Patents by Inventor Akio Kanatani
Akio Kanatani 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: 8268842Abstract: The present invention provides a compound represented by formula (I) below, or a pharmaceutically acceptable salt thereof, which, having histamine H3 receptor antagonist or inverse agonist activity, is useful in the prophylaxis or therapy of metabolic diseases, circulatory diseases, or nervous system diseases. [where, for example, Ar is a divalent group formed by eliminating two hydrogen atoms from benzene, X1 is a nitrogen atom, sulfur atom or oxygen atom, R1 is a 5- to 6-membered heteroaryl group, Ring A is a 5- to 6-membered heteroaryl ring, R2 and R3 are amino groups or alkylamino groups, and X2 is represented by formula (II): (where R4 and R5 are lower alkyl groups, and n is an integer from 2 to 4).Type: GrantFiled: February 11, 2009Date of Patent: September 18, 2012Assignee: MSD K.K.Inventors: Tsuyoshi Nagase, Nagaaki Sato, Akio Kanatani, Shigeru Tokita
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Patent number: 8044070Abstract: Provided are compounds of a formula (I) and their pharmaceutically-acceptable salts: wherein X1, X2 and X3 each independently represent N or CH; W represents the following formula (II): or the following formula (III): Y represents a group of a formula (IV): The compounds have a histamine-H3 receptor antagonistic or inverse-agonistic activity and are useful for remedy and/or prevention of obesity, diabetes, hormone secretion disorders, sleep disorders, etc.Type: GrantFiled: August 13, 2009Date of Patent: October 25, 2011Assignee: MSD K.K.Inventors: Norikazu Ohtake, Akira Naya, Yuji Haga, Makoto Jitsuoka, Takuya Suga, Ryo Yoshimoto, Shigeru Tokita, Akio Kanatani
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Patent number: 7960394Abstract: This invention provides a compound or its pharmaceutically-acceptable salt of formula (I) wherein R1 represents a lower alkyl group et al; R2 and R3 are same and different and represents hydrogen atm et al; R4 represents the substituent of the formula (II) et al; X1 represents NH, O or S; Y represents N or C; Ar is a divalent substituent derived from aryl et al, by removing two hydrogen atoms therefrom; the ring A represents a 5- or 6-membered heteroaryl group; this compounds has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for preventive or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.Type: GrantFiled: May 30, 2005Date of Patent: June 14, 2011Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Takashi Mizutani, Tsuyoshi Nagase, Nagaaki Sato, Akio Kanatani, Shigeru Tokita
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Patent number: 7834182Abstract: Provided are a histamine-H3 receptor antagonist; and a preventive and/or a remedy for metabolic system diseases such as obesity, diabetes, hormone secretion disorder, hyperlipemia, gout, fatty liver, circulatory system diseases, for example, stenocardia, acute/congestive cardiac insufficiency, cardiac infarction, coronary arteriosclerosis, hypertension, nephropathy, sleep disorder and various diseases accompanied by sleep disorder such as idiopathic hypersomnia, repetitive hypersomnia, true hypersomnia, narcolepsy, sleep periodic acromotion disorder, sleep apnea syndrome, circadian rhythm disorder, chronic fatigue syndrome, REM sleep disorder, senile insomnia, night worker sleep insanitation, idiopathic insomnia, repetitive insomnia, true insomnia, electrolyte metabolism disorder; and central and peripheral nervous system diseases such as bulimia, emotional disorder, melancholia, anxiety, epilepsy, delirium, dementia, shinzophrenia, attention deficit/hyperactivity disorder, memory disorder, Alzheimer's diseasType: GrantFiled: March 6, 2009Date of Patent: November 16, 2010Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Ohtake, Ryo Yoshimoto, Shigeru Tokita, Akio Kanatani, Sayaka Mizutani
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Patent number: 7803807Abstract: The present invention relates to compounds of Formula (I) wherein A, B and C are independently methine, said methine being optionally substituted; D is nitrogen; T, U, V and W are independently methine or nitrogen, said methine being optionally substituted and least two of T, U, V and W are said methine groups; X is —N(SO2R4)—, N(COR5)— or —CO—; Y is C(R6)(R7)—, —O— or —N(R8) and a pharmaceutically acceptable salt, ester or N-oxide derivative thereof.Type: GrantFiled: October 26, 2009Date of Patent: September 28, 2010Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Otake, Minoru Moriya, Yoshio Ogino, Kenji Matsuda, Yoshikazu Nagae, Akio Kanatani, Takehiro Fukami
