Patents by Inventor Tatsuya Zenkoh

Tatsuya Zenkoh 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: 8598355
    Abstract: [Problems] A compound, which is useful as an active ingredient of a pharmaceutical composition, for example, a pharmaceutical composition for treating chronic renal failure and/or diabetic nephropathy, is provided. [Solving Means] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic activity, and confirmed that the amide compound of the present invention has an EP4 receptor antagonistic activity, thereby completing the present invention. The amide compound of the present invention has an EP4 receptor antagonistic activity, and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating various EP4-related diseases, for example, chronic renal failure and/or diabetic nephropathy, and the like.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: December 3, 2013
    Assignee: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo, Susumu Watanuki, Michihito Kageyama
  • Patent number: 8273745
    Abstract: The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: September 25, 2012
    Assignee: Astellas Pharma Inc
    Inventors: Tadashi Terasaka, Tatsuya Zenkoh, Hisashi Hayashida, Hiroshi Matsuda, Junji Sato, Yoshimasa Imamura, Hiroshi Nagata, Norio Seki, Yoshiyuki Tenda, Mamoru Tasaki, Masahiro Takeda, Seiichiro Tabuchi, Minoru Yasuda, Kazunori Tsubaki
  • Patent number: 8211919
    Abstract: This invention relates to novel amide derivatives and salts thereof. More particularly, it relates to novel amide derivatives and salts thereof which act as a ROCK inhibitor, to a pharmaceutical composition comprising the same and to a method of using the same therapeutically in the treatment and/or prevention of ROCK-related disease.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: July 3, 2012
    Assignee: Astellas Pharma Inc.
    Inventors: Kouzo Sawada, Tatsuya Zenkoh, Takeshi Terasawa, Yoshimasa Imamura, Hiroki Fukudome, Satoru Kuroda, Jun Maeda, Junko Watanabe, Hiroshi Inami, Nobuaki Takeshita
  • Patent number: 8030489
    Abstract: Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy. The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention. The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: October 4, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Tatsuya Zenkoh, Eisuke Nozawa, Keisuke Matsuura, Ryushi Seo
  • Publication number: 20110144153
    Abstract: [Problems] A compound, which is useful as an active ingredient of a pharmaceutical composition, for example, a pharmaceutical composition for treating chronic renal failure and/or diabetic nephropathy, is provided. [Solving Means] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic activity, and confirmed that the amide compound of the present invention has an EP4 receptor antagonistic activity, thereby completing the present invention. The amide compound of the present invention has an EP4 receptor antagonistic activity, and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating various EP4-related diseases, for example, chronic renal failure and/or diabetic nephropathy, and the like.
    Type: Application
    Filed: May 12, 2009
    Publication date: June 16, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo, Susumu Watanuki, Michihito Kageyama
  • Publication number: 20110028463
    Abstract: [Problems] To provide a compound that is useful as an agent for treating chronic renal insufficiency or an agent for treating diabetic nephropathy. [Means for Solving Problems] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic action, and as a result, they have found that various amide derivatives having a carboxylic group or an equivalent thereof exhibit an excellent EP4 receptor antagonistic action, thereby completing the present invention. Since the compound of the present invention has an excellent EP4 receptor antagonistic action, it is useful as an agent for preventing and/or treating chronic renal insufficiency or diabetic nephropathy.
    Type: Application
    Filed: July 2, 2008
    Publication date: February 3, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Eisuke Nozawa, Ryotaro Ibuka, Kazuhiro Ikegai, Keisuke Matsuura, Tatsuya Zenkoh, Ryushi Seo
  • Publication number: 20100216803
    Abstract: Provided is a compound which is useful as a therapeutic agent for chronic renal insufficiency and a therapeutic agent for diabetic nephropathy. The present inventors have made extensive studies on an ornithine derivative having an antagonistic action against an EP4 receptor, and as a result, they have found that by introducing cycloalkanediyl at a C terminal of the ornithine part of the compound of the present invention, the physicochemical properties such as solubility, and the like can be improved, thereby giving further preferred properties as a pharmaceutical. Therefore, they have completed the present invention. The compound of the present invention exhibits a good antagonistic action against an EP4 receptor, and thus, it is useful as a therapeutic agent for chronic renal insufficiency and diabetic nephropathy.
    Type: Application
    Filed: March 25, 2008
    Publication date: August 26, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Tatsuya Zenkoh, Eisuke Nozawa, Keisuke Matsuura, Ryushi Seo
  • Publication number: 20100009991
    Abstract: The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like.
    Type: Application
    Filed: December 13, 2007
    Publication date: January 14, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Tadashi Terasaka, Tatsuya Zenkoh, Hisashi Hayashida, Hiroshi Matsuda, Junji Sato, Yoshimasa Imamura, Hiroshi Nagata, Norio Seki, Yoshiyuki Tenda, Mamoru Tasaki, Masahiro Takeda, Seiichiro Tabuchi, Minoru Yasuda, Kazunori Tsubaki
  • Publication number: 20090105231
    Abstract: This invention relates to novel amide derivatives and salts thereof. More particularly, it relates to novel amide derivatives and salts thereof which act as a ROCK inhibitor, to a pharmaceutical composition comprising the same and to a method of using the same therapeutically in the treatment and/or prevention of ROCK-related disease.
