Patent ID: 8198282

Claim:
A method for treating a human cytomegalovirus infection in a human or animal comprising the step of administering an antivirally effective amount of a compound of the formula (I) in which Ar is aryl, in which aryl may be substituted by 1 to 3 substituents, where the substituents are selected independently of one another from the group consisting of alkyl, alkoxy, formyl, hydroxycarbonyl, alkylcarbonyl, alkoxycarbonyl, trifluoromethyl, halogen, cyano, hydroxy, amino, alkylamino, aminocarbonyl, and nitro, in which alkyl may be substituted by 1 to 3 substituents, where the substituents are selected independently of one another from the group consisting of halogen, amino, alkylamino, hydroxy, and aryl, or two of the substituents on the aryl form, together with the carbon atoms to which they are bonded, a 1,3-dioxolane, a cyclopentane ring, or a cyclohexane ring, and the optionally present third substituent is selected independently thereof from the group consisting of alkyl, alkoxy, formyl, hydroxycarbonyl, alkylcarbonyl, alkoxycarbonyl, trifluoromethyl, halogen, cyano, hydroxy, amino, alkylamino, aminocarbonyl, and nitro; Q 1 , Q 2 , Q 3 , and Q 4 are CH or N, where exactly one of Q 1 , Q 2 , Q 3 and Q 4 are N and the others are simultaneously CH; R 1 is hydrogen, amino, alkyl, alkoxy, alkylamino, alkylthio, cyano, halogen, nitro, or trifluoromethyl, R 2 is hydrogen, alkyl, alkoxy, alkylthio, cyano, halogen, nitro, or trifluoromethyl, R 3 is amino, alkyl, alkoxy, alkylamino, alkylthio, cyano, halogen, nitro, trifluoromethyl, alkylsulphonyl, or alkylaminosulphonyl, or one of R 1 , R 2 , and R 3 is hydrogen, alkyl, alkoxy, cyano, halogen, nitro, or trifluoromethyl, and the other two form, together with the carbon atoms to which they are bonded, a 1,3-dioxolane, a cyclopentane ring, or a cyclohexane ring; R 4 is hydrogen or alkyl, R 5 is hydrogen or alkyl, or R 4 and R 5 in the piperazine ring are bonded to exactly opposite carbon atoms and form a methylene bridge optionally substituted by 1 to 2 methyl groups; R 6 is hydrogen, alkyl, alkoxy, alkylthio, formyl, hydroxycarbonyl, aminocarbonyl, alkylcarbonyl, alkoxycarbonyl, trifluoromethyl, halogen, cyano, hydroxy, or nitro; and R 7 is hydrogen, alkyl, alkoxy, alkylthio, formyl, hydroxycarbonyl, alkylcarbonyl, alkoxycarbonyl, trifluoromethyl, halogen, cyano, hydroxy, or nitro; or a salt thereof.