Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound having an AMPA receptor function enhancing action, and useful as a prophylactic or therapeutic drug for depression, Alzheimer's disease, schizophrenia, attention deficit hyperactivity disorder (ADHD) and the like. A compound represented by the formula (I): wherein each symbol is as defined in the present specification, or a salt thereof.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound having an AMPA receptor function enhancing action, and useful as a prophylactic or therapeutic drug for depression, Alzheimer's disease, schizophrenia, attention deficit hyperactivity disorder (ADHD) and the like. A compound represented by the formula (I): wherein each symbol is as defined in the present specification, or a salt thereof.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: Provided is a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof, which has an AMPA (?-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor potentiating action. The compound of the present invention is useful as a prophylactic or therapeutic drug for depression, schizophrenia, Alzheimer's disease or attention deficit hyperactivity disorder (ADHD) and the like.

Abstract: There is provided a CRF receptor antagonist comprising a compound of the formula (I): A-W—Ar??(I) wherein, A is a group represented by the formula (A1) or (A2): (wherein, ring Aa is a 5- or 6-membered ring which may be further substituted; ring Ab is a 5- or 6-membered ring which may be further substituted; ring Ac is a 5- or 6-membered ring which may be substituted; R1 is optionally substituted alkyl, substituted amino, substituted hydroxy, etc.; X is carbonyl, —O—, —S—, etc.; Y1, Y2 and Q are independently optionally substituted carbon or nitrogen; ?is a single or double bond); W is a bond, optionally substituted methylene, optionally substituted imino, —O—, —S—, etc.; Ar is optionally substituted aryl or optionally substituted heteroaryl; or a salt thereof or a prodrug thereof.