Patent ID: 7098228

Claim:
A compound of formula (I) wherein R 1 is unsubstituted naphthyl, unsubstituted phenyl, phenyl substituted with one or more substituents each independently selected from halogen, trifluoromethyl, amino, alkyl, alkoxy, alkylcarbonyl, cyano, carbamoyl, alkoxycarbamoyl, methylendioxy, carboxy, alkoxycarbonyl, aminocarbonyl, alkyaminocarbonyl, dialkylaminocarbonyl, hydroxy, alkyl substituted with one to three halogen atoms, and nitro, unsubstituted heteroaryl which contains one or two hetero atoms selected from nitrogen, oxygen and sulfur, or substituted heteroaryl which is heteroaryl which contains one or two hetero atoms selected from nitrogen, oxygen and sulfur and which is substituted on at least one carbon atom with a group independently selected from halogen, alkyl, alkoxy, cyano, haloalkyl and trifluoromethyl; R 2 is hydrogen, alkyl or cycloalkyl; R 3 is alkoxy or alkoxy substituted with one to three halogen atoms; R 4 is hydrogen, alkyl or cycloalkyl; A is oxygen or sulfur; n is 1, 2 or 3; wherein the bond between the carbon atoms C a and C b is a carbon carbon single or double bond; and pharmaceutically acceptable salts and esters thereof.