Patents by Inventor Masaaki Sawa
Masaaki Sawa 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: 20230138851Abstract: The present invention provides a compound that has an inhibitory effect on DYRK and that is represented by general formula (I): wherein Q, R1, R2 and R3 are as defined in the description.Type: ApplicationFiled: January 28, 2021Publication date: May 4, 2023Applicant: CARNA BIOSCIENCES, INC.Inventors: Ayako SAWA, Wataru KAWAHATA, Yuko ASAMITSU, Masaaki SAWA, Yasuhiro IWATA, Hideki MORIYAMA, Shingo TOJO, Daisuke URABE
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Publication number: 20230097964Abstract: Provided herein are novel compounds having an inhibitory effect on the activation of a STING pathway. The provided compounds are 1,2-diaminobenzimidazole derivatives represented by a compound formula (I) or a pharmaceutically acceptable salt thereof: wherein A1, A2, R1, R2, R3, R4, and R5 are defined in the specification.Type: ApplicationFiled: July 21, 2022Publication date: March 30, 2023Inventors: Hirokazu MATSUMOTO, Takao KIYOI, Shiori TAKAMATSU, Masaaki SAWA
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Publication number: 20230100235Abstract: This invention provides with a novel means to treat a cancer, in which reversible BTK inhibitor is combined with a BCL-2 inhibitor. Specifically an anticancer agent composition in which a BTK inhibitor below; is combined with venetoclax.Type: ApplicationFiled: February 4, 2021Publication date: March 30, 2023Applicant: CARNA BIOSCIENCES, INC.Inventors: Masaaki SAWA, Yu NISHIOKA, Hiroko ENDO
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Publication number: 20220324866Abstract: The present disclosure provides diacylglycerol kinase modulating compounds, and pharmaceutical compositions thereof, for treating cancer, including solid tumors, and viral infections, such as HIV or hepatitis B virus infection. The compounds can be used alone or in combination with other agents.Type: ApplicationFiled: December 18, 2020Publication date: October 13, 2022Inventors: Masaaki SAWA, Mai ARAI, Ryoko NAKAI, Hirokazu MATSUMOTO, Catherine PUGH, Eric HU, Juan GUERRERO, Jesse JACOBSEN, Jonathan William MEDLEY, Jie XU, Latesh LAD, Leena PATEL, Michael GRAUPE, Qingming ZHU, Stephen HOLMBO, Tetsuya KOBAYASHI, Will WATKINS, Yasamin MOAZAMI, Suet C. YEUNG, Julian A. CODELLI, Heath A. WEAVER
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Patent number: 10793575Abstract: An oxoisoquinoline compound of the following formula: or a pharmaceutically acceptable salt thereof; a pharmaceutical composition comprising the oxoisoquinoline compound or salt; and a method for treating B-cell lymphoma comprising administering the oxoisoquinoline compound or salt to a patient.Type: GrantFiled: November 24, 2017Date of Patent: October 6, 2020Assignee: CARNA BIOSCIENCES, INC.Inventors: Wataru Kawahata, Takao Kiyoi, Takayuki Irie, Tokiko Asami, Masaaki Sawa, Shigeki Kashimoto
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Publication number: 20200055848Abstract: Herein disclosed are compounds, compositions, kits, and methods of treating cancers using 7-azaindolyl furanone/thiophene derivatives. These derivatives inhibit serine-threonine kinase Cdc7, a recognized anticancer target affecting DNA replication. Further, the compounds disclosed herein possess potent inhibitory activity in the presence of adenosine triphosphate (ATP), demonstrate significant kinase selectivity, and offer advantages over known Cdc7 inhibitors with prolonged half-life and inhibitory effects.Type: ApplicationFiled: November 2, 2017Publication date: February 20, 2020Inventors: Takayuki IRIE, Ayako SAWA, Masaaki SAWA, Tokiko ASAMI, Yoko FUNAKOSHI, Chika TANIYAMA
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Patent number: 10538521Abstract: The present invention provides a novel 2,4,6-substituted pyrimidine derivative, which is a compound represented by formula (I) (in the formula, ring A is a 6-membered heteroaryl group having at least one N atom optionally substituted with R1, R2, and R3; Z is an optionally substituted alkoxy group, an optionally substituted amino group, an optionally substituted heterocycloalkyl group, or an optionally substituted heteroaryl group; and R1, R2, and R3 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted alkoxy group, an optionally substituted cycloalkyloxy group, an optionally substituted heterocycloalkyloxy group, an optionally substituted phenoxy group, an optionally substituted amino group, a nitro group, and a hydroxy group) or a pharmaceutically acceptable salt thereof.Type: GrantFiled: October 25, 2017Date of Patent: January 21, 2020Assignees: CARNA BIOSCIENCES, INC., THE KITASATO INSTITUTEInventors: Masaaki Sawa, Yuko Asamitsu, Yuko Uno, Satoshi Omura, Kazuhiko Otoguro, Masato Iwatsuki, Aki Ishiyama, Rei Hokari
