Abstract: A compound represented by Formula [I]: or pharmaceutically acceptable salt thereof, wherein each symbol is as defined in the description.

Abstract: A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the specification. A compound having a calcium-sensing receptor antagonistic action, a pharmaceutical composition comprising the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis are provided.

Abstract: The present invention provides the production method of carboxylic acid compound, as shown in Scheme I.

Abstract: A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the specification. A compound having a calcium-sensing receptor antagonistic action, a pharmaceutical composition comprising the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis are provided.

Abstract: A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the specification. A compound having a calcium-sensing receptor antagonistic action, a pharmaceutical composition comprising the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis are provided.

Abstract: [Problems] The present invention provides a superior production method and a superior purification method of compounds effective for the treatment or prophylaxis of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like. [Means] A compound represented by the following formula [2] or a pharmaceutically acceptable salt thereof can be produced by reacting a compound represented by the following formula [3] or a salt thereof with a compound represented by the following formula [4], a salt thereof or a reactive derivative thereof. Moreover, crystallization of a compound represented by the formula [2] can be performed with industrially superior workability, and high quality crystals of a compound represented by the formula [2] can be obtained. wherein each symbol is as defined in the description.

Abstract: A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the specification. A compound having a calcium-sensing receptor antagonistic action, a pharmaceutical composition comprising the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis are provided.

Abstract: The present invention provides a compound having a calcium-sensitive receptor antagonistic action, a pharmaceutical composition containing the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis. A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the description.

Abstract: Provision of a superior URAT1 activity inhibitor effective for the treatment and the like of a pathology involving uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urinary lithiasis, renal dysfunction, coronary heart disease, ischemic cardiac diseases and the like. A URAT1 activity inhibitor containing a compound represented by the following formula [1] or a pharmaceutically acceptable salt thereof, or a solvate thereof as an active ingredient: wherein each symbol is as defined in the specification.

Abstract: A compound of the formula [I] wherein R1 is optionally substituted aryl group or optionally substituted heteroaryl group; R2 is optionally substituted C1-6 alkyl group, C3-7 cycloalkyl group and the like; R3 is hydrogen atom, C1-6 alkyl group, hydroxyl group and the like; R4 is hydrogen atom, C1-6 alkyl group and the like; R5 and R6 are each C1-6 alkyl group and the like; R7 is optionally substituted aryl group or optionally substituted heteroaryl group; X1, X2 and X3 are each C1-6 alkylene group and the like; and X4 and X5 are each a single bond, methylene group and the like, a salt thereof, a solvate thereof or a prodrug thereof, and a pharmaceutical composition containing the compound, particularly a calcium receptor antagonist and a therapeutic agent for osteoporosis, are provided.

Abstract: A URAT1 activity inhibitor containing a nitrogen-containing fused ring compound represented by the following formula [1]: wherein each symbol is as defined in the description. The present invention is useful for the prophylaxis or treatment of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like.

Abstract: The present invention provides a compound having a calcium-sensitive receptor antagonistic action, a pharmaceutical composition containing the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis. A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the description.

Abstract: A compound of the formula [I] wherein R1 is optionally substituted aryl group or optionally substituted heteroaryl group; R2 is optionally substituted C1-6 alkyl group, C3-7 cycloalkyl group and the like; R3 is hydrogen atom, C1-6 alkyl group, hydroxyl group and the like; R4 is hydrogen atom, C1-6 alkyl group and the like; R5 and R6 are each C1-6 alkyl group and the like; R7 is optionally substituted aryl group or optionally substituted heteroaryl group; X1, X2 and X3 are each C1-6 alkylene group and the like; and X4 and X5 are each a single bond, methylene group and the like, a salt thereof, a solvate thereof or a prodrug thereof, and a pharmaceutical composition containing the compound, particularly a calcium receptor antagonist and a therapeutic agent for osteoporosis, are provided.

Abstract: A compound of the formula [I] wherein R1 is optionally substituted aryl group or optionally substituted heteroaryl group; R2 is optionally substituted C1-6 alkyl group, C3-7 cycloalkyl group and the like; R3 is hydrogen atom, C1-6 alkyl group, hydroxyl group and the like; R4 is hydrogen atom, C1-6 alkyl group and the like; R5 and R6 are each C1-6 alkyl group and the like; R7 is optionally substituted aryl group or optionally substituted heteroaryl group; X1, X2 and X3 are each C1-6 alkylene group and the like; and X4 and X5 are each a single bond, methylene group and the like, a salt thereof, a solvate thereof or a prodrug thereof, and a pharmaceutical composition containing the compound, particularly a calcium receptor antagonist and a therapeutic agent for osteoporosis, are provided.

Abstract: A compound represented by the following formula (1), a pharmaceutically acceptable salt thereof or an optically active form thereof: wherein each symbol is as defined in the specification. A compound having a calcium-sensing receptor antagonistic action, a pharmaceutical composition comprising the compound, particularly a calcium receptor antagonist and a therapeutic drug for osteoporosis are provided.

Abstract: A compound of the formula [I] 1