Patents by Inventor Keizo Sugasawa
Keizo Sugasawa 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: 10301286Abstract: To provide a compound which can be used as an MC4 receptor agonist. The present inventors have investigated MC4 receptor agonists, and have found that a piperazine derivative has an action related to the agonists, thereby completing the present invention. That is, the piperazine derivative of the present invention has an MC4 receptor agonistic action, and can be used as an agent for preventing or treating bladder and/or urinary tract diseases, in particular, underactive bladder, hypotonic bladder, acontractile bladder, detrusor underactivity, neurogenic bladder, urethral relaxation failure, detrusor-external urethral sphincter dyssynergia, and voiding dysfunctions in benign prostatic hyperplasia.Type: GrantFiled: August 2, 2016Date of Patent: May 28, 2019Assignee: Astellas Pharma Inc.Inventors: Takashi Sugane, Takuya Makino, Daisuke Yamashita, Yasuhiro Yonetoku, Daisuke Tanabe, Hisashi Mihara, Norio Asai, Kazuhiko Osoda, Takafumi Shimizu, Hiroyuki Moritomo, Keizo Sugasawa, Kyoichi Maeno, Naomi Hosogai
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Publication number: 20180230131Abstract: [Problem] To provide a compound which can be used as an MC4 receptor agonist. [Means for Solution] The present inventors have investigated MC4 receptor agonists, and have found that a piperazine derivative has an action related to the agonists, thereby completing the present invention. That is, the piperazine derivative of the present invention has an MC4 receptor agonistic action, and can be used as an agent for preventing or treating bladder and/or urinary tract diseases, in particular, underactive bladder, hypotonic bladder, acontractile bladder, detrusor underactivity, neurogenic bladder, urethral relaxation failure, detrusor-external urethral sphincter dyssynergia, and voiding dysfunctions in benign prostatic hyperplasia.Type: ApplicationFiled: August 2, 2016Publication date: August 16, 2018Applicant: Astellas Pharma Inc.Inventors: Takashi SUGANE, Takuya MAKINO, Daisuke YAMASHITA, Yasuhiro YONETOKU, Daisuke TANABE, Hisashi MIHARA, Norio ASAI, Kazuhiro OSODA, Takafumi SHIMIZU, Hiroyuki MORITOMO, Keizo SUGASAWA, Kyoichi MAENO, Naomi HOSAGAI
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Patent number: 8765764Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.Type: GrantFiled: November 15, 2012Date of Patent: July 1, 2014Assignee: Astellas Pharma, Inc.Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-Ichi Suzuki
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Patent number: 8338429Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.Type: GrantFiled: November 10, 2009Date of Patent: December 25, 2012Assignee: Astellas Pharma, Inc.Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-ichi Suzuki
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Patent number: 8304547Abstract: [Object] To provide a therapeutic and/or prophylactic agent for urinary frequency, urinary urgency, and urinary incontinence associated with various lower urinary tract diseases including overactive bladder, various lower urinary tract diseases accompanied by lower urinary tract pain, such as interstitial cystitis, chronic prostatitis, and the like, and various diseases accompanied by pain, based on an excellent trkA receptor inhibitory action.Type: GrantFiled: October 23, 2008Date of Patent: November 6, 2012Assignee: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Kenichi Kawaguchi, Takaho Nomura, Shunichiro Matsumoto, Takashi Shin, Hidenori Azami, Tomoaki Abe, Akira Suga, Ryushi Seo, Masayuki Tanahashi, Toru Watanabe
