Patent ID: 7220746

Claim:
A compound of formula I in which R1 and R2 are both hydrogen or together form an additional bond, R3 represents a phenyl derivative of formulae (a) or (b) wherein R4 is 1–4C-alkoxy or 1–4C-alkoxy which is completely or predominantly substituted by fluorine, R5 is 1–4C-alkoxy, 3–7C-cycloalkoxy, 3–7C-cycloalkylmethoxy, or 1–4C-alkoxy which is completely or predominantly substituted by fluorine, R6 is 1–4C-alkoxy or 1–4C-alkoxy which is completely or predominantly substituted by fluorine, R7 is 1–4C-alkyl and R8 is hydrogen or 1–4C-alkyl, or wherein R7 and R8 together, and with inclusion of the two carbon atoms to which they are bonded, form a spiro-linked 5-, 6- or 7-membered hydrocarbon ring, optionally interrupted by an oxygen or sulfur atom, R9 is —C(O)—(CH 2 ) n -R10, wherein R10 is pyrrolidine-2,5-dione-1-yl, n is an integer from 1 to 4, or a salt thereof.