Patents by Inventor Yasuhiro Katsu

Yasuhiro Katsu 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: 20180148452
    Abstract: Disclosed are a novel pyrrolopyrimidine ring compound as a TLR7 agonist or a pharmaceutically acceptable salt thereof, used for preventing or treating allergic rhinitis and asthma. In particular, disclosed is a compound represented by formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: December 29, 2015
    Publication date: May 31, 2018
    Applicant: MEDSHINE DISCOVERY INC.
    Inventors: Charles Z. DING, Fei SUN, Lifang WU, Jinhua DU, Yasuhiro KATSU, Guoping HU, Jian LI
  • Publication number: 20100273794
    Abstract: This invention provides a compound of the formula (I): or a pharmaceutically acceptable salt thereof, and compositions containing such compounds and the use of such compounds for the manufacture of medicament for gastroesophageal reflux disease, gastrointestinal disease, gastric motility disorder, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome (IBS), constipation, dyspepsia, esophagitis, gastroesophageral disease, nausea, central nervous system disease, Alzheimer's disease, cognitive disorder, emesis, migraine, neurological disease, pain, cardiovascular disorders, cardiac failure, heart arrhythmia, diabetes and apnea syndrome. These compounds have 5-HT4 receptor agonistic activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 28, 2010
    Applicant: Pfizer Inc.
    Inventors: Yasuhiro Katsu, Satoru Iguchi, Hiroki Sone, Chikara Uchida, Takashi Kojima
  • Patent number: 7776885
    Abstract: This invention provides a compound of the formula (I): or a pharmaceutically acceptable salt thereof, and compositions containing such compounds and the use of such compounds for the manufacture of medicament for gastroesophageal reflux disease, gastrointestinal disease, gastric motility disorder, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome (IBS), constipation, dyspepsia, esophagitis, gastroesophageral disease, nausea, central nervous system disease, Alzheimer's disease, cognitive disorder, emesis, migraine, neurological disease, pain, cardiovascular disorders, cardiac failure, heart arrhythmia, diabetes and apnea syndrome. These compounds have 5-HT4 receptor agonistic activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: August 17, 2010
    Assignee: Pfizer, Inc.
    Inventors: Yasuhiro Katsu, Satoru Iguchi, Hiroki Sone, Chikara Uchida, Takashi Kojima
  • Patent number: 7012080
    Abstract: This invention provides a compound of the formula (I): or a pharmaceutically acceptable salt thereof, wherein R1 represents a hydrogen atom or a halogen atom; R2 represents a methyl group or an ethyl group; R3 represents a branched alkyl group having from 3 to 6 carbon atoms or an alkyl group having from 3 to 6 carbon atoms substituted by an alkoxy group having from 1 to 6 carbon atoms; with the proviso that when the terminal carbon atom of said alkyl group of R3 is substituted by said alkoxy group, said alkyl group is a branched alkyl group. These compounds have 5-HT4 receptor binding activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: March 14, 2006
    Assignee: Pfizer Inc.
    Inventors: Satoru Iguchi, Yasuhiro Katsu, Kana Kon-I, Hirohide Noguchi, Chikara Uchida
  • Patent number: 6951867
    Abstract: This invention provides a compound of the formula (I): or a pharmaceutically acceptable salt, amide or ester thereof, wherein R1 represents a hydrogen atom or a halogen atom; R2 represents a hydrogen atom, etc.; R3 represents an alkyl group having from 1 to 10 carbon atoms; said alkyl group of R3 is substituted by at least one substituent selected from the group consisting of substituents ?; said substituents ? is aryl, hydroxy, oxo, etc.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: October 4, 2005
    Assignee: Pfizer Inc.
    Inventors: Yasuhiro Katsu, Kana Kon-I, Mikio Morita, Hirohide Noguchi, Chikara Uchida
  • Publication number: 20050148573
    Abstract: This invention provides a compound of the formula (I): or a pharmaceutically acceptable salt thereof, and compositions containing such compounds and the use of such compounds for the manufacture of medicament for gastroesophageal reflux disease, gastrointestinal disease, gastric motility disorder, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome (IBS), constipation, dyspepsia, esophagitis, gastroesophageral disease, nausea, central nervous system disease, Alzheimer's disease, cognitive disorder, emesis, migraine, neurological disease, pain, cardiovascular disorders, cardiac failure, heart arrhythmia, diabetes and apnea syndrome. These compounds have 5-HT4 receptor agonistic activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans.
