Patents by Inventor Shigeki Kunikawa
Shigeki Kunikawa 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: 10774082Abstract: [Problem] Provided is a compound which is useful as an active ingredient of a pharmaceutical composition for treating lung cancer. [Means for Solution] The present inventors have studied a compound useful as an active ingredient of a pharmaceutical composition for treating lung cancer, and as a result, it was found that a quinazoline compound has an excellent G12C mutation KRAS inhibitory activity, and which can be used as a therapeutic agent for lung cancer, and thereby the present invention has been completed. The quinazoline compound of the present invention and a salt thereof may be used as the therapeutic agent for lung cancer.Type: GrantFiled: December 12, 2019Date of Patent: September 15, 2020Assignee: Astellas Pharma Inc.Inventors: Kazuyuki Kuramoto, Michinori Akaiwa, Tomoaki Abe, Takanobu Araki, Susumu Yamaki, Shigeki Kunikawa, Tomoyoshi Imaizumi, Takahiro Nigawara, Keisuke Arakawa, Itsuro Shimada, Masashi Shimazaki, Yoshiki Satake, Kazushi Watanabe, Takanori Koike
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Publication number: 20200140437Abstract: [Problem] Provided is a compound which is useful as an active ingredient of a pharmaceutical composition for treating lung cancer. [Means for Solution] The present inventors have studied a compound useful as an active ingredient of a pharmaceutical composition for treating lung cancer, and as a result, it was found that a quinazoline compound has an excellent G12C mutation KRAS inhibitory activity, and which can be used as a therapeutic agent for lung cancer, and thereby the present invention has been completed. The quinazoline compound of the present invention and a salt thereof may be used as the therapeutic agent for lung cancer.Type: ApplicationFiled: December 12, 2019Publication date: May 7, 2020Applicant: Astellas Pharma Inc.Inventors: Kazuyuki Kuramoto, Michinori Akaiwa, Tomoaki Abe, Takanobu Araki, Susumu Yamaki, Shigeki Kunikawa, Tomoyoshi Imaizumi, Takahiro Nigawara, Keisuke Arakawa, Itsuro Shimada, Masashi Shimazaki, Yoshiki Satake, Kazushi Watanabe, Takanori Koike
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Patent number: 10556906Abstract: [Problem] Provided is a compound which is useful as an active ingredient of a pharmaceutical composition for treating lung cancer. [Means for Solution] The present inventors have studied a compound useful as an active ingredient of a pharmaceutical composition for treating lung cancer, and as a result, it was found that a quinazoline compound has an excellent G12C mutation KRAS inhibitory activity, and which can be used as a therapeutic agent for lung cancer, and thereby the present invention has been completed. The quinazoline compound of the present invention and a salt thereof may be used as the therapeutic agent for lung cancer.Type: GrantFiled: June 5, 2019Date of Patent: February 11, 2020Assignee: ASTELLAS PHARMA INC.Inventors: Kazuyuki Kuramoto, Michinori Akaiwa, Tomoaki Abe, Takanobu Araki, Susumu Yamaki, Shigeki Kunikawa, Tomoyoshi Imaizumi, Takahiro Nigawara, Keisuke Arakawa, Itsuro Shimada, Masashi Shimazaki, Yoshiki Satake, Kazushi Watanabe, Takanori Koike
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Patent number: 10426784Abstract: Compounds of formula (I) defined herein are useful as a dopamine D1 receptor positive allosteric modulators (D1 PAM) and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating cognitive impairment, schizophrenia negative symptom, CIAS, Parkinson's disease, Alzheimer's disease, Huntington's disease, depression, ADHD, drug dependency, or the like.Type: GrantFiled: June 17, 2016Date of Patent: October 1, 2019Assignee: Astellas Pharma Inc.Inventors: Shimpei Kawakami, Tomoyoshi Imaizumi, Naoyuki Masuda, Shigeki Kunikawa, Masataka Morita, Junko Yarimizu
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Publication number: 20190292182Abstract: [Problem] Provided is a compound which is useful as an active ingredient of a pharmaceutical composition for treating lung cancer. [Means for Solution] The present inventors have studied a compound useful as an active ingredient of a pharmaceutical composition for treating lung cancer, and as a result, it was found that a quinazoline compound has an excellent G12C mutation KRAS inhibitory activity, and which can be used as a therapeutic agent for lung cancer, and thereby the present invention has been completed. The quinazoline compound of the present invention and a salt thereof may be used as the therapeutic agent for lung cancer.Type: ApplicationFiled: June 5, 2019Publication date: September 26, 2019Applicant: ASTELLAS PHARMA INC.Inventors: Kazuyuki Kuramoto, Michinori Akaiwa, Tomoaki Abe, Takanobu Araki, Susumu Yamaki, Shigeki Kunikawa, Tomoyoshi Imaizumi, Takahiro Nigawara, Keisuke Arakawa, Itsuro Shimada, Masashi Shimazaki, Yoshiki Satake, Kazushi Watanabe, Takanori Koike
