Patents by Inventor Shuichi Ohkubo
Shuichi Ohkubo 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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Publication number: 20210177813Abstract: Provided is a method of treating malignant tumor by an azabicyclic compound, particularly, with eye disorder reduced. The present invention provides a method for treating malignant tumor, comprising administering an effective amount of 3-ethyl-4-[3-(1-methylethyl)-4-[4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl]-1H-pyrazolo[3,4-b]pyridin-1-yl]benzamide (compound 1) or a salt thereof to a patient in need thereof according to a dosing regimen, wherein the dosing regimen comprises administering the compound 1 or the salt thereof at a dose from 40 mg/body/day to 240 mg/body/day in terms of the amount of the compound 1 for consecutive days, and then providing a withdrawal period of at least 2 days.Type: ApplicationFiled: May 14, 2019Publication date: June 17, 2021Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventor: Shuichi OHKUBO
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Publication number: 20200129487Abstract: Provided are a novel cancer treatment method and immunostimulant which exhibit a remarkably excellent antitumor effect with little side effects. An antitumor agent and an immunostimulant include an azabicyclo compound and an immune checkpoint molecule regulator which are administered in combination.Type: ApplicationFiled: June 29, 2018Publication date: April 30, 2020Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventor: Shuichi OHKUBO
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Patent number: 10174040Abstract: A pyrrolopyrimidine compound or a salt thereof and compositions, NAE inhibitors and anti-tumor agents containing the pyrrolopyrimidine compound or a salt thereof.Type: GrantFiled: February 7, 2018Date of Patent: January 8, 2019Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Takashi Mizutani, Chihoko Yoshimura, Hitomi Kondo, Makoto Kitade, Shuichi Ohkubo
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Patent number: 10100095Abstract: An object to be solved by the present invention is to identify patients resistant to known HSP90 inhibitors, and to provide a novel therapeutic agent for treating the patients who have become resistant to known HSP90 inhibitors. As a means for solving the above problems, the present invention provides identification of the patients based on a protein, which is an HSP90 family protein having a mutation in the site corresponding to F138 of HSP90? class A consisting of the amino acid sequence of SEQ ID NO: 1, and use of a substance that inhibits the protein as an active ingredient of a therapeutic agent.Type: GrantFiled: October 2, 2014Date of Patent: October 16, 2018Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Chihoko Yoshimura, Yasuo Kodama, Shuichi Ohkubo
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Publication number: 20180162864Abstract: A pyrrolopyrimidine compound or a salt thereof and compositions, NAE inhibitors and anti-tumor agents containing the pyrrolopyrimidine compound or a salt thereof.Type: ApplicationFiled: February 7, 2018Publication date: June 14, 2018Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Takashi MIZUTANI, Chihoko YOSHIMURA, Hitomi KONDO, Makoto KITADE, Shuichi OHKUBO
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Patent number: 9963456Abstract: A pyrrolopyrimidine compound or a salt thereof and compositions, NAE inhibitors and anti-tumor agents containing the pyrrolopyrimidine compound or a salt thereof.Type: GrantFiled: June 24, 2015Date of Patent: May 8, 2018Assignee: Taiho Pharmaceutical Co., LtdInventors: Takashi Mizutani, Chihoko Yoshimura, Hitomi Kondo, Makoto Kitade, Shuichi Ohkubo
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Publication number: 20170066772Abstract: An object to be solved by the present invention is to provide a novel pyrrolopyrimidine compound or a salt thereof having an NAE inhibitory action and a cell growth inhibitory effect. The present invention provides a compound or a salt thereof represented by Formula (A), as well as an NAE inhibitor, a pharmaceutical composition, and an antitumor agent comprising the compound or a salt thereof as an active ingredient.Type: ApplicationFiled: June 24, 2015Publication date: March 9, 2017Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Takashi MIZUTANI, Chihoko YOSHIMURA, Hitomi KONDO, Makoto KITADE, Shuichi OHKUBO
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Publication number: 20160311871Abstract: An object to be solved by the present invention is to identify patients resistant to known HSP90 inhibitors, and to provide a novel therapeutic agent for treating the patients who have become resistant to known HSP90 inhibitors. As a means for solving the above problems, the present invention provides identification of the patients based on a protein, which is an HSP90 family protein having a mutation in the site corresponding to F138 of HSP90? class A consisting of the amino acid sequence of SEQ ID NO: 1, and use of a substance that inhibits the protein as an active ingredient of a therapeutic agent.Type: ApplicationFiled: October 2, 2014Publication date: October 27, 2016Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Chihoko Yoshimura, Yasuo Kodama, Shuichi Ohkubo
