Patents by Inventor Aki Yokomizo
Aki Yokomizo 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: 8952010Abstract: A compound represented by the following formula (I) or a salt thereof: wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom Ar1 represents a bicyclic heterocyclic group represented by the following formula: ?and Ar2 represents a bicyclic heterocyclic group represented by the following formulae:Type: GrantFiled: February 6, 2012Date of Patent: February 10, 2015Assignee: Daiichi Sankyo Company, LimitedInventors: Hiroaki Inagaki, Tetsunori Fujisawa, Masao Itoh, Aki Yokomizo, Toshifumi Tsuda, Saito Higuchi, Biswajit Das, Rita Katoch, Dilip J. Upadhyay
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Patent number: 8927588Abstract: To develop an antibiotic having a novel mechanism of action, the present inventors have searched for a compound that has weak cytotoxicity, the physical property of high solubility in water, the effect of inhibiting both DNA gyrase GyrB and topoisomerase IV ParE subunits, and sufficient antibacterial activity. As a result, the present inventors have completed the present invention by finding that a compound of the present invention represented by the general formula (1), a pharmacologically acceptable salt thereof, and a prodrug thereof have desirable properties. The present invention provides a pharmaceutical composition (particularly, a preventive or therapeutic composition for infectious disease) comprising a compound represented by the formula (1), a pharmacologically acceptable salt thereof, or a prodrug thereof as an active ingredient.Type: GrantFiled: September 13, 2013Date of Patent: January 6, 2015Assignee: Daiichi Sankyo Company, LimitedInventors: Tsuyoshi Soneda, Hiroshi Takeshita, Yoshiko Kagoshima, Yuko Yamamoto, Takafumi Hosokawa, Toshiyuki Konosu, Nobuhisa Masuda, Takuya Uchida, Issei Achiwa, Junichi Kuroyanagi, Tetsunori Fujisawa, Aki Yokomizo, Tetsuji Noguchi
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Publication number: 20140187542Abstract: A compound represented by the following formula (I) or a salt thereof: wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom Ar1 represents a bicyclic heterocyclic group represented by the following formula: and Ar2 represents a bicyclic heterocyclic group represented by the following formulae:Type: ApplicationFiled: February 6, 2012Publication date: July 3, 2014Applicant: DAIICHI SANKYO COMPANY, LIMITEDInventors: Hiroaki Inagaki, Tetsunori Fujisawa, Masao Itoh, Aki Yokomizo, Toshifumi Tsuda, Saito Higuchi, Biswajit Das, Rita Katoch, Dilip J. Upadhyay
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Publication number: 20140073622Abstract: To develop an antibiotic having a novel mechanism of action, the present inventors have searched for a compound that has weak cytotoxicity, the physical property of high solubility in water, the effect of inhibiting both DNA gyrase GyrB and topoisomerase IV ParE subunits, and sufficient antibacterial activity. As a result, the present inventors have completed the present invention by finding that a compound of the present invention represented by the general formula (1), a pharmacologically acceptable salt thereof, and a prodrug thereof have desirable properties. The present invention provides a pharmaceutical composition (particularly, a preventive or therapeutic composition for infectious disease) comprising a compound represented by the formula (1), a pharmacologically acceptable salt thereof, or a prodrug thereof as an active ingredient.Type: ApplicationFiled: September 13, 2013Publication date: March 13, 2014Applicant: Daiichi Sankyo Company, LimitedInventors: Tsuyoshi Soneda, Hiroshi Takeshita, Yoshiko Kagoshima, Yuko Yamamoto, Takafumi Hosokawa, Toshiyuki Konosu, Nobuhisa Masuda, Takuya Uchida, Issei Achiwa, Junichi Kuroyanagi, Tetsunori Fujisawa, Aki Yokomizo, Tetsuji Noguchi
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Patent number: 8536197Abstract: An antibiotic compound having a novel mechanism of action, weak cytotoxicity, high solubility in water, effective in inhibiting both DNA gyrase GyrB and topoisomerase IV ParE subunits, and having antibacterial activity.Type: GrantFiled: December 26, 2008Date of Patent: September 17, 2013Assignee: Daiichi Sankyo Company, LimitedInventors: Tsuyoshi Soneda, Hiroshi Takeshita, Yoshiko Kagoshima, Yuko Yamamoto, Takafumi Hosokawa, Toshiyuki Konosu, Nobuhisa Masuda, Takuya Uchida, Issei Achiwa, Junichi Kuroyanagi, Tetsunori Fujisawa, Aki Yokomizo, Tetsuji Noguchi
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Publication number: 20110053933Abstract: The present invention provides a novel hydroxyquinoxaline carboxamide derivative that is useful for preventing and/or treating blood coagulation disorders. A compound represented by formula (i), or a pharmacologically acceptable salt thereof: wherein, each of R1 and R2 independently represents a group such as a hydrogen atom or a halogen atom; R3 represents a group such as a hydrogen atom; each of R4 and R5 independently represents a group such as a hydrogen atom, a halogen atom or a C1-4 alkyl group; each of R6 and R7 independently represents a hydrogen atom or a C1-4 alkyl group; X represents a group such as a C3-10 cycloalkyl group, C6-10 aryl group or a 5- to 10-membered heterocyclic group, which may be substituted with substituent(s) selected from substituent group ?; Y represents a group such as —CO—, —O— or —NRa—, and Ra represents a group such as a hydrogen atom or a C1-4 alkyl group.Type: ApplicationFiled: March 24, 2009Publication date: March 3, 2011Applicant: DAIICHI SANKYO COMPANY, LIMITEDInventors: Kayoko Motoki, Kiichi Kawagoe, Shigeyuki Nishinaka, Sachie Masuda, Atsunobu Sakamoto, Satoru Kaneko, Tsuyoshi Arita, Aki Yokomizo
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Publication number: 20100311966Abstract: An antibiotic compound having a novel mechanism of action, weak cytotoxicity, high solubility in water, effective in inhibiting both DNA gyrase GyrB and topoisomerase IV ParE subunits, and having antibacterial activity.Type: ApplicationFiled: December 26, 2008Publication date: December 9, 2010Applicant: DAIICHI SANKYO COMPANY, LIMITEDInventors: Tsuyoshi Soneda, Hiroshi Takeshita, Yoshiko Kagoshima, Yuko Yamamoto, Takafumi Hosokawa, Toshiyuki Konosu, Nobuhisa Masuda, Takuya Uchida, Issei Achiwa, Junichi Kuroyanagi, Tetsunori Fujisawa, Aki Yokomizo, Tetsuji Noguchi
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Patent number: 5919824Abstract: Aminophenol derivatives represented by the following formula (1): ##STR1## wherein X is O or S; A is alkylene, R.sup.1 is phenyl, etc., R.sup.2 and R.sup.3 are H or alkyl; R.sup.4 is substituted carbamoylalkyl, etc.; R.sup.5 is substituted amino, etc.; their salts, and optical isomers of the derivatives and salts. Also disclosed are gastrin receptor antagonists, cholecystokinin receptor antagonists, and medicines for digestive diseases. The compounds have strong binding inhibition against gastrin receptor or CCK-A receptor and also they have higher selectivity to either group of CCK-A receptor or gastrin receptor, and therefore, the compounds are useful for preventing and treating gastrointestinal diseases including peptic ulcers as well as central nervous system diseases.Type: GrantFiled: September 12, 1997Date of Patent: July 6, 1999Assignee: Daiichi Pharmaceutical Co., Ltd.Inventors: Shuichi Yokohama, Keiichi Kawagoe, Yasuyuki Takeda, Yoshihiro Yokomizo, Aki Yokomizo