Patents by Inventor Iwao Chujo
Iwao Chujo 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).
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Patent number: 10894790Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: GrantFiled: March 18, 2020Date of Patent: January 19, 2021Assignee: KYOWA KIRIN CO., LTDInventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Publication number: 20200216438Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Patent number: 10618894Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: GrantFiled: January 14, 2019Date of Patent: April 14, 2020Assignee: KYOWA KIRIN CO., LTD.Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Publication number: 20190144438Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: ApplicationFiled: January 14, 2019Publication date: May 16, 2019Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Patent number: 10214523Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: GrantFiled: January 8, 2016Date of Patent: February 26, 2019Assignee: KYOWA HAKKO KIRIN CO., LTD.Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo
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Publication number: 20180002326Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: ApplicationFiled: January 8, 2016Publication date: January 4, 2018Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Patent number: 7759491Abstract: The present invention provides a method for producing an indazol-3-ylmethyl phosphonium salt represented by Formula (IV): [wherein X represents halogen, OSO2Ra (wherein Ra represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl or the like), or OC(?O)Rb (wherein Rb has the same meaning as the above Ra), or the like, and R1, R2 and R3 may be the same or different and each represents substituted or unsubstituted aryl or the like] or a salt thereof, which comprises reacting a compound represented by Formula (I): a compound represented by Formula (II): H—X??(II) (wherein X has the same meaning as defined above), and a compound represented by Formula (III): (wherein R1, R2 and R3 have the same meanings as defined above, respectively), and the like.Type: GrantFiled: April 28, 2006Date of Patent: July 20, 2010Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Koji Hagihara, Tsutomu Matsumura, Masahiro Hoshikawa, Iwao Chujo
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Publication number: 20090069568Abstract: The present invention provides a method for producing an indazol-3-ylmethyl phosphonium salt represented by Formula (IV): [wherein X represents halogen, OSO2Ra (wherein Ra represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl or the like), or OC(?O)Rb (wherein Rb has the same meaning as the above Ra), or the like, and R1, R2 and R3 may be the same or different and each represents substituted or unsubstituted aryl or the like] or a salt thereof, which comprises reacting a compound represented by Formula (I): a compound represented by Formula (II): H—X??(II) (wherein X has the same meaning as defined above), and a compound represented by Formula (III): (wherein R1, R2 and R3 have the same meanings as defined above, respectively), and the like.Type: ApplicationFiled: April 28, 2006Publication date: March 12, 2009Applicant: KYOWA HAKKO KOGYO CO., LTD.Inventors: Koji Hagihara, Tsutomu Matsumura, Masahiro Hoshikawa, Iwao Chujo
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Publication number: 20050245750Abstract: (wherein R1 represents hydroxy or substituted or unsubstituted lower alkoxy; R2 represents an aromatic heterocyclic group or the like; Y represents lower alkyl or the like; and n represents an integer of from 1 to 6) For example, a process for preparing a 1,3-benzodioxole-2-spirocycloalkane derivative represented by the above formula (VII), which comprises adding a base to a mixture containing a compound represented by the above formula (V) and a compound represented by the above formula (VI); and allowing the compound represented by the above formula (V) to react with the compound represented by the above formula (VI), are provided.Type: ApplicationFiled: July 3, 2003Publication date: November 3, 2005Applicant: KYOWA HAKKO KOGYO CO., LTD.Inventors: Toshiyuki Atsumi, Arata Yanagaisawa, Iwao Chujo, Hiroshi Tsumuki, Shin-inchiro Mohri
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Publication number: 20050209477Abstract: (wherein R1, R2, R3, R4 and R5 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkoxy, or the like; R17 represents trifluoromethyl or the like; R18, R19, R20, R21 and R22 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like). An easy and simple process for producing a vinyl perfluoroalkanesulfonate derivative represented by general formula (IV) which is a useful intermediate in synthesis of medicines, natural products, or the like, at a low cost, is provided. The process is characterized by, for example, reacting a carbonyl compound represented by general formula (I) described above with a perfluoroalkanesulfonic anhydride represented by general formula (II) described above in the presence of a pyridine derivative represented by general formula (III) described above in an amount of 0.1 to 1.0 equivalent to the perfluoroalkanesulfonic anhydride.Type: ApplicationFiled: June 20, 2003Publication date: September 22, 2005Inventors: Sachiko Kato, Iwao Chujo, Koji Suzuki
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Patent number: 5756823Abstract: The present invention relates to glutathione monoester sulfonate represented by formula (I): ##STR1## (wherein R.sup.1 represent lower alkyl, and R.sup.2 represents lower alkyl, or substituted or unsubstituted aryl) which readily crystallizes and has high stability, and a simple process for producing the same. According to the process, the product having high purity can be obtained in high yields.Type: GrantFiled: May 6, 1997Date of Patent: May 26, 1998Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Sachiko Kato, Iwao Chujo, Takehiro Ogasa, Masaji Kasai, Yukiteru Mimura