Applicant: KYOTO UNIVERSITY
    Inventors: Akimitsu Okamoto, Taku Kamei, Isao Saito