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Publication number: 20190359616Abstract: The present invention provides with an oxoisoquinoline derivative represented by the formula (I) (in the formula, Q and R1 are as defined in the description) or a pharmaceutically acceptable salt thereof, which is useful as a Bruton's kinase inhibitor for treating cancer, B-cell lymphoma, chronic lymphocytic leukemia and the like.Type: ApplicationFiled: November 24, 2017Publication date: November 28, 2019Applicant: CARNA BIOSCIENCES, INC.Inventors: Wataru KAWAHATA, Takao KIYOI, Takayuki IRIE, Tokiko ASAMI, Masaaki SAWA, Shigeki KASHIMOTO
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Publication number: 20190345154Abstract: The present invention provides a novel 2,4,6-substituted pyrimidine derivative, which is a compound represented by formula (I) (in the formula, ring A is a 6-membered heteroaryl group having at least one N atom optionally substituted with R1, R2, and R3; Z is an optionally substituted alkoxy group, an optionally substituted amino group, an optionally substituted heterocycloalkyl group, or an optionally substituted heteroaryl group; and R1, R2, and R3 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted alkoxy group, an optionally substituted cycloalkyloxy group, an optionally substituted heterocycloalkyloxy group, an optionally substituted phenoxy group, an optionally substituted amino group, a nitro group, and a hydroxy group) or a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: October 25, 2017Publication date: November 14, 2019Applicants: CARNA BIOSCIENCES, INC., THE KITASATO INSTITUTEInventors: Masaaki SAWA, Yuko ASAMITSU, Yuko UNO, Satoshi OMURA, Kazuhiko OTOGURO, Masato IWATSUKI, Aki ISHIYAMA, Rei HOKARI
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Publication number: 20190269227Abstract: The present disclosure relates to a method for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates. The disclosed method incorporates alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars into a cellular glycoconjugate. A chemical probe comprising an azide group and a visual probe or a fluorogenic probe is used to label the alkyne-derivatized sugar-tagged glycoconjugate. In one aspect, the chemical probe binds covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and is visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA or confocal microscopy, and mass spectrometry.Type: ApplicationFiled: May 17, 2019Publication date: September 5, 2019Inventors: Chi-Huey WONG, Tsui-Ling HSU, Sarah R. HANSON, Masaaki SAWA
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Patent number: 10317393Abstract: Methods for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates are disclosed. Alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars are incorporated into cellular glycoconjugates. Chemical probes comprising an azide group and a visual or fluorogenic probe and used to label alkyne-derivatized sugar-tagged glycoconjugates are disclosed. Chemical probes bind covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and are visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA, confocal microscopy, and mass spectrometry.Type: GrantFiled: October 10, 2017Date of Patent: June 11, 2019Assignee: ACADEMIA SINICAInventors: Chi-Huey Wong, Tsui-Ling Hsu, Sarah R. Hanson, Masaaki Sawa
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Patent number: 9974795Abstract: Provided is a pharmaceutical composition comprising a Cdc7 inhibitor and an M phase promoter. In particular, the Cdc7 inhibitor contained in the pharmaceutical composition is a furanone derivative represented by formula (I), or a pharmaceutically acceptable salt thereof. (In the formula, A is —COOR1 or a hydrogen atom; R1 is a hydrogen atom, an optionally substituted hydrocarbon group, or an optionally substituted heterocycle; R2 and R3 are the same or different and are each a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted phenyl group, an optionally substituted heterocycle, an optionally substituted heterocyclic condensed ring, or an optionally substituted amino group. Alternatively, R2 and R3 may, together with the nitrogen atoms bonding the same, form an optionally substituted heterocycle or optionally substituted heterocyclic condensed ring. R4 is a hydrogen atom or halogen atom.Type: GrantFiled: January 26, 2015Date of Patent: May 22, 2018Assignee: CARNA BIOSCIENCES, INC.Inventors: Yoko Funakoshi, Chika Tanaka, Tokiko Asami, Masaaki Sawa
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Publication number: 20180106780Abstract: Methods for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates are disclosed. Alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars are incorporated into cellular glycoconjugates. Chemical probes comprising an azide group and a visual or fluorogenic probe and used to label alkyne-derivatized sugar-tagged glycoconjugates are disclosed. Chemical probes bind covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and are visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA, confocal microscopy, and mass spectrometry.Type: ApplicationFiled: October 10, 2017Publication date: April 19, 2018Inventors: Chi-Huey WONG, Tsui-Ling HSU, Sarah R. Hanson, Masaaki SAWA
