Novel imidazo[1,3,5]triazinones and the use thereof

A novel imidazo[1,3,5]triazinone of the general formula (I)

• 99
• in which
• R1 represents straight-chain or branched alkyl having up to 4 carbon atoms,
• R2 represents straight-chain or branched alkyl having up to 4 carbon atoms or
• represents (C3-C8)-cycloalkyl,
• R3 represents hydrogen or straight-chain or branched alkyl having up to 4 carbon atoms,
• R4 and R5 are identical or different and represent hydrogen, (C1-C6)-alkoxy or hydroxyl or represent (C1-C8)-alkyl which is optionally substituted, up to 3 times, identically or differently, by hydroxyl or (C1-C6)-alkoxy or by radicals of the formulae
• 100
• in which
• R6 and R7 are identical or different and denote hydrogen or (C1-C6)-alkyl,
• and/or, for its part, (C1-C8)-alkyl is optionally substituted by phenyl or phenoxy which, for their part, are optionally substituted, once to three times, identically or differently, by halogen, hydroxyl, (C1-C6)-alkoxy or (C1-C6)-alkyl or by a radical of the formula —SO2NR8R9,
• in which
• R8 and R9 are identical or different and denote hydrogen or (C1-C6)-alkyl,
• or
• R4 represents hydrogen or methyl,
• and
• R5 represents radicals of the formulae
• 101
• or
• represents phenyl which is optionally substituted, up to 3 times, identically or differently, by halogen, acetyl or (C1-C6)-alkoxy or by radicals of the formulae
• 102
• —NR10R11
• or
• —CH2—P(O)(OR12)(OR13)
• in which
• R10 and R11 are identical or different and denote hydrogen or (C1-C4)-alkyl,
• R12 and R13 are identical or different and denote hydrogen or (C1-C6)-alkyl,
• or
• R4 and R5, together with the nitrogen atom to which they are bonded, form radicals of the formulae
• 103
• in which
• R14 and R15 are identical or different and denote hydroxyl, hydrogen or (C1-C4)-alkyl which is optionally substituted by hydroxyl,
• or
• R14 denotes hydrogen,
• and
• R15 denotes a radical of the formula
• 104
• or
• R14 and R15 together form a radical of the formula ═N—O—CH3,
• R16 denotes hydrogen or (C1-C6)-alkyl which is optionally substituted by hydroxyl, or
• a 5-to 6-membered, aromatic heterocycle having up to 3 heteroatoms from the series S, N and/or O,
• and the salts, N-oxides and isomeric forms thereof.