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Patent number: 9273045Abstract: It is intended to provide a novel azabicyclo compound which exhibits both HSP90 inhibitory activity and cell proliferation inhibitory effect. Specifically disclosed is a compound represented by the following general formula (I) or a salt thereof: wherein X1 represents CH or N; any one of X2, X3 and X4 represents N, and the others represent CH; any one or two of Y1, Y2, Y3 and Y4 represent C—R4, and the others are the same or different and represent CH or N; R1 represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S and O; R2 represents an alkyl group having 1 to 6 carbon atoms, or the like; and R3 and R4 represent —CO—R5 or the like.Type: GrantFiled: April 1, 2014Date of Patent: March 1, 2016Assignee: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Makoto Kitade, Shuichi Ohkubo, Chihoko Yoshimura, Satoshi Yamashita, Hiromi Oshiumi, Takao Uno, Yuichi Kawai
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Patent number: 9164030Abstract: The present invention is applied for an image capturing device having a light source and a camera that captures an image of a measurement subject placed in an optical path that lies between said camera itself and said light source. The image capturing device according to the present invention includes a control unit that subtracts a plurality of frame images captured by said camera during an OFF period of said light source from a plurality of frame images captured by said camera during an ON period of said light source, the number of frame images captured by said camera during the OFF period being the same as that number of frame images obtained by said camera during the ON period and integrates the differences between their images.Type: GrantFiled: March 27, 2012Date of Patent: October 20, 2015Assignees: NEC CORPORATION, NIPPON AVIONICS CO., LTD.Inventors: Naoki Oda, Shuichi Ohkubo, Takayuki Sudo
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Patent number: 9128042Abstract: The present invention is applied for an image capturing device having a light source and a camera that captures an image of a measurement subject placed in an optical path that lies between said camera itself and said light source. The image capturing device according to the present invention includes a control unit that subtracts a plurality of frame images captured by said camera during an OFF period of said light source from a plurality of frame images captured by said camera during an ON period of said light source, the number of frame images captured by said camera during the OFF period being the same as that number of frame images obtained by said camera during the ON period and integrates the differences between their images.Type: GrantFiled: March 27, 2012Date of Patent: September 8, 2015Assignees: NEC CORPORATION, NIPPON AVIONICS CO., LTD.Inventors: Naoki Oda, Shuichi Ohkubo, Takayuki Sudo
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Patent number: 9120780Abstract: The invention provides an indazole compound of formula (I) which is capable of inhibiting HSP90 and shows a cytostatic effect on cancer cells:Type: GrantFiled: January 6, 2012Date of Patent: September 1, 2015Assignee: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Makoto Kitade, Shuichi Ohkubo, Chihoko Yoshimura
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Patent number: 9094596Abstract: A camera generates a light source control signal for controlling a light source to turn the light source on and off, acquires a plurality of items of first image data and a plurality of items of second image data obtained by picking up the measured wave, and transfers the plurality of items of acquired first image data and the plurality of items of acquired second image data to an external storage and processing device as digital data with an identifying number for identifying a frame in which the image data is acquired attached every frame. The external storage and processing device determines whether each frame of the digital data is an item of the first image data or an item of the second image data on the basis of the identifying number, and subtracts the plurality of items of determined second image data from the plurality of items of determined first image data to produce difference image data.Type: GrantFiled: February 8, 2013Date of Patent: July 28, 2015Assignees: NEC CORPORATION, NIPPON AVIONICS CO., LTD.Inventors: Kazunori Inoue, Shuichi Ohkubo
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Patent number: 9029777Abstract: Provided is an imaging system, including: a light source; an imaging device; a first optical system for irradiating an imaging object with light from the light source; a second optical system for causing one of light reflected from the imaging object and light transmitted through the imaging object to enter the imaging device; a control device for controlling the light source to irradiate the light with a predetermined period; and a processing device for acquiring time-series image data over a plurality of frames by controlling the light source to irradiate the light with the predetermined period, and allocating a maximum pixel intensity among the time-series pixel data of each pixel as pixel data of the each pixel to thereby obtain first image data when the light source irradiates the light.Type: GrantFiled: February 19, 2014Date of Patent: May 12, 2015Assignees: NEC Corporation, Nippon Avionics Co., Ltd., Osaka UniversityInventors: Naoki Oda, Takayuki Sudou, Shuichi Ohkubo, Goro Isoyama, Ryukou Kato, Akinori Irizawa, Keigo Kawase
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Patent number: 8912181Abstract: A novel bicyclic compound having an HSP90 inhibitory effect and a carcinostatic effect. A pharmaceutical agent based on the HSP90 inhibitory effect and useful in the prevention and/or treatment of a disease involving HSP90, particularly cancer. The compound has a general formula (I) or is a salt thereof wherein at least one of X1, X2, X3, and X4 represents N or N-oxide and the rest thereof are each independently C—R2; any one or two of Y1, Y2, Y3, and Y4 represent C—R4 and the rest thereof are each independently CH or N; R1 represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S, and O; R2 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms etc.; R3 represents a hydrogen atom, —CO—R5 etc.Type: GrantFiled: January 6, 2012Date of Patent: December 16, 2014Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Makoto Kitade, Satoshi Yamashita, Shuichi Ohkubo
