Patents by Inventor Masateru Ohta
Masateru Ohta 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).
-
Patent number: 9487517Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.Type: GrantFiled: September 17, 2015Date of Patent: November 8, 2016Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
-
Publication number: 20160016956Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.Type: ApplicationFiled: September 17, 2015Publication date: January 21, 2016Applicant: Chugai Seiyaku Kabushiki KaishaInventors: Toru Esaki, Yoshikazu NISHIMURA, Yoshiaki ISSHIKI, Naoki OKAMOTO, Yoshiyuki FURUTA, Akemi MIZUTANI, Masateru OHTA, Wayne Wen LAI, Tomoya KOTAKE
-
Patent number: 9169254Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.Type: GrantFiled: April 27, 2010Date of Patent: October 27, 2015Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
-
Patent number: 8470829Abstract: An imidazole derivative represented by formula (I): wherein Q is: A is hydrogen, halogen, or a substituted or unsubstituted C1-4 alkyl group; E is independently selected from a C1-6 alkyl group; R2 and R3 are independently selected from C1-6 alkyls; X1 and X2 are independently selected from O and S; Y is selected from a substituted or unsubstituted arylene group and a substituted or unsubstituted divalent 5- or 6-membered monocyclic or 8- to 10-membered condensed heterocyclic group; Z is —CON(—Ra)—, —CO—, —OOO—, —NRa—C(?NH)NRb—, —NRa—C(?N—CN)NRb—, —N(—Ra)COO—, —C(?NH)—, —SO2—, —SO2N(—Ra)—, —SO2NR1—, —N(—Ra)CO—, —N(—Ra)CON(—Rb)—, —N(COR1)CO—, —N(—Ra)SO2—, —N(SO2R1)SO2—, —N(—Ra)— or —N(—Ra)SO2N(—Rb)—; R1 is independently a hydrogen atom, a hydroxyl group, or substituted or unsubstituted group selected from C1-6 alkyl group, heterocyclic group, aryl group, C3-8 cycloalkyl group and C3-8 cycloalkenyl group; or salt or prodrug thereof.Type: GrantFiled: September 9, 2005Date of Patent: June 25, 2013Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Hitoshi Yoshino, Takashi Emura, Akie Honma, Etsuro Onuma, Hiromitsu Kawata, Kenji Taniguchi
-
Publication number: 20120270838Abstract: The present invention relates to a compound represented by the following formula (1): wherein W, X, Y, R1, R2, R33, R34, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.Type: ApplicationFiled: April 27, 2010Publication date: October 25, 2012Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHAInventors: Toru Esaki, Yoshikazu Nishimura, Yoshiaki Isshiki, Naoki Okamoto, Yoshiyuki Furuta, Akemi Mizutani, Masateru Ohta, Wayne Wen Lai, Tomoya Kotake
-
Publication number: 20110306615Abstract: According to the present invention, a compound represented by formula (I): wherein Q is: A is a hydrogen atom, a halogen atom, —ORa or a C1-4 alkyl group which may be substituted by one or more halogen atoms; E is independently selected from a C1-6 alkyl group; m is selected from integers from 0 to 3; R2 and R3 are independently selected from a C1-6 alkyl group; X1 and X2 are independently selected from O and S; Y is selected from an arylene group and a divalent 5- or 6-membered monocyclic or 8- to 10-membered condensed heterocyclic group, wherein the arylene group and the heterocyclic group may be substituted by 1 to 3 substituents independently selected from E1; E1 is independently selected from a hydroxyl group, a halogen atom, a C1-4 alkyl group, a cyano group, a C1-4 alkoky group, a carbamoyl group, a C1-4 alkylcarbamoyl group, a di(C1-4 alkyl)carbamoyl group, an amino group, a C1-4 alkylamino group, a di(C1-4 alkylamino group, a sulfamoyl group, a C1-4 alkylsulfamoyl group and a di(C1-4 alkyl)suType: ApplicationFiled: September 9, 2005Publication date: December 15, 2011Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHAInventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Hitoshi Yoshino, Takashi Emura, Akie Honma, Etsuro Onuma, Hiromitsu Kawata, Kenji Taniguchi
-
Patent number: 7879887Abstract: The present invention provides novel ?-amino acid derivatives of formula (1): (wherein, R1, R2, R3, R4, X and Y are as defined in the claims) or pharmaceutically acceptable salts, prodrugs or solvates thereof. The derivatives of formula (1) have ?ARK1 inhibitory activity and are useful for preventing or treating heart failure. Moreover, the derivatives of formula (1) also have antitumor activity, particularly dual inhibitory activity on Aurora kinase and CDK, and are useful for cell proliferative diseases such as cancer.Type: GrantFiled: June 29, 2007Date of Patent: February 1, 2011Assignees: Nissan Chemical Industries, Ltd., Chugai Seiyaku Kabushiki KaishaInventors: Kazuhiko Ohrai, Michiaki Adachi, Koji Toyama, Takanori Shimizu, Keishi Hayashi, Masataka Minami, Yoshiyuki Suzuki, Masakazu Sugiyama, Masateru Ohta, Shojiro Kadono, Takuya Shiraishi, Haruhiko Sato, Yoshiaki Watanabe, Nobuya Ishii, Masahiro Sakaitani, Masami Hasegawa