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Patent number: 7790731Abstract: The present invention is directed to a form I crystal of 2-methyl 3-{4-[3-(1-pyrrolidinyl)propoxy]phenyl}-5-trifluoromethyl-4(3H)-quinazolinone that is useful for example in the treatment of sleep disorders or various sleep disorder-associated diseases.Type: GrantFiled: February 13, 2006Date of Patent: September 7, 2010Assignee: Banyu Pharmaceutical Co. Ltd.Inventors: Akio Kanatani, Nagaaki Sato, Tsuyoshi Nagase, Shigeru Tokita
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Publication number: 20100210637Abstract: Provided are compounds of a formula (I) and their pharmaceutically-acceptable salts: wherein X1, X2 and X3 each independently represent N or CH; W represents the following formula (II): or the following formula (III): Y represents a group of a formula (IV): The compounds have a histamine-H3 receptor antagonistic or inverse-agonistic activity and are useful for remedy and/or prevention of obesity, diabetes, hormone secretion disorders, sleep disorders, etc.Type: ApplicationFiled: August 13, 2009Publication date: August 19, 2010Inventors: Norikazu Ohtake, Akira Naya, Yuji Haga, Makoto Jitsuoka, Takuya Suga, Ryo Yoshimoto, Shigeru Tokita, Akio Kanatani
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Publication number: 20100184648Abstract: A therapeutic agent for a non-alcoholic fatty liver disease comprising a melanin-concentrating hormone receptor antagonist as an active ingredient, which is developed based on a novel mechanism of action that a melanin-concentrating hormone receptor is involved in non-alcoholic fatty liver diseases. A method for screening a drug candidate compound for the treatment or prevention of a non-alcoholic fatty liver disease by utilizing the mechanism.Type: ApplicationFiled: March 28, 2006Publication date: July 22, 2010Inventors: Akira Gomori, Akane Ishihara, Hisashi Iwasa, Jun Suzuki, Makoto Ito, Akio Kanatani
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Patent number: 7732456Abstract: The invention provides pyridone derivatives represented by a general formula (I) [in the formula, R1 and R2 may be same or different and stands for H, etc., or R1 and R2 may form an aliphatic nitrogen-containing heterocyclic group together with the N to which they bind; X1-X3 may be same or different and stand for methine or N, provided not all of them simultaneously stand for nitrogen; X4-X7 may be same or different and stand for methine or N, provided that three or more of them do not simultaneously stand for N; Y1 and Y3 may be same or different and stand for single bond, —O—, —NR—, —S—, etc; Y2 stands for lower lkylene, etc.; R stands for H, etc., L stands for methylene; Z1 and Z2 may be same or different and stand for single bond or lower alkylene; or R1, L and Z2 may form an aliphatic nitrogen-containing heterocyclic group with the N to which R1 binds; and Ar stands for aromatic carbocyclic group, etc.].Type: GrantFiled: March 4, 2005Date of Patent: June 8, 2010Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Otake, Yuji Haga, Akira Naya, Sayaka Mizutani, Akio Kanatani
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Publication number: 20100137391Abstract: Disclosed are: novel use of an agonist histamine receptor H3 (e.g., Imetit) for prevention of obesity or the reduction of food intake; a method for evaluation of a compound for use as a therapeutic agent targeted to histamine receptor HR protein; and a compound provided by the method.Type: ApplicationFiled: September 13, 2006Publication date: June 3, 2010Inventors: Ryo Yoshimoto, Akane Ishihara, Akio Kanatani, Shigeru Tokita
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Patent number: 7727998Abstract: The invention provides melanin-concentrating hormone receptor antagonists containing as the active ingredient piperidine derivatives represented by the general formula [I]: [wherein R1 is hydrogen, hydroxyl, lower alkyl, or the like; R2, R3a, R3b, R4a, R4b, R5a, R5b and R6 each stands for hydrogen, halogen, or the like; W1 and W2 each independently stands for —O—, —CH2—, or the like; Y1, Y2, Y3 and Y4 stand for —CH—, —CF—, —N—, or the like; Z stands for lower alkyl, an aliphatic heterocyclic group, or the like; Ar is a mono- or bi-cyclic aliphatic heterocycle or an aromatic heterocycle; and n is an integer of 1 to 8]. The compounds act as antagonist against melanin-concentrating hormone receptor and are useful as drugs for central diseases, circulatory diseases, or metabolic diseases.Type: GrantFiled: February 9, 2004Date of Patent: June 1, 2010Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Minoru Moriya, Toshihiro Sakamoto, Makoto Ishikawa, Akio Kanatani, Takehiro Fukami