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Patent number: 8163746Abstract: Provided is an agent for treating or preventing urinary frequency, urinary urgency and urinary, incontinence which are associated with overactive bladder, a lower urinary tract disease such as interstitial cystitis and chronic prostatitis accompanied by lower urinary tract pain, and various diseases accompanied by pain. A novel azolecarboxamide derivative in which an azole ring such as thioazole or oxazole is bonded to a benzene ring, pyridine ring or pyrimidine ring through carboxamide was confirmed to have a potent trkA receptor-inhibitory activity and found to be an agent for treating or preventing lower urinary tract disease and various diseases accompanied by pain, which is excellent in efficacy and safety, and thus the present invention was accomplished.Type: GrantFiled: April 19, 2007Date of Patent: April 24, 2012Assignee: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Kenichi Kawaguchi, Takaho Matsuzawa, Ryushi Seo, Hironori Harada, Akira Suga, Tomoaki Abe, Hidenori Azami, Shunichiro Matsumoto, Takashi Shin, Masayuki Tanahashi, Toru Watanabe
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Publication number: 20100249088Abstract: [Object] To provide a therapeutic and/or prophylactic agent for urinary frequency, urinary urgency, and urinary incontinence associated with various lower urinary tract diseases including overactive bladder, various lower urinary tract diseases accompanied by lower urinary tract pain, such as interstitial cystitis, chronic prostatitis, and the like, and various diseases accompanied by pain, based on an excellent trkA receptor inhibitory action.Type: ApplicationFiled: October 23, 2008Publication date: September 30, 2010Applicant: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Kenichi Kawaguchi, Takaho Nomura, Shunichiro Matsumoto, Takashi Shin, Hidenori Azami, Tomoaki Abe, Akira Suga, Ryushi Seo, Masayuki Tanahashi, Toru Watanabe
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Publication number: 20100222361Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.Type: ApplicationFiled: November 10, 2009Publication date: September 2, 2010Applicant: Astellas Pharma Inc.Inventors: Keizo SUGASAWA, Susumu WATANUKI, Yuji KOGA, Hiroshi NAGATA, Ryutaro WAKAYAMA, Fukushi HIRAYAMA, Ken-ichi SUZUKI
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Publication number: 20100222329Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.Type: ApplicationFiled: November 10, 2009Publication date: September 2, 2010Applicant: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-ichi Suzuki
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Patent number: 7786106Abstract: There are provided compounds having an anticoagulant action on the basis of inhibition of activated blood coagulation factor X and being useful as anticoagulants or preventive/therapeutic agents for diseases induced by thrombosis or embolism. Effective ingredients are the compounds such as 4?-bromo-2?-[(5-chloro-2-pyridyl) carbamoyl]-6?-?-D-galactopyranosyloxy-1-isopropylpiperidine-4-carboxanilide, 2?-(2-acetamido-2-deoxy-?-D-glucopyranosyloxy)-4?-bromo-6?-[(5-chloro-2-pyridyl)carbamoyl]-1-isopropylpiperidine-4-carboxanilide, etc. or salts thereof.Type: GrantFiled: January 20, 2009Date of Patent: August 31, 2010Assignee: Astellas Pharma Inc.Inventors: Tsukasa Ishihara, Fukushi Hirayama, Keizo Sugasawa, Yuji Koga, Takeshi Kadokura, Takeshi Shigenaga
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Publication number: 20100041668Abstract: The present invention in certain embodiments is directed to a pharmaceutical dosage form comprising a therapeutically effective amount of a first agent that agonizes a human TPO receptor by binding to the rhTPO binding site of the human TPO receptor; and a therapeutically effective amount of a second agent that agonizes the human TPO receptor by binding to a binding site of the human TPO receptor distinct from the rhTPO binding site.Type: ApplicationFiled: August 19, 2009Publication date: February 18, 2010Applicant: Astellas Pharma Inc.Inventors: Ken-Ichi Suzuki, Keizo Sugasawa
