Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: The present invention provides a prophylactic or therapeutic agent for dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases. A phenylpyrazole derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: {wherein R1 and R2, which may be the same or different, each represent C1-C6 alkyl or C3-C8 cycloalkyl, or R1 and R2 are attached to each other together with their adjacent nitrogen atom to form a 4- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with halogen or C1-C6 alkyl), n represents an integer of 0 to 2, T represents a hydrogen atom, halogen or C1-C6 alkyl, and R represents formula (I): or the like}.

Abstract: A novel pyrazole derivative of the following formula having a histamine H3 receptor antagonistic effect: or a pharmaceutically acceptable salt thereof or a pharmaceutical preparation comprising the same as an active ingredient is effective for prevention or treatment of dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases.

Abstract: An imine compound represented by the formula: wherein A represents a heterocyclic group; R1, R2, an R3 each represent a hydrogen atom, a halogen atom, a C1-10 alkyl group optionally substituted with an aryl group(s) substituted with a halogen atom(s), a C3-10 cycloalkyl group, a C1-6 haloalkyl group, a C1-10 alkoxy group, etc.; R4 represents an optionally substituted C1-10 alkyl, C2-6 alkenyl, or aryl group; R5 represents a hydrogen atom, a C1-10 alkoxy group, a C1-6 haloalkyl group, an optionally substituted C1-10 alkyl or C2-6 alkenyl group, an optionally substituted aryl or heterocyclic group, etc.; W represents —CO—, —CO—CO—, —CO—NH—, —CS—NH—, or —SO2—, or a cannabinoid-receptor agonist comprising said imine compound as an active ingredient. The imine compound of the present invention has a cannabinoid-receptor agonist effect, and is useful as a therapeutic or prophylactic drug for pains and autoimmune diseases.