Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: The present invention relates to a compound represented by the formula (I), which is useful as an agent for the prophylaxis or treatment of epilepsy, neurodegenerative disease and the like. In the formula (I), each symbol is as defined in the specification.

Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: The problem of the present invention is to provide a compound having a PDE2A inhibitory action, and useful as a prophylactic or therapeutic drug for schizophrenia, Alzheimer's disease and the like. The present invention relates to a compound represented by the formula (I): wherein each symbol is as described in the DESCRIPTION, or a salt thereof.

Abstract: A compound represented by the formula (I): wherein each symbol is as described in the SPECIFICATION, or a salt thereof has a PDE2A inhibitory action, and is useful as a prophylactic or therapeutic drug for schizophrenia, Alzheimer's disease and the like.

Abstract: The present invention provides a compound or a salt thereof useful for an agent for the prophylaxis or treatment of neurodegenerative disease and the like. The present invention relates to a compound represented by the formula wherein each symbol is as defined in the present specification, or a salt thereof.

Abstract: The present invention relates to a compound represented by the formula (I), which is useful as an agent for the prophylaxis or treatment of epilepsy, neurodegenerative disease and the like. In the formula (I), each symbol is as defined in the specification.

Abstract: The present invention provides a compound or a salt thereof useful for an agent for the prophylaxis or treatment of neurodegenerative disease and the like. The present invention relates to a compound represented by the formula wherein each symbol is as defined in the present specification, or a salt thereof.

Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: The present invention provides a compound having a PDE2A selective inhibitory action, which is useful as an agent for the prophylaxis or treatment of schizophrenia, Alzheimer's disease and the like. The present invention is a compound represented by the formula (1): wherein each symbol is as described in the specification, or a salt thereof.

Abstract: Provision of a compound having a serotonin 5-HT2C receptor activating action. A compound represented by the formula (I): wherein each symbol is as described in the description, or a salt thereof.

Abstract: Provision of a compound having a serotonin 5-HT2C receptor activating action. A compound represented by the formula (I): wherein each symbol is as described in the description, or a salt thereof.

Abstract: Provided is a compound having a serotonin 5-HT2C receptor activating action, useful for lower urinary tract conditions, obesity and cancer. A compound represented by the formula (I0): wherein each symbol is as defined in the specification, or a salt thereof.

Abstract: Provided is a compound having a serotonin 5-HT2C receptor activating action. A compound represented by the formula (I0): wherein each symbol is as defined in the specification, or a salt thereof.

Abstract: The present invention provides a tricyclic heterocyclic compound having a serotonin 5-HT2C receptor activation action and the like. A 5-HT2C receptor activator containing a compound represented by the formula (I): wherein each symbol is as defined in the specification, or a salt thereof or a prodrug thereof.

Abstract: A compound represented by the formula (I): wherein Ar is an optionally substituted aromatic ring; Xa, Xc, Ya, Yc, Z1 and Z2 are each a bond, O, S, —CO—, —CS—, —CR3(OR4)—, —NR5—, —SO—, —SO2—, —CONR6— or —NR6CO— (wherein R3, R4, R5 and R6 are as defined in the specification); Xb and Yb are each a bond or a divalent hydrocarbon group having 1 to 20 carbon atoms; R1 is an optionally substituted hydrocarbon group; ring A is an optionally further substituted aromatic ring, provided that the ring should not be benzimidazole; n is an integer of 1 to 8; ring B is an optionally further substituted aromatic ring, provided that the ring should not be oxazole; W is a divalent saturated hydrocarbon group having 1 to 20 carbon atoms; and R2 is —OR8 or —NR9R10 (wherein R8, R9 and R10 are as defined in the specification) or a salt thereof, is useful as an agent for the prophylaxis or treatment of diabetes and the like.

Abstract: A method of fabricating a magnetic head device comprising a slider having a magnetic head element, a suspension structure made of a thin resilient material and having one end supporting the slider and the other end to be attached to another member, and a head IC chip. The head IC chip is mounted on the suspension structure so as to face a magnetic recording disc and at a position spaced from the slider-supporting one end of the suspension structure by an intervening portion of the suspension structure. The position is selected so that the intervening portion is effective to suppress a temperature increase in the head IC chip due to at least thermal conduction through the intervening portion.

Abstract: There is disclosed a magnetic disc device wherein temperature increase in the head IC chip can effectively suppressed. The magnetic head device comprises a slider having a magnetic head, a suspension structure having one end supporting the slider, and a head IC chip, the head IC chip being mounted on the suspension structure at a side adapted to be faced to a magnetic recording disc. A flow of air produced by the rotation of the magnetic disc cols the head IC chip in operation.