Patent ID: 7612070

Claim:
A compound according to formula (1): Wherein Het represents an optionally substituted heterocyclic group selected from the group consisting of oxetane, furan, dihydrofuran; tetrahydrofuran; pyran; dihydropyran; tetrahydropyran; dioxole; thiophene; dihydrothiophene; tetrahydrothiophene; thiopyran; dihydrothiopyran; tetrahydrothiopyran; pyrrole; dihydropyrrole; pyrrolidine; pyridine; dihydropyridine; tetrahydropyridine; piperidine; pyrazole; 2-pyrazoline; pyrazolidine; imidazole; imidazolidine; pyrimidine; pyrazine; oxazoline; piperazine; 1,2,3-triazole; 1,2,4-triazole; tetrazole; isoxazole; 1,3-oxadiazole; 1,2,3-oxadiazole; 1,2,4-oxadiazole; 1,2,5-oxadiazole; 1,3,4-oxadiazole; 1,2-thiazole; 1,3-thiazole; 1,2,3-thiadiazole; 1,2,4-thiadiazole; 1,2,5-thiadiazole; 1,3,4-thiadiazole; 1,3-dioxolan, oxazolidine, and morpholine; Wherein A 1 and A 2 each represents —N═; A 3 represents —CH 2 —, —(C═O)—, or —SO 2 —; R 1 represents a group selected from the following formulae: Wherein A 4 represents —O—, —S—, or —NH—; R 2 represents a straight or branched alkyl group having 1 to 3 carbon atoms; n is 0, 1, or 2; Or an addition salt thereof with a pharmaceutically acceptable acid or base.