Substituted 4-aryl-1,4-dihydro-1,6-naphthyridines and use thereof

A compound of the formula (I)

• in which
• Ar is a group of the formula
• in which
• * is the linkage point,
• R5 is hydrogen or halogen,
• R6 is methyl or ethyl,
• R7 is hydrogen, fluorine, chlorine, cyano, nitro, trifluoromethyl or (C1-C4)-alkyl,
• R8 is hydrogen or fluorine,
• R9 is halogen, (C1-C4)-alkyl, trifluoromethyl, (C1-C4)-alkoxy or trifluoromethoxy,
• R10 is cyano or nitro,
• R11 is hydrogen, halogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, (C1-C4)-alkylthio or di-(C1-C4)-alkylamino, it being possible for the alkyl group in said (C1-C4)-alkyl, (C1-C4)-alkoxy and (C1-C4)-alkylthio radicals in each case to be substituted up to three times by fluorine,
• or
• phenyl, which may be substituted by halogen, (C1-C4)-alkyl or trifluoromethyl,
• R12 is hydrogen, halogen or (C1-C4)-alkyl,
• D is CH, C—R9 or N,
• and
• n is the number 0, 1 or 2,
• it being possible in the case where the substituent R9 occurs more than once for its meanings to be identical or different,
• R1 is cyano, nitro or a group of the formula —C(═O)—R13 in which
• R13 is (C1-C6)-alkyl which may be substituted by (C3-C7)-cycloalkyl or once to three times by fluorine, or phenyl which may be substituted by halogen, cyano, (C1-C4)-alkyl, trifluoromethyl, (C1-C4)-alkoxy or trifluoromethoxy, or (C3-C7)-cycloalkyl,
• R2 is (C1-C4)-alkyl, trifluoromethyl, cyclopropyl, cyclobutyl, (C1-C4)-alkoxy or (C1-C4)-alkylthio,
• R3 is (C1-C6)-alkyl, (C1-C6)-alkoxy, trifluoromethoxy, (C1-C6)-alkylthio, amino, mono-(C1-C6)-alkylamino or a group of the formula —O—SO2—R14,
• where said (C1-C6)-alkyl, (C1-C6)-alkoxy and (C1-C6)-alkylthio radicals may in each case be substituted by (C3-C7)-cycloalkyl,
• and
• R14 is (C1-C6)-alkyl, trifluoromethyl, (C3-C7)-cycloalkyl, phenyl or 5- or 6-membered heteroaryl having up to two heteroatoms from the series N, O and/or S,
• it being possible for phenyl and heteroaryl in turn each to be substituted once or twice, identically or differently, by halogen, cyano, nitro, (C1-C4)-alkyl, trifluoromethyl, (C1-C4)-alkoxy and/or trifluoromethoxy,
• and
• R4 is hydrogen, fluorine, (C1-C4)-alkyl, trifluoromethyl, (C1-C4)-alkoxy, trifluoromethoxy, (C1-C4)-alkylthio, amino, mono-(C1-C4)-alkylamino or di-(C1-C4)-alkylamino,
• and the salts thereof.