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Patent number: 9816981Abstract: Methods for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates are disclosed. Alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars are incorporated into cellular glycoconjugates. Chemical probes comprising an azide group and a visual or fluorogenic probe and used to label alkyne-derivatized sugar-tagged glycoconjugates are disclosed. Chemical probes bind covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and are visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA, confocal microscopy, and mass spectrometry.Type: GrantFiled: June 13, 2011Date of Patent: November 14, 2017Assignee: ACADEMIA SINICAInventors: Masaaki Sawa, Chi-Huey Wong, Tsui-Ling Hsu, Sarah Hanson
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Patent number: 9682961Abstract: The present invention provides a quinazoline derivative represented by the following formula (I): wherein R1 and R2 represent a hydrogen atom, a halogen atom, or a lower alkyl group optionally having a substituent; Z represents a cycloalkyl group having a substituent or a cycloalkenyl group having a substituent; and Q represents a bicyclic heteroaryl group optionally having a substituent, or a pharmaceutically acceptable salt thereof. Since the compound has an inhibitory effect on the Wnt/?-catenin signaling pathway and exhibits an antitumor effect, it is useful as a medicine.Type: GrantFiled: December 5, 2014Date of Patent: June 20, 2017Assignees: CARNA BIOSCIENCES, INC., NATIONAL CANCER CENTERInventors: Hideki Moriyama, Masaaki Sawa, Yuko Uno, Shigeki Kashimoto, Tesshi Yamada
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Patent number: 9656995Abstract: The purpose of the present invention is to provide a novel triazine derivative of the formula (I): wherein R1 represents a substituted or unsubstituted lower alkyl group, R2 represents a hydrogen atom or a substituted or unsubstituted lower alkyl group, A represents a nitrogen atom or C—R3, R3 represents a hydrogen atom, a cyano group, a substituted or unsubstituted acyl group, a substituted or unsubstituted sulfonyl group, or a substituted or unsubstituted carbamoyl group, and R4 represents a substituted or unsubstituted lower alkyl group, or a substituted or unsubstituted cycloalkyl group, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: July 15, 2014Date of Patent: May 23, 2017Assignee: CARNA BIOSCIENCES, INC.Inventors: Wataru Kawahata, Tokiko Asami, Masaaki Sawa, Yuko Asamitsu, Takayuki Irie, Takahiro Miyake, Takao Kiyoi
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Publication number: 20170065609Abstract: Provided is a pharmaceutical composition comprising a Cdc7 inhibitor and an M phase promoter. In particular, the Cdc7 inhibitor contained in the pharmaceutical composition is a furanone derivative represented by formula (I), or a pharmaceutically acceptable salt thereof. (In the formula, A is —COOR1 or a hydrogen atom; R1 is a hydrogen atom, an optionally substituted hydrocarbon group, or an optionally substituted heterocycle; R2 and R3 are the same or different and are each a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted phenyl group, an optionally substituted heterocycle, an optionally substituted heterocyclic condensed ring, or an optionally substituted amino group. Alternatively, R2 and R3 may, together with the nitrogen atoms bonding the same, form an optionally substituted heterocycle or optionally substituted heterocyclic condensed ring. R4 is a hydrogen atom or halogen atom.Type: ApplicationFiled: January 26, 2015Publication date: March 9, 2017Inventors: Yoko FUNAKOSHI, Chika TANAKA, Tokiko ASAMI, Masaaki SAWA
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Publication number: 20160264555Abstract: The present invention provides a quinazoline derivative represented by the following formula (I): wherein R1 and R2 represent a hydrogen atom, a halogen atom, or a lower alkyl group optionally having a substituent; Z represents a cycloalkyl group having a substituent or a cycloalkenyl group having a substituent; and Q represents a bicyclic heteroaryl group optionally having a substituent, or a pharmaceutically acceptable salt thereof. Since the compound has an inhibitory effect on the Wnt/?-catenin signaling pathway and exhibits an antitumor effect, it is useful as a medicine.Type: ApplicationFiled: December 5, 2014Publication date: September 15, 2016Applicants: NATIONAL CANCER CENTER, CARNA BIOSCIENCES, INC.Inventors: Hideki MORIYAMA, Masaaki SAWA, Yuko UNO, Shigeki KASHIMOTO, Tesshi YAMADA
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Patent number: RE46815Abstract: To provide a novel furanone derivative, and a medicine including the same.Type: GrantFiled: June 2, 2016Date of Patent: May 1, 2018Assignee: Carna Biosciences, Inc.Inventors: Takayuki Irie, Ayako Sawa, Masaaki Sawa, Tokiko Asami, Yoko Funakoshi, Chika Tanaka
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Patent number: RE48140Abstract: To provide a novel furanone derivative, and a medicine including the same.Type: GrantFiled: April 30, 2018Date of Patent: August 4, 2020Assignee: CARNA BIOSCIENCES, INC.Inventors: Takayuki Irie, Ayako Sawa, Masaaki Sawa, Tokiko Asami, Yoko Funakoshi, Chika Tanaka