| 摘要 |
PURPOSE: A 2-carbonylthiazole derivative provides a medicament which comprises the 2-carbonylthiazole derivative of formula (I) or a pharmaceutically acceptable salt thereof and a dopamine D4 receptor antagonist which contains the same as the active ingredient, which are useful as drugs for preventing and treating dopamine D4 receptor-related morbid states such as schizophrenia and problematic behavior caused by cerebrovascular accidents and senile dementia, and also as the drugs which do not induce extrapyramidal disorders as side effects. CONSTITUTION: A 2-carbonylthiazole derivative represented by formula (I) is provided, wherein each of Ar1 and Ar2 represents a phenyl group, a phenyl group having one or two substituents selected from "a halogen atom, an alkyl group having 1 to 5 carbon atoms, a trifluoromethyl group, an alkoxy group having 1 to 5 carbon atoms and a hydroxyl group" or a thienyl group; R1 represents an alkoxy group having 1 to 5 carbon atoms, a hydroxyl group or an amino group represented by formula N(R3)R4 (wherein each of R3 and R4 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or R3 and R4, together with the nitrogen atom to which they are bound, form a pyrrolidino, piperidino, morpholino or piperazino group, or a pyrrolidino, piperidino, morpholino or piperazino group having one to four substituents selected from "an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms and a hydroxyl group"); Y1-Y2 represents CH-CO or C=C(R2) (wherein R2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms); and n is an integer of from 1 to 4U or a pharmaceutically acceptable salt thereof.
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