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Patent number: 7691860Abstract: The present invention relates to compounds of the general formula (I): wherein A, B, C and D each independently are a methine group or a nitrogen atom, said methine group optionally having a substituent(s) with at least one of them meaning the methine group; E means a group represented by the following formulae (E1): R1 means a lower alkyl group or an aryl group optionally having a substituent(s) or means a lower alkylene group linked to arbitrary, linkable position(s) of E, and others. The compounds of the present invention are useful as an agent for the treatment of a variety of diseases related to NPY.Type: GrantFiled: February 15, 2005Date of Patent: April 6, 2010Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Otake, Yoshio Ogino, Akio Kanatani
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Patent number: 7687514Abstract: The present invention relates to a compound of the formula (I): (wherein A, B, C and D are independently nitrogen or optionally substituted methine; E is nitrogen, methine or hydroxy substituted methine; n is 0 or 1; T, U, V and W are independently nitrogen or optionally substituted methine; X is —N(SO2R4)—, —N(COR5)— or —CO—; Y is —C(R6)(R7)—, —O— or —N(R8)—, provided that the compound (I) when E is nitrogen, n is 0, X is —CO—, and Y is —O— is excluded) and the like, which are useful as an agent for the treatment of various diseases related to NPY.Type: GrantFiled: May 10, 2006Date of Patent: March 30, 2010Assignee: Banyu Pharmaceuticals Co., Ltd.Inventors: Norikazu Otake, Minoru Moriya, Yoshio Ogino, Kenji Matsuda, Yoshikazu Nagae, Akio Kanatani, Takehiro Fukami
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Publication number: 20100048600Abstract: The present invention relates to a compound of the formula (I): (wherein A, B, C and D are independently nitrogen or optionally substituted methine; E is nitrogen, methine or hydroxy substituted methine; n is 0 or 1; T, U, V and W are independently nitrogen or optionally substituted methine; X is —N(SO2R4)—, —N(COR5)— or —CO—; Y is —C(R6)(R7)—, —O— or —N(R8)—, provided that the compound (I) when E is nitrogen, n is 0, X is —CO—, and Y is —O— is excluded) and the like, which are useful as an agent for the treatment of various diseases related to NPY, for example cardiovascular disorders such as angina, acute or congestive heart failure, myocardial infarction, hypertension, nephropathy, electrolyte abnormality, vasospasm, arteriosclerosis, etc., central nervous system disorders such as bulimia, depression, anxiety, seizure, epilepsy, dementia, pain, alcoholism, drug withdrawal, circadian rhythm disorders, schizophrenia, memory impairment, sleep disorders, cognitive impairment, etc.Type: ApplicationFiled: October 26, 2009Publication date: February 25, 2010Inventors: NORIKAZU OTAKE, Minoru Moriya, Yoshio Ogino, Kenji Matsuda, Yoshikazu Nagae, Akio Kanatani, Takehiro Fukami
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Patent number: 7645756Abstract: The invention provides a compound or its pharmaceutically-acceptable salt of formula wherein A1 is a hydrogen, etc.; j and k are 0 or 1; is a double bond, etc.; is a double bond, etc.; one of W1 and W2 is E—O—W, etc., and the other is a hydrogen atom, etc.; E is a divalent group derived from a benzene ring, etc., by removing two hydrogen atoms therefrom; W is a group of formula (II-1): which has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for prevention or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.Type: GrantFiled: February 17, 2005Date of Patent: January 12, 2010Assignee: Banyu Pharmaceutical Co. Ltd.Inventors: Toshiyuki Takahashi, Akio Kanatani, Shigeru Tokita, Ryo Yoshimoto
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Patent number: 7595316Abstract: Compound of the formula: (I) [wherein each of X1, X2 and X3 independently represents N or CH, W represents the formula (II):(II) or the formula (III):(III) and Y represents a group of the formula (IV):(IV)], or a pharmacologically acceptable salt thereof. This compound exhibits histamine receptor H3 antagonist or inverse agonist activity and is useful of the treatment and/or prevention of obesity, diabetes, hormonal secretion abnormality, sleep, disorder, etc.Type: GrantFiled: June 24, 2004Date of Patent: September 29, 2009Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Ohtake, Akira Naya, Yuji Haga, Makoto Jitsuoka, Takuya Suga, Ryo Yoshimoto, Shigeru Tokita, Akio Kanatani