-
Patent number: 7803826Abstract: The present invention provides a compound represented by formula (I): wherein n is an integer selected from 1 to 20, Q is A is cyano or the like; B is hydrogen, halogen, or the like; X1 and X2 are each independently selected from O and S; E is a C1-4 alkyl group; and R1, R2, R3 and R4 are each independently selected from a hydrogen atom and a C1-C6 alkyl group, and a drug, a pharmaceutical composition containing the compound, and the like.Type: GrantFiled: August 3, 2005Date of Patent: September 28, 2010Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Ikuhiro Imaoka, Hitoshi Yoshino, Masahiro Nagamuta, Hiromitsu Kawata
-
Publication number: 20090275623Abstract: The present invention provides novel ?-amino acid derivatives of formula (1): (wherein, R1, R2, R3, R4, X and Y are as defined in the claims) or pharmaceutically acceptable salts, prodrugs or solvates thereof. The derivatives of formula (1) have ?ARK1 inhibitory activity and are useful for preventing or treating heart failure. Moreover, the derivatives of formula (1) also have antitumor activity, particularly dual inhibitory activity on Aurora kinase and CDK, and are useful for cell proliferative diseases such as cancer.Type: ApplicationFiled: June 29, 2007Publication date: November 5, 2009Inventors: Kazuhiko Ohrai, Michiaki Adachi, Koji Toyama, Takanori Shimizu, Keishi Hayashi, Masataka Minami, Yoshiyuki Suzuki, Masakazu Sugiyama, Masateru Ohta, Shojiro Kadono, Takuya Shiraishi, Haruhiko Sato, Yoshiaki Watanabe, Nobuya Ishii, Masahiro Sakaitani, Masami Hasegawa
-
Publication number: 20070249697Abstract: The present invention provides a compound represented by formula (I): wherein n is an integer selected from 1 to 20, Q is A is cyano or the like; B is hydrogen, halogen, or the like; X1 and X2 are each independently selected from O and S; E is a C1-4 alkyl group; and R1, R2, R3 and R4 are each independently selected from a hydrogen atom and a C1-C6 alkyl group, and a drug, a pharmaceutical composition containing the compound, and the like.Type: ApplicationFiled: August 3, 2005Publication date: October 25, 2007Inventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Ikuhiro Imaoka, Hitoshi Yoshino, Masahiro Nagamuta, Hiromitsu Kawata
-
Patent number: 7271188Abstract: The present invention provides a compound represented by formula (I): [Formula 1] wherein n is an integer selected from 1 to 20, and R1 and R2, which may be the same or different, each represent a hydrogen atom, or a linear or branched C1-C6 alkyl group, or a salt, a prodrug or a solvate thereof, as well as a drug, a pharmaceutical composition containing the compound, and the like.Type: GrantFiled: June 11, 2004Date of Patent: September 18, 2007Assignee: Chugai Seikayu Kabushiki KaishaInventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Ikuhiro Imaoka, Hitoshi Yoshino, Masahiro Nagamuta, Hiromitsu Kawata
-
Publication number: 20060135583Abstract: The present invention provides a compound represented by formula (I): wherein n is an integer selected from 1 to 20, and R1 and R2, which may be the same or different, each represent a hydrogen atom, or a linear or branched C1-C6 alkyl group, or a salt, a prodrug or a solvate thereof, as well as a drug, a pharmaceutical composition containing the compound, and the like.Type: ApplicationFiled: June 11, 2004Publication date: June 22, 2006Applicant: Chugai Seiyaku Kabushiki KaishaInventors: Kazutaka Tachibana, Haruhiko Sato, Masateru Ohta, Mitsuaki Nakamura, Takuya Shiraishi, Ikuhiro Imaoka, Hitoshi Yoshino, Masahiro Nagamuta, Hiromitsu Kawata
-
Patent number: 7018993Abstract: A compound pf general formula (I): wherein, for example, X1 and X2 independently represent a hydrogen atom. Ra represents a hydrogen atom or a protecting group for a hydroxyl group. Rb and Rc form an optionally protected —(C?O)— together with the 3-position carbon atom attached to Rb and Rc, and the broken line forms a single bond or double bond together with the solid line, or a pharmaceutically acceptable salt of the compound or a prodrug thereof.Type: GrantFiled: July 2, 2001Date of Patent: March 28, 2006Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Masateru Ohta, Nobuaki Kato, Mitsuaki Nakamura, Kazutaka Tachibana
-
Publication number: 20030158164Abstract: A compound pf general formula (I): 1Type: ApplicationFiled: December 30, 2002Publication date: August 21, 2003Inventors: Masateru Ohta, Nobuaki Kato, Mitsuaki Nakamura, Kazutaka Tachibana