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Patent number: 7638536Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.Type: GrantFiled: January 15, 2003Date of Patent: December 29, 2009Assignee: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Kazuyoshi Obitsu, Ryutaro Wakayama, Fukushi Hirayama, Ken-ichi Suzuki
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Publication number: 20090286766Abstract: Provided is an agent for treating or preventing urinary frequency, urinary urgency and urinary, incontinence which are associated with overactive bladder, a lower urinary tract disease such as interstitial cystitis and chronic prostatitis accompanied by lower urinary tract pain, and various diseases accompanied by pain. A novel azolecarboxamide derivative in which an azole ring such as thioazole or oxazole is bonded to a benzene ring, pyridine ring or pyrimidine ring through carboxamide was confirmed to have a potent trkA receptor-inhibitory activity and found to be an agent for treating or preventing lower urinary tract disease and various diseases accompanied by pain, which is excellent in efficacy and safety, and thus the present invention was accomplished.Type: ApplicationFiled: April 19, 2007Publication date: November 19, 2009Applicant: ASTELLAS PHARMA INC.Inventors: Keizo Sugasawa, Kenichi Kawaguchi, Takaho Matsuzawa, Ryushi Seo, Hironori Harada, Akira Suga, Tomoaki Abe, Hidenori Azami, Shunichiro Matsumoto, Takashi Shin, Masayuki Tanahashi, Toru Watanabe
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Publication number: 20090137498Abstract: There are provided compounds having an anticoagulant action on the basis of inhibition of activated blood coagulation factor X and being useful as anticoagulants or preventive/therapeutic agents for diseases induced by thrombosis or embolism. Effective ingredients are the compounds such as 4?-bromo-2?-[(5-chloro-2-pyridyl)carbamoyl]-6?-?-D-galactopyranosyloxy-1-isopropylpiperidine-4-carboxanilide, 2?-(2-acetamido-2-deoxy-?-D-glucopyranosyloxy)-4?-bromo-6?-[(5-chloro-2-pyridyl)carbamoyl]-1-isopropylpiperidine-4-carboxanilide, etc. or salts thereof.Type: ApplicationFiled: January 20, 2009Publication date: May 28, 2009Applicant: ASTELLAS PHARMA INC.Inventors: Tsukasa Ishihara, Fukushi Hirayama, Keizo Sugasawa, Yuji Koga, Takeshi Kadokura, Takeshi Shigenaga
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Patent number: 7504417Abstract: There are provided compounds having an anticoagulant action on the basis of inhibition of activated blood coagulation factor X and being useful as anticoagulants or preventive/therapeutic agents for diseases induced by thrombosis or embolism. Effective ingredients are the compounds such as 4?-bromo-2?-[(5-chloro-2-pyridyl)carbamoyl]-6?-?-D-galactopyranosyloxy-1-isopropylpiperidine-4-carboxanilide, 2?-(2-acetamido-2-deoxy-?-D-glucopyranosyloxy)-4?-bromo-6?-[(5-chloro-2-pyridyl)carbamoyl]-1-isopropylpiperidine-4-carboxanilide, etc. or salts thereof.Type: GrantFiled: November 21, 2001Date of Patent: March 17, 2009Assignee: Astellas Pharma Inc.Inventors: Tsukasa Ishihara, Fukushi Hirayama, Keizo Sugasawa, Yuji Koga, Takeshi Kadokura, Takeshi Shigenaga
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Patent number: 7361658Abstract: 2-Acylaminothiazole derivatives or salts thereof which have a platelet increasing activity based on an excellent human c-mpl-Ba/F3 cell growth function and a function of accelerating formation of megakaryocytic colonies and which are useful for treating thrombocytopenia are provided.Type: GrantFiled: July 15, 2004Date of Patent: April 22, 2008Assignee: Astellas Pharma Inc.Inventors: Keizo Sugasawa, Yuji Koga, Kazuyoshi Obitsu, Takao Okuda, Koichiro Harada, Hideki Kubota, Fukushi Hirayama, Masaki Abe, Ken-ichi Suzuki
