Patent ID: 7122555

Claim:
A compound of formula (I) wherein R 1 is —C(O)—N(R 5 )R 6 or —N(R 5 )R 6 ; R 2 , R 3 and R 4 are each independently hydrogen, halogen, hydroxy, lower alkyl, lower alkoxy, lower alkenyl, substituted lower alkyl, substituted lower alkoxy, or substituted lower alkenyl, wherein substituted lower alkyl, substituted lower alkoxy and substituted lower alkenyl are lower alkyl, lower alkoxy and lower alkenyl, respectively, which are independently substituted by a group selected from the group consisting of lower alkoxycarbonyl, aryl and heterocyclyl; R 5 is hydrogen, lower alkyl, halogenated lower alkyl or cycloalkyl; R 6 is lower alkylsulfonyl, halogenated lower alkylsulfonyl, cycloalkylsulfonyl, lower alkylcarbonyl, halogenated lower alkylcarbonyl, or cycloalkylcarbonyl; or R 5 and R 6 together with the nitrogen atom to which they are attached form a 4-, 5-, 6- or 7-membered saturated or unsaturated non-aromatic heterocyclic ring optionally containing a further heteroatom selected from nitrogen, oxygen and sulfur, said heterocyclic ring being optionally mono-, di-, or tri-substituted, independently, with a group selected from the group consisting of lower alkyl, halogenated lower alkyl, oxo, dioxo and cyano; or a pharmaceutically acceptable salt thereof.