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Publication number: 20180185383Abstract: [Problem] Provided is a compound which is useful as a dopamine D1 receptor positive allosteric modulator (D1 PAM). [Means for Solution] The present inventors have studied a compound which has a positive allosteric modulating action (PAM action) on a dopamine D1 receptor and which can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating cognitive impairment, schizophrenia negative symptom, CIAS, Parkinson's disease, Alzheimer's disease, Huntington's disease, depression, ADHD, drug dependency, or the like. Thus, they have found that the imidazodiazepine compound of the present invention has a PAM action on a dopamine D1 receptor, and thereby completed the present invention.Type: ApplicationFiled: June 17, 2016Publication date: July 5, 2018Applicant: Astellas Pharma Inc.Inventors: Shimpei KAWAKAMI, Tomoyoshi IMAIZUMI, Naoyuki MASUDA, Shigeki KUNIKAWA, Masataka MORITA, Junko YARIMIZU
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Patent number: 9670219Abstract: [Problem] Provided is a compound having a positive allosteric modulating activity (PAM activity) on an ?7 nicotinic acetylcholine receptor (?7 nACh receptor). [Means for Solution] The present inventors have studied on a PAM activity on an ?7 nACh receptor, and they have found that a tetrahydrooxepinopyridine compound has a PAM activity on an ?7 nACh receptor, thereby completing the present invention. The tetrahydrooxepinopyridine compound of the present invention has a PAM activity on an ?7 nACh receptor and can be expected as an agent for preventing or treating dementia, cognitive impairment, schizophrenia, Alzheimer's disease, CIAS, negative symptoms of schizophrenia, inflammatory diseases, or pain.Type: GrantFiled: September 7, 2016Date of Patent: June 6, 2017Assignee: Astellas Pharma Inc.Inventors: Yohei Koganemaru, Satoshi Miyamoto, Shinya Nagashima, Akio Kamikawa, Koichi Yonezawa, Yuka Koizumi, Satoshi Aoki, Takashi Ogiyama, Shimpei Kawakami, Shigeki Kunikawa, Ryo Sato, Junichi Shishikura, Shuichirou Kakimoto, Hiroshi Yamada, Keisuke Tamaki
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Publication number: 20170050973Abstract: [Problem] Provided is a compound having a positive allosteric modulating activity (PAM activity) on an ?7 nicotinic acetylcholine receptor (?7 nACh receptor). [Means for Solution] The present inventors have studied on a PAM activity on an ?7 nACh receptor, and they have found that a tetrahydrooxepinopyridine compound has a PAM activity on an ?7 nACh receptor, thereby completing the present invention. The tetrahydrooxepinopyridine compound of the present invention has a PAM activity on an ?7 nACh receptor and can be expected as an agent for preventing or treating dementia, cognitive impairment, schizophrenia, Alzheimer's disease, CIAS, negative symptoms of schizophrenia, inflammatory diseases, or pain.Type: ApplicationFiled: September 7, 2016Publication date: February 23, 2017Applicant: ASTELLAS PHARMA INC.Inventors: Yohei KOGANEMARU, Satoshi MIYAMOTO, Shinya NAGASHIMA, Akio KAMIKAWA, Koichi YONEZAWA, Yuka KOIZUMI, Satoshi AOKI, Takashi OGIYAMA, Shimpei KAWAKAMI, Shigeki KUNIKAWA, Ryo SATO, Junichi SHISHIKURA, Shuichirou KAKIMOTO, Hiroshi YAMADA, Keisuke TAMAKI
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Patent number: 8603975Abstract: The present invention relates to a new cyclic peptide compound or a salt thereof, which has anti-hepatitis C virus activities based on inhibitory activity against the RNA replication of hepatitis C virus replicon, a process for preparation thereof, a pharmaceutical composition comprising the same, and a method for prophylactic and/or therapeutic treatment of hepatitis C in a human being or an animal.Type: GrantFiled: April 25, 2008Date of Patent: December 10, 2013Assignee: Astellas Pharma Inc.Inventors: Toshio Yamanaka, Hidenori Ohki, Junya Ishida, Ayako Toda, Yu Harayama, Takuya Makino, Shigeki Kunikawa, Hiroaki Mizuno, Hiroaki Ohtake
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Publication number: 20110159019Abstract: Provided is a compound which is useful as an active ingredient for a pharmaceutical having a PKC? inhibition activity, particularly a pharmaceutical composition for inhibiting acute rejection occurring in transplantation. The present inventors have conducted extensive studies on a compound having a PKC? inhibition activity, and as a result, they have found that a compound having a structure such as aralkyl and the like on an amino group at the 2-position and also having a structure such as an adamantylalkyl group and the like on an amino group at the 4-position of 2,4-diaminopyrimidine, or a salt thereof has an excellent PKC? inhibition activity, thereby completing the present invention. The 2,4-diaminopyrimidine compound of the present invention can be used as a PKC? inhibitor or an inhibitor of acute rejection occurring in transplantation.Type: ApplicationFiled: August 31, 2009Publication date: June 30, 2011Inventors: Akira Tanaka, Koichiro Mukoyoshi, Shigeki Kunikawa, Yuji Takasuna, Jun Maeda, Noboru Chida, Shinya Nagashima