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Publication number: 20140303162Abstract: It is intended to provide a novel azabicyclo compound which exhibits both HSP90 inhibitory activity and cell proliferation inhibitory effect. Specifically disclosed is a compound represented by the following general formula (I) or a salt thereof: wherein X1 represents CH or N; any one of X2, X3 and X4 represents N, and the others represent CH; any one or two of Y1, Y2, Y3 and Y4 represent C—R4, and the others are the same or different and represent CH or N; R1 represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S and O; R2 represents an alkyl group having 1 to 6 carbon atoms, or the like; and R3 and R4 represent —CO—R5 or the like.Type: ApplicationFiled: April 1, 2014Publication date: October 9, 2014Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Makoto KITADE, Shuichi Ohkubo, Chihoko Yoshimura, Satoshi Yamashita, Hiromi Oshiumi, Takao Uno, Yuichi Kawai
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Publication number: 20140232931Abstract: Provided is an imaging system, including: a light source; an imaging device; a first optical system for irradiating an imaging object with light from the light source; a second optical system for causing one of light reflected from the imaging object and light transmitted through the imaging object to enter the imaging device; a control device for controlling the light source to irradiate the light with a predetermined period; and a processing device for acquiring time-series image data over a plurality of frames by controlling the light source to irradiate the light with the predetermined period, and allocating a maximum pixel intensity among the time-series pixel data of each pixel as pixel data of the each pixel to thereby obtain first image data when the light source irradiates the light.Type: ApplicationFiled: February 19, 2014Publication date: August 21, 2014Applicants: NEC Corporation, OSAKA University, NIPPON Avionics Co., Ltd.Inventors: Naoki ODA, Takayuki SUDOU, Shuichi OHKUBO, Goro ISOYAMA, Ryukou KATO, Akinori IRIZAWA, Keigo KAWASE
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Patent number: 8779142Abstract: It is intended to provide a novel azabicyclo compound which exhibits both HSP90 inhibitory activity and cell proliferation inhibitory effect. Specifically disclosed is a compound represented by the following general formula (I) or a salt thereof: wherein X1 represents CH or N; any one of X2, X3 and X4 represents N, and the others represent CH; any one or two of Y1, Y2, Y3 and Y4 represent C—R4, and the others are the same or different and represent CH or N; R1 represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S and O; R2 represents an alkyl group having 1 to 6 carbon atoms, or the like; and R3 and R4 represent —CO—R5 or the like.Type: GrantFiled: July 9, 2010Date of Patent: July 15, 2014Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Makoto Kitade, Shuichi Ohkubo, Chihoko Yoshimura, Satoshi Yamashita, Hiromi Oshiumi, Takao Uno, Yuichi Kawai
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Publication number: 20130296320Abstract: Provided is a novel bicyclic compound which has an HSP90 inhibitory effect and a carcinostatic effect. Also provided is a pharmaceutical agent which is based on the HSP90 inhibitory effect and is useful in the prevention and/or treatment of a disease involving HSP90, particularly, cancer. The present invention provides a compound represented by the following general formula (I) or a salt thereof wherein at least one of X1, X2, X3, and X4 represents N or N-oxide and the rest thereof are the same or different and each represent C—R2; any one or two of Y1, Y2, Y3, and Y4 represent C—R4 and the rest thereof are the same or different and each represent CH or N; R1 represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S, and O; R2 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms etc.; R3 represents a hydrogen atom, —CO—R5 etc.; R4 represents a hydrogen atom, —CO—R6, —N(R7)(R8) etc.Type: ApplicationFiled: January 6, 2012Publication date: November 7, 2013Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Makoto Kitade, Satoshi Yamashita, Shuichi Ohkubo
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Publication number: 20130289072Abstract: The present invention relates to provision of a novel indazole compound which is capable of inhibiting HSP90 and shows a cytostatic effect on cancer cells. The present invention also relates to provision of a drug useful for preventing and/or treating, on the basis of an HSP90 inhibitory effect, a disease in which HSP90 participates, in particular, cancer. A compound represented by the general formula (I) or a salt thereof: wherein X represents CH or N; any one or two of Y1, Y2, Y3, and Y4 represent C—R3 or N, and the others represent CH; A and B are the same or different and represent an optionally substituted monocyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S, and O; R1 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms etc.; R2 represents a hydrogen atom, a halogen atom etc.; R3 represents a hydrogen atom, a halogen atom etc.; R4 and R5 are the same or different and represent a hydroxyl group etc.Type: ApplicationFiled: January 6, 2012Publication date: October 31, 2013Applicant: TAIHO PHARMACEUTICAL CO., LTD.Inventors: Makoto Kitade, Shuichi Ohkubo, Chihoko Yoshimura