Patents by Inventor Masahiro Kajino
Masahiro Kajino 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: 10308605Abstract: A proton pump inhibitor containing a compound represented by the formula (I) wherein X and Y are the same or different and each is a bond or a spacer having 1 to 20 carbon atoms in the main chain, R1is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R2, R3 and R4 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted thienyl group, an optionally substituted benzo[b]thienyl group, an optionally substituted furyl group, an optionally substituted pyridyl group, an optionally substituted pyrazolyl group, an optionally substituted pyrimidinyl group, an acyl group, a halogen atom, a cyano group or a nitro group, R5 and R6 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, which has a superior proton pump action and shows an antiulcer activity and the like after conversion to a proton pump inhibitor in the body, or a salt thereof, or a prodrug therType: GrantFiled: August 1, 2014Date of Patent: June 4, 2019Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Naoki Tarui, Terufumi Takagi
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Patent number: 8933105Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity, which is represented by the formula (I) wherein R1 is an optionally substituted cyclic group, R2 is a substituent, R3 is an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, R4 and R5 are each a hydrogen atom, an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, R6 and R6? are each a hydrogen atom or an alkyl group, and n is an integer of 0-3, or a salt thereof.Type: GrantFiled: February 26, 2008Date of Patent: January 13, 2015Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Haruyuki Nishida, Yasuyoshi Arikawa, Keizo Hirase, Koji Ono
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Publication number: 20140343070Abstract: A proton pump inhibitor containing a compound represented by the formula (I) wherein X and Y are the same or different and each is a bond or a spacer having 1 to 20 carbon atoms in the main chain, R1 is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R2, R3 and R4 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted thienyl group, an optionally substituted benzo[b]thienyl group, an optionally substituted furyl group, an optionally substituted pyridyl group, an optionally substituted pyrazolyl group, an optionally substituted pyrimidinyl group, an acyl group, a halogen atom, a cyano group or a nitro group, R5 and R6 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, which has a superior proton pump action and shows an antiulcer activity and the like after conversion to a proton pump inhibitor in the body, or a salt thereof, or a prodrug theType: ApplicationFiled: August 1, 2014Publication date: November 20, 2014Applicant: TAKEDA PHARMACEUTICAL COMPANY LIMITEDInventors: Masahiro Kajino, Atsushi Hasuoka, Naoki Tarui, Terufumi Takagi
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Patent number: 8436187Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: June 8, 2011Date of Patent: May 7, 2013Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 8415368Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: January 26, 2009Date of Patent: April 9, 2013Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 8338461Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: March 1, 2011Date of Patent: December 25, 2012Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 8338462Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl pup, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: June 8, 2011Date of Patent: December 25, 2012Assignee: Takeda Pharmaceuticals Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 8299261Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: June 8, 2011Date of Patent: October 30, 2012Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Publication number: 20120088797Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl pup, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: ApplicationFiled: June 8, 2011Publication date: April 12, 2012Applicant: Takeda Pharmaceutical Company LimitedInventors: Masahiro KAJINO, Atsushi HASUOKA, Haruyuki NISHIDA
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Publication number: 20110301174Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl pup, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: ApplicationFiled: June 8, 2011Publication date: December 8, 2011Applicant: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Publication number: 20110301173Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: ApplicationFiled: June 8, 2011Publication date: December 8, 2011Applicant: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Publication number: 20110288040Abstract: The present invention provides a compound having a superior acid secretion inhibitory action, an antiulcer activity and the like.Type: ApplicationFiled: August 5, 2011Publication date: November 24, 2011Applicant: Takeda Pharmaceutical Company LimitedInventors: Atsushi Hasuoka, Terufumi Takagi, Masahiro Kajino, Haruyuki Nishida
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Patent number: 8048909Abstract: A proton pump inhibitor containing a compound represented by the formula (I) wherein X and Y are the same or different and each is a bond or a spacer having 1 to 20 carbon atoms in the main chain, R1 is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R2, R3 and R4 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted thienyl group, an optionally substituted benzo[b]thienyl group, an optionally substituted furyl group, an optionally substituted pyridyl group, an optionally substituted pyrazolyl group, an optionally substituted pyrimidinyl group, an acyl group, a halogen atom, a cyano group or a nitro group, R5 and R6 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, which has a superior proton pump action and shows an antiulcer activity and the like after conversion to a proton pump inhibitor in the body, or a salt thereof, or a prodrug theType: GrantFiled: September 30, 2005Date of Patent: November 1, 2011Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Terufumi Takagi