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Publication number: 20110039822Abstract: The present invention provides a compound having an excellent JAK3 inhibition activity and being useful as an active ingredient of an agent for treating and/or preventing various immune diseases including autoimmune diseases, inflammatory diseases, and allergic diseases. As a result of studies on a novel condensed heterocyclic derivative, the inventors have found that a compound having a cross-linked structure has an excellent JAK3 inhibition activity, and have completed the present invention. In other words, it is verified that the compound according to the present invention has an inhibition activity against JAK3 and is thus useful as an active ingredient of an agent for treating or preventing diseases caused by undesirable cytokine signal transmission (e.g.Type: ApplicationFiled: October 28, 2010Publication date: February 17, 2011Applicant: Astellas Pharma Inc.Inventors: Takayuki INOUE, Akira Tanaka, Kazuo Nakai, Hiroshi Sasaki, Fumie Takahashi, Shohei Shirakami, Keiko Hatanaka, Yutaka Nakajima, Koichiro Mukoyoshi, Hisao Hamaguchi, Shigeki Kunikawa, Yasuyuki Higashi
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Patent number: 7879844Abstract: The present invention provides a compound of formula (I) having an excellent JAK3 inhibition activity and being useful as an active ingredient of an agent for treating and/or preventing various immune diseases including autoimmune diseases inflammatory diseases, and allergic diseases. The compound according to the present invention has an inhibition activity against JAK3 and is thus useful as an active ingredient of an agent for treating or preventing diseases caused by undesirable cytokine signal transmission (e.g., rejection during organ/tissue transplantation, autoimmune diseases, multiple sclerosis, rheumatoid arthritis, psoriasis, asthma, atopic dermatitis, Alzheimer's disease, and atherosclerotic disease), or diseases caused by abnormal cytokine signal transmission (e.g., cancer and leukemia).Type: GrantFiled: December 25, 2006Date of Patent: February 1, 2011Assignee: Astellas Pharma Inc.Inventors: Takayuki Inoue, Akira Tanaka, Kazuo Nakai, Hiroshi Sasaki, Fumie Takahashi, Shohei Shirakami, Keiko Hatanaka, Yutaka Nakajima, Koichiro Mukoyoshi, Hisao Hamaguchi, Shigeki Kunikawa, Yasuyuki Higashi
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Publication number: 20100120672Abstract: The present invention relates to a new cyclic peptide compound or a salt thereof, which has anti-hepatitis C virus activities based on inhibitory activity against the RNA replication of hepatitis C virus replicon, a process for preparation thereof, a pharmaceutical composition comprising the same, and a method for prophylactic and/or therapeutic treatment of hepatitis C in a human being or an animal.Type: ApplicationFiled: April 25, 2008Publication date: May 13, 2010Inventors: Toshio Yamanaka, Hidenori Ohki, Junya Ishida, Ayako Toda, Yu Harayama, Takuya Makino, Shigeki Kunikawa, Hiroaki Mizuno, Hiroaki Ohtake
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Publication number: 20090270376Abstract: The present invention provides a compound of formula (I) having an excellent JAK3 inhibition activity and being useful as an active ingredient of an agent for treating and/or preventing various immune diseases including autoimmune diseases inflammatory diseases, and allergic diseases. The compound according to the present invention has an inhibition activity against JAK3 and is thus useful as an active ingredient of an agent for treating or preventing diseases caused by undesirable cytokine signal transmission (e.g., rejection during organ/tissue transplantation, autoimmune diseases, multiple sclerosis, rheumatoid arthritis, psoriasis, asthma, atopic dermatitis, Alzheimer's disease, and atherosclerotic disease), or diseases caused by abnormal cytokine signal transmission (e.g., cancer and leukemia).Type: ApplicationFiled: December 25, 2006Publication date: October 29, 2009Applicant: Astellas Pharma Inc.Inventors: Takayuki Inoue, Akira Tanaka, Kazuo Nakai, Hiroshi Sasaki, Fumie Takahashi, Shohei Shirakami, Keiko Hatanaka, Yutaka Nakajima, Koichiro Mukoyoshi, Hisao Hamaguchi, Shigeki Kunikawa, Yasuyuki Higashi