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Patent number: 7307074Abstract: To provide a compound which has an anticoagulation action based upon inhibition of activated blood coagulation factor X and is useful as an anticoagulant or an agent for prevention and treatment of diseases caused by thrombus or embolus. A diazepan derivative such as 4-[(3-carbamimidoylphenylamino)methyl]-3-[4-(4-methyl-1,4-diazepan-1-yl)benzoylamino]benzoic acid and 3-hydroxy-4?-methoxy-2-{[4-(4-methyl-1,4-diazepan-1-yl)benzoyl]amino}benzanilide or a salt thereof is an effective ingredient.Type: GrantFiled: September 8, 2003Date of Patent: December 11, 2007Assignee: Astellas Pharma Inc.Inventors: Fukushi Hirayama, Hiroyuki Koshio, Tsukasa Ishihara, Norio Seki, Shunichiro Hachiya, Keizo Sugasawa, Ryota Shiraki, Yuji Koga, Yuzo Matsumoto, Takeshi Shigenaga, Souichirou Kawazoe
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Patent number: 7285554Abstract: Drugs, in particular, pyrazole derivatives represented by the following general formula (I) which have a calcium release-activated calcium channel inhibitory effect and medicinal compositions, in particular, calcium release-activated calcium channel inhibitors containing the above compounds as the active ingredient, (in the formula, each symbol has the following meaning: D: pyrazolyl which may have 1 to 3 substituents selected from the group consisting of -Alk, -lower alkenyl, -lower alkynyl, -halogeno-lower alkyl, -Alk-cycloalkyl, -Alk-O-Alk, -cycloalkyl, —O-Alk, —COOH, —COO-Alk and -Hal, n: 0 or 1, B: phenylene, a nitrogen-containing, divalent, saturated ring group, or a monocyclic, divalent heteroaromatic ring group which may be substituted with Alk, X: —NR1—CR2R3—, —CR2R3—NR1—, —NR1—SO2—, —SO2—NR1— or —CR4?CR5—, and A: benzene ring which may have one or more substituents; mono-, di- or tricyclic fused heteroaryl which may have one or more substituents; cycloalkyl which may have one or more substiType: GrantFiled: April 7, 2006Date of Patent: October 23, 2007Assignee: Astellas Pharma Inc.Inventors: Hirokazu Kubota, Yasuhiro Yonetoku, Keizo Sugasawa, Masashi Funatsu, Souichirou Kawazoe, Akira Toyoshima, Yoshinori Okamoto, Jun Ishikawa, Makoto Takeuchi
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Publication number: 20070203153Abstract: The present invention in certain embodiments is directed to a pharmaceutical dosage form comprising a therapeutically effective amount of a first agent that agonizes a human TPO receptor by binding to the rhTPO binding site of the human TPO receptor; and a therapeutically effective amount of a second agent that agonizes the human TPO receptor by binding to a binding site of the human TPO receptor distinct from the rhTPO binding site.Type: ApplicationFiled: November 7, 2006Publication date: August 30, 2007Applicant: Astellas Pharma Inc.Inventors: Ken-Ichi Suzuki, Keizo Sugasawa
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Patent number: RE43481Abstract: To provide a compound which has an anticoagulation action based upon inhibition of activated blood coagulation factor X and is useful as an anticoagulant or an agent for prevention and treatment of diseases caused by thrombus or embolus. A diazepan derivative such as 4-[(3-carbamimidoylphenylamino)methyl]-3-[4-(4-methyl-1,4-diazepan-1-yl)benzoylamino]benzoic acid and 3-hydroxy-4?-methoxy-2-{[4-(4-methyl-1,4-diazepan-1-yl)benzoyl]amino}benzanilide or a salt thereof is an effective ingredient.Type: GrantFiled: September 3, 2008Date of Patent: June 19, 2012Assignee: Astellas Pharma Inc.Inventors: Fukushi Hirayama, Hiroyuki Koshio, Tsukasa Ishihara, Norio Seki, Shunichiro Hachiya, Keizo Sugasawa, Ryota Shiraki, Yuji Koga, Yuzo Matsumoto, Takeshi Shigenaga, Souichirou Kawazoe