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Patent number: 7977488Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: GrantFiled: August 29, 2006Date of Patent: July 12, 2011Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 7973163Abstract: The present invention aims at provision of a quinoline derivative having a neurokinin 2 (NK2) receptor antagonistic action and relates to a compound represented by the formula (I) wherein R1 is a hydrogen atom and the like; R2 is a hydrogen atom, a hydrocarbon group optionally having substituent(s) and the like; R3 is unsubstituted (i.e., absence), a hydrogen atom and the like; R4 and R5 are the same or different and each is a hydrogen atom, a hydrocarbon group optionally having substituent(s), and the like; R6 is (cyclic group optionally having substituent(s))-carbonyl, and the like; R7, R8, R9 and R10 are the same or different and each is a hydrogen atom, halogen and the like; or R7 and R8, R8 and R9, and R9 and R10 may form a ring together with the adjacent carbon atoms; n is an integer of 1 to 5; --- represents unsubstituted (i.e., absence) or a single bond; and represents a single bond or a double bond, or a salt thereof, and the like.Type: GrantFiled: June 2, 2009Date of Patent: July 5, 2011Assignee: Takeda Pharmaceutical Company Ltd.Inventors: Masahiro Kajino, Yasuhiko Kawano
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Publication number: 20110144161Abstract: The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R2 is an optionally substituted C6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R3 and R4 are each a hydrogen atom, or one of R3 and R4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R5 is an alkyl group or a salt thereof.Type: ApplicationFiled: March 1, 2011Publication date: June 16, 2011Applicant: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Atsushi Hasuoka, Haruyuki Nishida
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Patent number: 7943770Abstract: The present invention aims at provision of a quinoline derivative having a neurokinin 2 (NK2) receptor antagonistic action and relates to a compound represented by the formula (I) wherein R1 is a hydrogen atom and the like; R2 is a hydrogen atom, a hydrocarbon group optionally having substituent(s) and the like; R3 is unsubstituted (i.e., absence), a hydrogen atom and the like; R4 and R5 are the same or different and each is a hydrogen atom, a hydrocarbon group optionally having substituent(s), and the like; R6 is (cyclic group optionally having substituent(s))-carbonyl, and the like; R7, R8, R9 and R10 are the same or different and each is a hydrogen atom, halogen and the like; or R7 and R8, R8 and R9, and R9 and R10 may form a ring together with the adjacent carbon atoms; n is an integer of 1 to 5; ?represents unsubstituted (i.e., absence) or a single bond; and ?represents a single bond or a double bond, or a salt thereof, and the like.Type: GrantFiled: June 2, 2009Date of Patent: May 17, 2011Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Yasuhiko Kawano
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Publication number: 20110028476Abstract: A proton pump inhibitor containing a compound represented by the formula (I) wherein X and Y are the same or different and each is a bond or a spacer having 1 to 20 carbon atoms in the main chain, R1 is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R2, R3 and R4 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted thienyl group, an optionally substituted benzo[b]thienyl group, an optionally substituted furyl group, an optionally substituted pyridyl group, an optionally substituted pyrazolyl group, an optionally substituted pyrimidinyl group, an acyl group, a halogen atom, a cyano group or a nitro group, R5 and R6 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, which has a superior proton pump action and shows an antiulcer activity and the like after conversion to a proton pump inhibitor in the body, or a salt thereof.Type: ApplicationFiled: September 1, 2010Publication date: February 3, 2011Inventors: Masahiro Kajino, Atsushi Hasuoka, Naoki Tarui, Terufumi Takagi
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Patent number: 7767665Abstract: This invention provides a compound represented by the formula (I): wherein R1 is a hydrogen atom, a halogen atom, hydroxy, nitro, optionally halogenated alkyl, alkoxy optionally having substituents, acyl or amino optionally having substituents; R2 is pyridyl, furyl, thienyl, pyrrolyl, quinolyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, tetrahydroquinolyl or thiazolyl, each of which may have substituents; n is 1 or 2; or a salt. And this invention provides a safe pharmaceutical comprising the compound of the formula (I), which has an excellent apoptosis inhibitory effect and MIF binding effect, for preventing and/or treating heart disease, nervous degenerative disease, cerebrovascular disease, central nervous infectious disease, traumatorathy, demyelinating disease, bone and articular disease, kidney disease, liver disease, osteomyelodysplasia, AIDS, cancer, and the like.Type: GrantFiled: April 8, 2008Date of Patent: August 3, 2010Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Yutaka Nakayama, Akira Kawada, Haruhide Kimura, Taisuke Tawaraishi
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Patent number: 7659267Abstract: As prophylactic and/or therapeutic agents for cardiovascular diseases, bone or joint diseases, infectious diseases, inflammatory diseases, kidney diseases, etc. having safe and excellent effects of cell death inhibition, MIF binding, etc., there are provided compounds represented by formula: [wherein, R1 represents a halogen atom, etc., R2 represents a group represented by formula: (wherein, R3 represents hydrogen atom, an optionally substituted alkoxy, etc., R4 represents hydrogen atom, bromine atom, cyano, etc., R5 represents hydrogen atom, hydroxy, etc., R6 represents hydrogen atom, etc., R7 represents hydrogen atom, etc.) etc., and n represents an integer of 0 to 4] or salts thereof.Type: GrantFiled: December 4, 2003Date of Patent: February 9, 2010Assignee: Takeda Pharmaceutical Company LimitedInventors: Masahiro Kajino, Yutaka Nakayama, Haruhide Kimura