Novel 6-phenylphenantridines

Compounds of the formula I,

• in which
• R1 is hydroxyl, 1-4C-alkoxy, 3-7C-cycloalkoxy, 3-7C-cycloalkylmethoxy or completely or predominantly fluorine-substituted 1-4C-alkoxy,
• R2 is hydroxyl, 1-4C-alkoxy, 3-7C-cycloalkoxy, 3-7C-cycloalkylmethoxy or completely or predominantly fluorine-substituted 1-4C-alkoxy,
• or in which R1 and R2 together are a 1-2C-alkylenedioxy group,
• R3 is hydrogen or 1-4C-alkyl,
• R31 is hydrogen or 1-4C-alkyl,
• or in which R3 and R31 together are a 1-4C alkylene group,
• R4 is hydrogen or 1-4C-alkyl,
• R5 is hydrogen,
• R51 is hydrogen,
• or in which R5 and R51 together represent an additional bond,
• R6 is hydrogen, halogen, nitro, 1-4C-alkyl, trifluoromethyl or 1-4-C-alkoxy,
• R7 is 1-4C-alkyl, 3-7C-cycloalkyl, 3-7C-cycloalkylmethyl, pyridinyl, phenyl or R71- and/or R72-substituted phenyl, wherein
• R71 is halogen, hydroxyl, cyano, trifluoromethyl, carboxyl, nitro, 1-4C-alkyl or 1-4C-alkoxy,
• R72 is 1-4C-alkoxy,
• R8 is 1-4C-alkyl, hydroxy-1-4C-alkyl, 1-4C-alkoxy-1-4C-alkyl, amino, C(O)N(H)R9, phenyl, HetA, aryl-1-4C-alkyl, HetB-1-4C-alkyl, cyano-1-4C-alkyl, 1-4C-alkoxycarbonyl-1-4C-alkyl or R14- and/or R15- and/or R16-substituted phenyl, wherein
• R9 is hydrogen, phenyl or R91- and/or R92-substituted phenyl, wherein
• R91 is halogen, 1-4C-alkyl, 1-4C-alkoxy, nitro, trifluoromethyl or completely or predominantly fluorine-substituted 1-4C-alkoxy,
• R92 is halogen or 1-4C-alkoxy,
• HetA is an unsubstituted or R10- and/or R11-substituted heteroaryl radical which is selected from the group consisting of pyrrolyl, furanyl, thiophenyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, thiadiazolyl, pyridinyl, pyrimidinyl, pyrazinyl and pyridazinyl, wherein
• R10 is 1-4C-alkyl, phenyl, halogen or trifluoromethyl,
• R11 is 1-4C-alkyl,
• aryl is phenyl or R12- and/or R13-substituted phenyl, wherein
• R12 is 1-4C-alkyl, 1-4C-alkoxy, halogen, nitro or hydroxyl,
• R13 is 1-4C-alkoxy or halogen,
• HetB is an unsubstituted or R12- and/or R13-substituted indolyl radical,
• R14 is 1-4C-alkyl, trifluoromethyl, 1-4C-alkoxy, halogen, nitro, hydroxyl, amino, mono- or di-1-4C-alkylamino or completely or predominantly fluorine-substituted 1-4C-alkoxy,
• R15 is 1-4C-alkyl, 1-4C-alkoxy, halogen or completely or predominantly fluorine-substituted 1-4C-alkoxy,
• R16 is 1-4C-alkoxy,
• and the salts and the E/Z isomers of these compounds.