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Patent number: 7589096Abstract: The present invention relates to a compound of the formula (I): wherein Az is a group comprising a monocyclic azole or a bicyclic aromatic ring of the same or different fused azoles; T, U, V and W are independently methine or nitrogen, wherein a methine may be optionally substituted by a substituent, and at least two of T, U, V and W are methine groups; and X is nitrogen or methine. The compounds of the present invention are useful as agents for the treatment of various kinds of diseases related to NPY, for example, cardiovascular disorders, nervous system disorders, genitative diseases, metabolic diseases, genital or reproductive disorders, gastro-intestinal disorders, respiratory disorders, inflammatory diseases or glaucoma, and the like.Type: GrantFiled: February 26, 2008Date of Patent: September 15, 2009Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Norikazu Otake, Yuji Haga, Makoto Jitsuoka, Akio Kanatani
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Publication number: 20090209562Abstract: The present invention provides a compound represented by formula (I) below, or a pharmaceutically acceptable salt thereof, which, having histamine H3 receptor antagonist or inverse agonist activity, is useful in the prophylaxis or therapy of metabolic diseases, circulatory diseases, or nervous system diseases. [where, for example, Ar is a divalent group formed by eliminating two hydrogen atoms from benzene, X1 is a nitrogen atom, sulfur atom or oxygen atom, R1 is a 5- to 6-membered heteroaryl group, Ring A is a 5- to 6-membered heteroaryl ring, R2 and R3 are amino groups or alkylamino groups, and X2 is represented by formula (II): (where R4 and R5 are lower alkyl groups, and n is an integer from 2 to 4).Type: ApplicationFiled: February 11, 2009Publication date: August 20, 2009Applicant: Banyu Pharmaceutical Co., Ltd.Inventors: Tsuyoshi Nagase, Nagaaki Sato, Akio Kanatani, Shigeru Tokita
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Publication number: 20090203710Abstract: Provided are a histamine-H3 receptor antagonist; and a preventive and/or a remedy for metabolic system diseases such as obesity, diabetes, hormone secretion disorder, hyperlipemia, gout, fatty liver, circulatory system diseases, for example, stenocardia, acute/congestive cardiac insufficiency, cardiac infarction, coronary arteriosclerosis, hypertension, nephropathy, sleep disorder and various diseases accompanied by sleep disorder such as idiopathic hypersomnia repetitive hypersomnia, true hypersomnia, narcolepsy, sleep periodic acromotion disorder, sleep apnea syndrome, circadian rhythm disorder, chronic fatigue syndrome, REM sleep disorder, senile insomnia, night worker sleep insanitation, idiopathic insomnia, repetitive insomnia, true insomnia, electrolyte metabolism disorder; and central and peripheral nervous system diseases such as bulimia, emotional disorder, melancholia, anxiety, epilepsy, delirium, dementia, shinzophrenia, attention deficit/hyperactivity disorder, memory disorder, Alzheimer's diseaseType: ApplicationFiled: March 6, 2009Publication date: August 13, 2009Inventors: Norikazu Ohtake, Ryo Yoshimoto, Shigeru Tokita, Akio Kanatani, Sayaka Mizutani
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Patent number: 7566781Abstract: The present invention provides an imidazopyridine compound represented by formula (I), wherein R1 and R2 each independently represent a C1-6 alkyl group et al; R3 and R4 each independently represent a hydrogen atom, a methyl et al; Ar1 is a divalent substituent representing a monocyclic or bicyclic, 3- to 8-membered aromatic or aliphatic heterocyclic group et al; Ar2 represents an aromatic carbocyclic group, or an aromatic heterocyclic group; W represents —(CH2)m et al, and m indicates an integer of from 0 to 10. This compound acts as a melanin concentrating hormone receptor antagonist, and is useful as treating agents for obesity.Type: GrantFiled: May 9, 2005Date of Patent: July 28, 2009Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Shunji Sakuraba, Minoru Moriya, Hidekazu Takahashi, Hiroyuki Kishino, Makoto Jitsuoka, Minoru Kameda, Akio Kanatani