Patent ID: 7544716

Claim:
A tetrahydro-naphthalene derivative of the formula (I), its tautomeric or stercoisomeric form, or a salt thereof: wherein n represents an integer of 0 to 6; R 1 represents hydrogen or C 1-6 alkyl; R 2 and R 3 together with the nitrogen atom to which they are attached, form a 5-7 membered saturated heterocyclic ring optionally interrupted by one or two atoms selected from the group consisting of oxygen and nitrogen, wherein said saturated heterocyclic ring has one or more substituents selected from the group consisting of halogen, benzyl, hydroxy, carboxy, amino, oxo, aminocarbonyl, C 1-6 alkoxycarbonyl, and C 1-6 alkyl optionally substituted by hydroxy, carboxy, C 1-6 alkoxy, or C 1-6 alkoxycarbonyl, or R 2 represents C 2-6 alkenyl, C 2-6 alkynyl, or C 1-6 alkyl substituted by amino, hydroxy, C 1-6 alkylamino, or di(C 1-6 alkyl)amino; R 3 represents hydrogen, C 2-6 alkenyl, C 2-6 alkynyl, or C 1-6 alkyl optionally substituted by amino, hydroxy, C 1-6 alkylamino, or di(C 1-6 alkyl)amino; and R 4 represents hydrogen, halogen, C 1-6 alkylthio, C 1-6 alkyl optionally substituted by mono-, di-, or tri-halogen, or C 1-6 alkoxy optionally substituted by mono-, di-, or tri-halogen.