Compound of the formula I ** Formula ** and / or all stereoisomeric or tautomeric forms of the compound of the formula I and / or mixtures of these forms in any proportion, and / or a salt of the compound of the formula I compatible from the physiological point of view, with Q1, Q2 and Q3 being the same or different, and representing, independently of each other, hydrogen atom or - (C1-C6) -alkyl, the hydrogen atoms in alkyl being able to be completely or partially substituted by fluorine, R1, R2 and R3 being the same or different, and independently representing each other, hydrogen atom, - (C1-C6) -alkyl, - (C3-C6) -cycloalkyl, -O- (C1-C8) -alkyl, -O- (C3-C6) -cycloalkyl, - (C0-C4) -alkylene-C (O) -N (R11) -R12, - (C0- C4) -alkylene-C (O) -O-R11, - (C0-C4) -alkylene-C (O) -R11, - (C0-C4) -alkylene-N (R11) -R12, - (C0-C4) -alkylene-N (R11) -C (O) - R12, halogen, OH, -CN, - (C1-C6) -alkylene-O- (C1-C6) -alkyl, -O- (C1-C6) -alkylene-O- (C1-C6) -alkyl -O- (C1-C4) - alkylene- (C3-C6) -cycloalkyl, no alkyl, alkylene and cycloalkyl being substituted respectively, or being substituted once, twice or three times, independently of each other, by - (C1-C4) -alkyl, OH or -O- (C1-C6) -alkyl, or the hydrogen atoms in alkyl, alkylene or cycloalkyl completely or partially substituted by fluorine, with the proviso that at least one R1, R2 or R3 is not hydrogen atom, representing R11 and R12, independently of each other, hydrogen atom, - ( C1-C6) -alkyl or - (C3-C6) -cycloalkyl, R4, R5, R6, R7 and R8 being the same or different and independently representing hydrogen atom, - (C1-C6) -alkyl, - (C3-C6) -cycloalkyl, OH, -CN, -O- (C1-C8) -alkyl, -O- (C3-C6) -cycloalkyl, - (C0-C4) -alkylene- (CO) - N ( R21) -R22, - (C0-C4) -alkylene-C (O) -O-R21, halogen, -SF5, - (C0-C4) -alkylene-C (O) -R21, - (C0-C4) -alkylene-N (R21) - R22, - (C0-C4) -alkylene-N (R21) -C (O) -R22, - (C1-C6) -alkylene-O- (C1-C6) -alkyl, - (C0-C6) -alkylene-O- (C1-C6) -alkylene-O- (C1-C6) -alq uyl, or - (C0-C6) -alkylen
