Abstract: Provided is a compound having a superior PKC inhibitory action, and useful as a prophylactic or therapeutic agent for immune diseases, inflammatory diseases and the like, or a salt thereof. A compound represented by the formula (I): wherein each symbol is as described in the DESCRIPTION, or a salt thereof has a superior PKC inhibitory action, and is useful as a prophylactic or therapeutic agent for immune diseases, inflammatory diseases and the like.

Abstract: The present invention aims to provide a prophylactic or therapeutic agent for schizophrenia and the like, containing the compound of the present invention having a GPR52 agonist activity. A compound represented by the following formula (I) or a salt thereof: wherein, A is —CONH or the like, B is a hydrogen atom or a substituent, ring Cy1 is a benzene ring or the like, X1, X2 and X3 are each independently —CH? or —N? or the like, ring Cy2 is a carbon ring or the like, Z is a carbon atom or a nitrogen atom, L is a bond or the like, n is 1 or 2, Rb is a hydrogen atom or a substituent, and ring Cy3 is a benzene ring or the like.

Abstract: For the purpose of providing a GSK-3? inhibitor containing a 2-aminopyridine compound or a salt thereof or a prodrug thereof useful as an agent for the prophylaxis or treatment of a GSK-3?-related pathology or disease, the present invention provides a GSK-3? inhibitor containing a compound represented by the formula (IA): wherein each symbol is as defined in the specification. or a salt thereof or a prodrug thereof.

Abstract: An object of the present invention is to provide an agent for preventing or treating schizophrenia or the like, wherein the compound of the present invention has GPRS2 agonist activity.

Abstract: A compound having GPR52 agonist activity or a salt thereof is provided. The compound can be provided as a preventive/therapeutic agent for schizophrenia or the like. The compound is represented by the following formula: wherein A represents —CONRa— or —NRaCO—, Ra represents a hydrogen atom or the like, B represents a hydrogen atom or the like, a ring Cy1 represents a six-membered aromatic ring which may have one or more substituents in addition to a group represented by -A-B, a ring Cy2 represents a six-membered ring which may be substituted with a halogen atom or the like, a ring Cy3 represents a five- or six-membered ring which may have one or more substituents; X represents C1-2 alkylene or the like, m represents an integer of 0 to 2, and a ring Cy4 represents a six-membered aromatic ring which may have one or more substituents.

Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates a group represented by the formula: wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, R3 indicates a C6-14 aryl group, or salts thereof. The compounds have an excellent action to inhibit neurodegeneration as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as drugs for nerve degenerative diseases.

Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates (i) a group represented by the formula: wherein ring B indicates a 5- to 7-membered ring, or (ii) a group represented by the formula: wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, provided that, when W is Wa, R3 is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R3 indicates a C6-14 aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or therapeutic drugs for nerve degenerative diseases and the

Abstract: A compound of the formula: wherein R1 and R2 each is H or a hydrocarbon group which may be substituted, or R1 and R2 form a 3- to 8-membered carbo or heterocyclic ring which may be substituted; R3 is H, a lower alkyl which may be substituted or an aromatic group which may be substituted; R4 is (1) an aromatic group which may be substituted, (2) an aliphatic hydrocarbon group substituted by an aromatic group which may be substituted, which hydrocarbon group may be further substituted or (3) an acyl; X and Y each is oxygen or sulfur which may be oxidized; and ring A is a benzene ring which may be further substituted, or a salt thereof, is useful for an agent for suppressing neurodegeneration.

Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates (i) a group represented by the formula: wherein ring B indicates a 5- to 7-membered ring, or (ii) a group represented by the formula: wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, provided that, when W is Wa, R3 is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R3 indicates a C6-14 aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or therapeutic drugs for nerve degenerative diseases and the li

Abstract: Compounds represented by the formula: wherein R1 and R2 are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R1 and R2 may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring, W indicates (i) a group represented by the formula:  wherein ring B indicates a 5- to 7-membered ring, or (ii) a group represented by the formula:  wherein R4 indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R5 is hydrogen atom, a C1-6 alkyl, or an acyl group, provided that, when W is Wa, R3 is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R3 indicates a C6-14 aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or thera

Abstract: Compounds represented by the formula: 1

Abstract: A compound of the formula wherein R1 is H or a substituent; m is 1-3; Ar is an aromatic group which may be substituted; X is a bond or a divalent straight-chain group having 1-6 atoms which may be substituted; Y is —S—, —O—, or —N(R2)— (R2 is H or a substituent group), Z is —N═ or —C(R3)═ (R3 is H or a hydrocarbon group), ring A is a benzene ring; ring B is a 5- to 7-membered ring which may be substituted, or a salt thereof is useful for eliciting a prostaglandin I2 receptor agonistic effect.

Abstract: A compound of the formula: 1

Abstract: A compound of the formula: wherein R1 is H or a substituent; m is 1-3; Ar is an aromatic group which may be substituted; X is a bond or a divalent straight-chain group having 1-6 atoms which may be substituted; Y is —S—, —O—, or —N(R2— (R2 is H or a substituent group), Z is —N═ or —C(R3)═ (R3 is H or a hydrocarbon group), ring A is a benzene ring; ring B is a 5- to 7-membered ring which may be substituted, or a salt thereof is useful for eliciting a prostaglandin I2 receptor agonistic effect.