    Type: Application
    Filed: September 2, 2004
    Publication date: July 7, 2005
    Inventors: Yasuhiro Katsu, Satoru Iguchi, Hiroki Sone, Chikara Uchida, Takashi Kojima
  • Publication number: 20040127514
    Abstract: This invention provides a compound of the formula (I): 1
    Type: Application
    Filed: September 17, 2003
    Publication date: July 1, 2004
    Applicant: Pfizer Inc
    Inventors: Yasuhiro Katsu, Kana Kon-I, Mikio Morita, Hirohide Noguchi, Chikara Uchida
  • Publication number: 20040122043
    Abstract: This invention provides a compound of the formula (I): 1
    Type: Application
    Filed: September 17, 2003
    Publication date: June 24, 2004
    Applicant: Pfizer Inc
    Inventors: Satoru Iguchi, Yasuhiro Katsu, Kana Kon-I, Hirohide Noguchi, Chikara Uchida
  • Patent number: 6734306
    Abstract: This invention provides a compound of the formula (I): or the pharmaceutically acceptable salts thereof wherein X1 and X2 are halo; R1 and R2 are independently hydrogen or C1-4 alkyl; R3 and R4 are each hydrogen or halo; and R5 is (a) —C3-9 diazacycloalkyl optionally substituted with C5-11 azabicycloalkyl; (b) —C3-9 azacycloalkyl-NH—(C5-11 azabicycloalkyl optionally substituted with C1-4 alkyl); (c) —NH—C1-3 alkyl-C(O)—C5-11 diazabicycloalkyl; (d) —NH—C1-3 alkyl-C(O)—NH—C5-11 azabicycloalkyl, the C5-11 azabicycloalkyl being optionally substituted with C1-4 alkyl; (e) —C3-9 azacycloalkyl optionally substituted with C3-9 azacycloalkyl; or (f) —NH—C1-5 alkyl-NH—C(O)—C4-9 cycloalkyl-NH2. These compounds are useful for the treatment of medical conditions mediated by bradykinin such as inflammation, allergic rhinitis, pain, etc.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: May 11, 2004
    Assignee: Pfizer, Inc.
    Inventors: Yasuhiro Katsu, Makoto Kawai, Hiroki Koike, Seiji Nukui
  • Patent number: 6653313
    Abstract: The present invention relates to compounds of the formula wherein each A is independently halo; Y is —(CH2)m—, —C(O)— or —S(O)—; R1 and R2 are independently C1-4 alkyl; R3 is substituted azacycloalkyl etc.; R4 is phenyl substituted at the 2-position with a substituent selected from substituted C1-7 alkyl, substituted C1-7 alkoxy, amine, etc; R5 is hydrogen or C1-4 alkyl; m is 0, 1 or 2; and n is 0, 1, 2, 3, 4 or 5. The present invention also relates to pharmaceutical compositions containing such compounds and to the use of such compounds in the treatment and prevention of inflammation, asthma, allergic rhinitis, pain and other disorders.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: November 25, 2003
    Assignee: Warner-Lambert Company LLC
    Inventors: Mitsuhiro Kawamura, Makoto Kawai, Yuji Shishido, Tomoki Kato, Yasuhiro Katsu, Takafumi Ikeda, Noriaki Murase
  • Publication number: 20020161006
    Abstract: The present invention relates to compounds of the formula 1
    Type: Application
    Filed: July 11, 2001
    Publication date: October 31, 2002
    Inventors: Mitsuhiro Kawamura, Makoto Kawai, Yuji Shishido, Tomoki Kato, Yasuhiro Katsu, Takafumi Ikeda, Noriaki Murase
  • Publication number: 20020128271
    Abstract: This invention provides a compound of the formula (I): 1
    Type: Application
    Filed: December 5, 2001
    Publication date: September 12, 2002
    Applicant: Pfizer Inc.
    Inventors: Yasuhiro Katsu, Makoto Kawai, Hiroki Koike, Seiji Nukui