Abstract: Provided is a compound which is useful as a prophylactic or therapeutic agent for various diseases in which T-type calcium channels are involved, such as hypertension, arrhythmia, pain and cancers, the compound having antagonistic activity against T-type calcium channels, being highly stable in the body and having low risk of, for example, genotoxicity. Disclosed is a compound represented by the following general formula (I), a pharmaceutically acceptable salt thereof, or a solvate thereof: wherein R1 represents —NH(C?O)—V—R3 or —(C?O)NH—V—R3; V represents a single bond, methylene, or —C(CH3)2O—; R2 represents a optionally substituted C1-6 alkyl group; X represents a hydrogen atom, an oxygen atom, a hydroxyl group, a methyl group, or a methylene group; A represents —NR6—, —O—CH2—, or —S—CH2—; n represents the number of methylene chains and represents an integer of 0, 1 or 2; and a doublet containing a dotted line represents a single bond or a double bond.

Abstract: Provided is a compound which is useful as a prophylactic or therapeutic agent for various diseases in which T-type calcium channels are involved, such as hypertension, arrhythmia, pain and cancers, the compound having antagonistic activity against T-type calcium channels, being highly stable in the body and having low risk of, for example, genotoxicity. Disclosed is a compound represented by the following general formula (I), a pharmaceutically acceptable salt thereof, or a solvate thereof: wherein R1 represents —NH(C?O)—V—R3 or —(C?O)NH—V—R3; V represents a single bond, methylene, or —C(CH3)2O—; R2 represents a optionally substituted C1-6 alkyl group; X represents a hydrogen atom, an oxygen atom, a hydroxyl group, a methyl group, or a methylene group; A represents —NR6—, —O—CH2—, or —S—CH2—; n represents the number of methylene chains and represents an integer of 0, 1 or 2; and a doublet containing a dotted line represents a single bond or a double bond.

Abstract: Provided is a novel compound which shows an antagonistic effect against T-type calcium channels, and is useful as a pharmaceutical product. A compound represented by general formula (I), and a pharmaceutical agent containing the same, are disclosed: wherein n represents the number of nitrogen atoms contained in the 6-membered fused aromatic ring, and is 0, 1 or 2; p represents the number of nitrogen atoms contained in the 6-membered aromatic ring, and is 0 or 1; X represents an oxygen atom, —SO2— or —N(R9)—; and R1 to R5 each represents a hydrogen atom or other substituents.

Abstract: Provided is a novel compound which shows an antagonistic effect against T-type calcium channels, and is useful as a pharmaceutical product. A compound represented by general formula (I), and a pharmaceutical agent containing the same, are disclosed: wherein n represents the number of nitrogen atoms contained in the 6-membered fused aromatic ring, and is 0, 1 or 2; p represents the number of nitrogen atoms contained in the 6-membered aromatic ring, and is 0 or 1; X represents an oxygen atom, —SO2— or —N(R9)—; and R1 to R5 each represents a hydrogen atom or other substituents.