Patents by Inventor Koh Nagasawa
Koh Nagasawa 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: 9650380Abstract: A compound having an URAT1 inhibitory activity, and an URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition containing the compound. More specifically, a compound represented by the formula (I): wherein R1 is -Q1-A1 or the like; R2 is a hydrogen atom, a halogen atom, a lower alkyl group or the like; W1, W2, W3 and W4 are each independently a nitrogen atom or a methine group optionally having substituents, or the like; X and Y are each a single bond, an oxygen atom or the like; Z is a hydroxyl group or COOR3 or the like.Type: GrantFiled: October 27, 2016Date of Patent: May 16, 2017Assignee: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita Nagai, Motoaki Baba, Shinichi Fujioka, Koh Nagasawa, Hirobumi Takahashi, Eri Kondoh, Sachie Sogo, Kenichi Tanaka, Yoshiki Itoh
-
Publication number: 20170044158Abstract: A compound having an URAT1 inhibitory activity, and an URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition containing the compound. More specifically, a compound represented by the formula (I): wherein R1 is -Q1-A1 or the like; R2 is a hydrogen atom, a halogen atom, a lower alkyl group or the like; W1, W2, W3 and W4 are each independently a nitrogen atom or a methine group optionally having substituents, or the like; X and Y are each a single bond, an oxygen atom or the like; Z is a hydroxyl group or COOR3 or the like.Type: ApplicationFiled: October 27, 2016Publication date: February 16, 2017Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita NAGAI, Motoaki BABA, Shinichi FUJIOKA, Koh NAGASAWA, Hirobumi TAKAHASHI, Eri KONDOH, Sachie SOGO, Kenichi TANAKA, Yoshiki ITOH
-
Patent number: 9512119Abstract: The present invention relates to a compound having an URAT1 inhibitory activity, and to an URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition containing the compound. More specifically, the present invention relates to a compound represented by the formula (I): wherein R1 is -Q1-A1 or the like; R2 is a hydrogen atom, a halogen atom, a lower alkyl group or the like; W1, W2, W3 and W4 are each independently a nitrogen atom or a methine group optionally having substituents, or the like; X and Y are each a single bond, an oxygen atom or the like; Z is a hydroxyl group or COOR3 or the like.Type: GrantFiled: July 26, 2013Date of Patent: December 6, 2016Assignee: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita Nagai, Motoaki Baba, Shinichi Fujioka, Koh Nagasawa, Hirobumi Takahashi, Eri Kondoh, Sachie Sogo, Kenichi Tanaka, Yoshiki Itoh
-
Patent number: 9359350Abstract: The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.Type: GrantFiled: February 11, 2015Date of Patent: June 7, 2016Assignee: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita Nagai, Koh Nagasawa, Hirobumi Takahashi, Motoaki Baba, Shinichi Fujioka, Eri Kondoh, Kenichi Tanaka, Yoshiki Itoh
-
Publication number: 20150203490Abstract: The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.Type: ApplicationFiled: February 11, 2015Publication date: July 23, 2015Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita NAGAI, Koh NAGASAWA, Hirobumi TAKAHASHI, Motoaki BABA, Shinichi FUJIOKA, Eri KONDOH, Kenichi TANAKA, Yoshiki ITOH
-
Publication number: 20150191463Abstract: The present invention relates to a compound having an URAT1 inhibitory activity, and to an URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition containing the compound. More specifically, the present invention relates to a compound represented by the formula (I): wherein R1 is -Q1-A1 or the like; R2 is a hydrogen atom, a halogen atom, a lower alkyl group or the like; W1, W2, W3 and W4 are each independently a nitrogen atom or a methine group optionally having substituents, or the like; X and Y are each a single bond, an oxygen atom or the like; Z is a hydroxyl group or COOR3 or the like.Type: ApplicationFiled: July 26, 2013Publication date: July 9, 2015Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita Nagai, Motoaki Baba, Shinichi Fujioka, Koh Nagasawa, Hirobumi Takahashi, Eri Kondoh, Sachie Sogo, Kenichi Tanaka, Yoshiki Itoh
-
Patent number: 8987473Abstract: The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.Type: GrantFiled: January 30, 2012Date of Patent: March 24, 2015Assignee: Sato Pharmaceutical Co., Ltd.Inventors: Keita Nagai, Koh Nagasawa, Hirobumi Takahashi, Motoaki Baba, Shinichi Fujioka, Eri Kondoh, Kenichi Tanaka, Yoshiki Itoh
-
Publication number: 20140005221Abstract: The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.Type: ApplicationFiled: January 30, 2012Publication date: January 2, 2014Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Keita Nagai, Koh Nagasawa, Hirobumi Takahashi, Motoaki Baba, Shinichi Fujioka, Eri Kondoh, Kenichi Tanaka, Yoshiki Itoh
-
Publication number: 20100055056Abstract: The present invention herein provides a compound which promotes drug-permeation into nails. A penetrating promoter comprises, for instance, the following formulas. R1, R2 and R3 are alkyl groups having a carbon number of 1 to 15 and have OH groups at their ends.Type: ApplicationFiled: September 4, 2008Publication date: March 4, 2010Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Masatoshi KATO, Hiroyuki KUSAKABE, Kazuhiro NIMURA, Hiroaki KIMURA, Koh NAGASAWA, Akihiro HASHIGUCHI, Chisato HIROSAWA, Tomohiro TADA
-
Patent number: 7223773Abstract: The present invention provides a 4-oxoquinolizine antibacterial agent having a 2-pyridone skeleton as a partial structure and also having a strong antibacterial effect on gram-positive bacteria, gram-negative bacteria or anaerobic bacteria. The compound having the following formula (I) or a pharmaceutically acceptable salt thereof: wherein: R1 represents hydrogen atom or a carboxyl-protecting group, R2 represents hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxyl group or hydroxyl group, R3 represents phenyl group or an aromatic substituent selected from the group consisting of 5-membered and 6-membered heterocyclic groups and R3 has a substituent selected from the group consisting of a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a nitro group, a cyano group, an amino group, an acyl group, a carbamoyl group and a ureido group, and R4 represents a hydrogen atom or a halogen atom.Type: GrantFiled: March 26, 2004Date of Patent: May 29, 2007Assignee: Salo Pharmaceutical Co., Ltd.Inventors: Ryoichi Fukumoto, Yoshimi Niwano, Hiroyuki Kusakabe, Chong Chu, Hiroaki Kimura, Koh Nagasawa, Satoshi Yanagihara, Chisato Hirosawa, Seiji Ishiduka
-
Publication number: 20040229903Abstract: The present invention provides a 4-oxoquinolizine antibacterial agent having a 2-pyridone skeleton as a partial structure and also having a strong antibacterial effect on gram-positive bacteria, gram-negative bacteria or anaerobic bacteria.Type: ApplicationFiled: March 26, 2004Publication date: November 18, 2004Applicant: SATO PHARMACEUTICAL CO., LTD.Inventors: Ryoichi Fukumoto, Yoshimi Niwano, Hiroyuki Kusakabe, Chong Chu, Hiroaki Kimura, Koh Nagasawa, Satoshi Yanagihara, Chisato Hirosawa, Seiji Ishiduka