- USE OF T-TYPE CALCIUM CHANNEL BLOCKER FOR TREATING PRURITUS
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A medicament for treating or preventing pruritus is provided. For the medicament for treating or preventing pruritus, a compound having a blocking action on Cav3.2T-type calcium channels represented by General Formulas (I) to (VI), a tautomer of the compo
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- T-TYPE CALCIUM CHANNEL BLOCKER
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To provide a novel T-type calcium channel blocker. A compound represented by the following General Formula (I), a tautomer or a stereoisomer of the compound, a pharmaceutically acceptable salt of the compound, or a solvate of the compound, the tautomer, the stereoisomer, or the salt is used as a T-type calcium channel blocker. wherein A represents a phenyl which may have a substituent, a 4-membered to 6-membered heteroaryl ring composed of one to three identical or different heteroatoms selected from an oxygen atom, a sulfur atom, and a nitrogen atom and carbon atoms as ring-constituting atoms, or a heterocondensed ring composed of the heteroaryl ring and either a benzene ring or a 6-membered heteroaryl ring composed of one to two nitrogen atoms and carbon atoms, wherein the heteroaryl ring or the heterocondensed ring may have a substituent and is bonded to a nitrogen atom of the adjacent cyclic amino by means of a carbon atom constituting these rings; B represents a phenyl which may have a substituent, a 5-membered or 6-membered heteroaryl ring composed of one to three identical or different heteroatoms selected from an oxygen atom, a sulfur atom, and a nitrogen atom and carbon atoms as ring-constituting atoms, or a heterocondensed ring composed of the heteroaryl ring and either a benzene ring or a 6-membered heteroaryl ring composed of one to two nitrogen atoms and carbon atoms, wherein the heteroaryl ring or the heterocondensed ring may have a substituent and is bonded to the adjacent cyclopropyl ring by means of a carbon atom constituting these rings; R1 and R2, which may be identical or different, each represent a hydrogen atom, a halogen atom, or the like; R3 represents a hydrogen atom, a halogen atom, or the like; n and m, which may be identical or different, each represent 0 or 1; and p represents 1 or 2.
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