1,4-Dihydropyridine derivatives of the formula (I) having vasodilative activity and inhibitory activity on platelet aggregation:
wherein Ar¹ represents an aromatic hydrocarbon group or heterocyclic group which may have at least one substituent; R¹ represents a hydrocarbon group which may have at least one substituent; A and B each represent a hydrocarbon group which may have at least one substituent, in which any of the carbon atoms in the main chain thereof may be replaced by a nitrogen atom or an oxygen atom; Ar² represents an aromatic hydrocarbon group or heterocyclic group; Ar³ represents a heterocyclic group which may have at least one substituent; and n is 0 or 1.