    Type: Application
    Filed: August 29, 2006
    Publication date: April 23, 2009
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Kouzo Sawada, Tatsuya Zenkoh, Takeshi Terasawa, Yoshimasa Imamura, Hiroki Fukudome, Satoru Kuroda, Jun Maeda, Junko Watanabe, Hiroshi Inami, Nobuaki Takeshita
  • Patent number: 6316482
    Abstract: This invention relates to new benzamide derivatives having a vasopressin antagonistic activity, etc. and represented by general formula (I): wherein R1 is aryl optionally substituted with lower alkoxy, etc., R2 is lower alkyl, etc., R3 is hydrogen, etc., A is NH, etc., E is etc., X is —CH═CH—, —CH═N—, or S, and Y is a condensed heterocyclic group, etc., and pharmaceutically acceptable salts thereof, to processes for preparation thereof and to a pharmaceutical composition comprising the same.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: November 13, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Setoi, Takehiko Ohkawa, Tatsuya Zenkoh, Hitoshi Sawada, Yuki Sawada, Teruo Oku
  • Patent number: 6211242
    Abstract: This invention relates to new benzamide derivatives having a vasopressin antagonistic activity, etc. and represented by the general formula (I): wherein R1 is aryl optionally substituted with lower alkyl, etc., R2 is lower alkyl, etc., R3 is hydrogen, etc., R4 is aryl, etc., X is CH or N, and Y is CH or N, and pharmaceutically acceptable salts thereof, to processes for the preparation thereof and to a pharmaceutical composition comprising the same.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: April 3, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Setoi, Takehiko Ohkawa, Tatsuya Zenkoh, Keiji Hemmi, Hirokazu Tanaka
  • Patent number: 6207693
    Abstract: This invention relates to new benzamide derivatives having a vasopressin antagonistic activity, etc. and represented by general formula (I): wherein R1 is aryl optionally substituted with lower alkoxy, etc., R2 is lower alkyl, etc., R3 is hydrogen, etc., A is NH, etc., E is etc., X is —CH═CH—, —CH═N—, or S, and Y is a condensed heterocyclic group, etc., and pharmaceutically acceptable salts thereof, to processes for preparation thereof and to a pharmaceutical composition comprising the same.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: March 27, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Setoi, Takehiko Ohkawa, Tatsuya Zenkoh, Hitoshi Sawada, Yuki Sawada, Teruo Oku
  • Patent number: 6207686
    Abstract: A compound of formula (I), in which: R1 is lower alkyl, cyclo(lower)alkyl, optionally substituted aryl, optionally substituted heterocyclic group, cyclo(lower)alkyl(lower)alkyl, or ar(lower)alkyl; R2 is hydrogen, hydroxy or protected hydroxy; R3 is lower alkyl, aryl, ar(lower)alkyl or optionally substituted heterocyclic(lower)alkyl; R4 is carboxy, protected carboxy or lower alkylsufonylcarbamoyl; R5 is hydrogen or lower alkyl; R6 is hydrogen or heterocyclic group; A is a single bond or lower alkylene, and Ar is optionally substituted aryl, or pharmaceutically acceptable salts thereof, having endothelin antagonistic activity.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: March 27, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masahiro Neya, Tatsuya Zenkoh, Hitoshi Sawada, Chiyoshi Kasahara, Masayoshi Murata, Keiji Hemmi
  • Patent number: 6054457
    Abstract: This invention relates to new benzamide derivatives having a vasopressin antagonistic activity, etc, and represented by general formula (I): ##STR1## wherein R.sup.1 is aryl optionally substituted with lower alkoxy, etc., R.sup.2 is lower alkyl, etc.,R.sup.3 is hydrogen, etc.,R.sup.4 is lower alkoxy, etc.,R.sup.5 is hydrogen, etc.,A is NH, etc.,E is ##STR2## etc., X is --CH.dbd.CH--, --CH.dbd.N--, or S, andY is CH or N,and pharmaceutically acceptable salts thereof, to processes for preparation thereof and to a pharmaceutical composition comprising the same.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: April 25, 2000
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Setoi, Takehiko Ohkawa, Tatsuya Zenkoh, Hitoshi Sawada, Kentaro Sato, Hirokazu Tanaka
  • Patent number: 5521170
    Abstract: Compounds having the structure below ##STR1## and pharmaceutically acceptable salts thereof exhibit vasopressin antagonistic activity, vasodilating activity, hypotensive activity, activity for inhibiting saccharide release in the liver, activity for inhibiting growth of mesagium cells, water diuretic activity, platelet agglutination inhibitory activity, oxytocin antagonistic activity and the like, and are useful in treating or preventing hypertension, heart failure, renal insufficiency, edema, ascites, vasopressin parasecretion syndrome, hepatocirrhosis, hyponatremia, hypokalemia, diabetic or circulation disorder, oxytocin related diseases and the like.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: May 28, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Hiroyuki Setoi, Takehiko Ohkawa, Tatsuya Zenkoh, Keiji Hemmi, Hirokazu Tanaka