Patent ID: 8304436

Claim:
A compound of formula 1 wherein R1 represents a phenyl derivative of formulae (a) or (b) wherein R2 is selected from the group consisting of 1-2C-alkoxy and 1-2C-alkoxy which is completely or predominantly substituted by fluorine; R3 is selected from the group consisting of 1-2C-alkoxy, 3-5C-cycloalkoxy, 3-5C-cycloalkylmethoxy and 1-2C-alkoxy which is completely or predominantly substituted by fluorine; R4 is selected from the group consisting of 1-2C-alkoxy and 1-2C-alkoxy which is completely or predominantly substituted by fluorine; R5 is 1-2C-alkyl; R6 is selected from the group consisting of hydrogen and 1-2C-alkyl; or R5 and R6 together and with inclusion of the two carbon atoms, to which they are bonded, form a spiro-linked 5- or 6-membered hydrocarbon ring; R7 is 1-3C-alkyl; R8 is 1-3C-alkyl; or R7 and R8 together with the carbon atom, to which they are bonded, form a spiro-linked 3-, 4-, 5- or 6-membered hydrocarbon ring; R9 is —N(R11)R12, wherein R11 and R12 together and with inclusion of the nitrogen atom to which they are bonded, form a heterocyclic ring selected from the group consisting of a pyrrolidin-2,5-dione-1-yl-, isoindol-1,3-dione-2-yl-, 2-oxo-2,3-dihydro-1H-indol-1-yl-, pyrrolidin-2-one-1-yl-, piperidin-2,6-dione-1-yl-, morpholin-3,5-dione-4-yl-, thiomorpholin-3,5-dione-4-yl-, thiomorpholine-1-oxide-3,5-dione-4-yl- and a thiomorpholine-1,1-dioxide-3,5-dione-4-yl-ring; and n is 1 or 2; or a stereoisomer thereof.