Organic compounds

1. A compound of the formula

where

X is methylene or hydroxymethylene;

R 1 a) is hydrogen; or

b) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, or heterocyclyl-C 0 -C 4 -alkyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, halogen, cyano, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, C 1 -C 8 alkoxycarbonyl, aryl or heterocyclyl;

R 2 a) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkylsulphonyl, C 3 -C 8 -cycloalkylsulphonyl, aryl -C 0 -C 8 -alkylsulphonyl, heterocyclylsulphonyl, C 3 -C 12 -cycloalkyl-C 1 -C 8 -alkanoyl, C 3 -C 12 -cycloalkyl-C 3 -C 8 -cycloalkanoyl, aryl-C 1 -C 8 alkanoyl, heterocyclyl-C 1 -C 8 alkanoyl, aryl-C 3 -C 8 -cycloalkanoyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, optionally N-mono or N,N-di-C 1 -C 8 -alkylated carbamoyl-C 0 -C 8 -alkyl, or heterocyclyl-C 0 -C 4 -alkyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkoxy, amino, C 1-6 -alkylamino, di-C 1-6 -alkylamino, C 0 -C 6 -alkylcarbonylamino, halogen, cyano, hydroxyl, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, optionally N-mono or N,N-di-C 1 -C 8 alkylated carbamoyl, C 1 -C 8 alkoxycarbonyl, C 1-6 -alkylenedioxy, aryl or heterocyclyl; or

b) together with R 1 and the nitrogen atom to which they are bonded, is a saturated or partly unsaturated 4-8-membered heterocyclic ring which may contain an additional nitrogen, oxygen or sulphur atom or an —SO- or —SO2-group, and the additional nitrogen atom may optionally be substituted by C 1 -C 8 -alkyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, aryl or heterocyclyl radicals, in which case this heterocyclic ring may be part of a bicyclic or tricyclic ring system having a total of up to 16 members and the second ring may also contain a nitrogen, oxygen or sulphur atom or an —SO- or —SO2-group, and the nitrogen atom of the second ring may optionally be substituted by C 1 - C 8 -alkyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, aryl or heterocyclyl radicals, and all ring systems mentioned may be substituted by 1-4 C 1 -C 8 -alkyl, halogen, hydroxyl, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxy-C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy-C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxycarbonylamino, C 1 -C 8 -alkylcarbonylamino, C 1 -C 8 -alkylamino, N,N-di-C 1 -C 8 -alkylamino, aryl-C 0 -C 4 -alkyl, aryloxy -C 0 -C 4 -alkyl, aryl-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy, aryloxy-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy, heterocyclyl-C 0 -C 4 -alkyl, heterocyclyloxy-C 0 -C 4 -alkyl, heterocyclyl-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy or heterocyclyloxy-C 0 - C 4 -alkyl-C 1 -C 8 -alkoxy;

R 3 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 8 -alkoxycarbonyl or C 1 -C 8 -alkanoyl;

R 4 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 8 -alkoxycarbonyl or C 1 -C 8 -alkanoyl;

R 5 is hydrogen, or C 1 -C 8 -alkyl;

(A) R 6 is a heterocyclyl radical which is substituted by from one to four radicals selected from C 1 -C 6 -alkyl, C 3-8 -cycloalkyl, C 3-8 -cycloalkoxy, C 3-8 cycloalkoxy -C 1-6 alkyl, C 3-8 -cycloalkoxy, -C 1-6 alkoxy, C 1-6 -alkylamino, di-C 1 -C 6 -alkylamino, amino-C 1-6 -alkyl, amino-C 2-7 -alkoxy, polyhalo-C 1-6 -alkyl, polyhalo-C 2-7 -alkoxy, nitro, amino, C 2 -C 6 -alkenyl, C 1 -C 6 -alkoxy, C 1 -C 6 -alkanoyloxy, hydroxyl, halogen, oxide, oxo, cyano, carbamoyl, carboxy, C 1 -C 6 -alkylenedioxy, phenyl, phenoxy, phenylthio, phenyl-C 1 -C 6 -alkyl or phenyl-C 1 -C 6 -alkoxy, each of which are optionally substituted by halogen, C 1 -C 6 -alkyl, C 1-6 -alkoxy, hydroxyl, C 1 -C 6 -alkylamino, di-C 1 -C 6 -alkylamino, C 1-6 -alkoxycarbonyl, hydroxy-C 1-6 -alkyl or trifluoromethyl, pyridylcarbonylamino-C 1-6 -alkyl, C 2-7 -alkenyloxy, C 1-6 alkoxy- C 1-6 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkoxy-C 1-6 -alkyl, methoxybenzyloxy, hydroxybenzyloxy, methylenedioxybenzyloxy, dioxolanyl-C 1-6 -alkoxy, C 3-8 -cycloalkyl-C 1-6 alkyl, C 3-8 -cycloalkyl-C 1-6 -alkoxy, hydroxy-C 2-7 -alkoxy, carbamoyloxy-C 2-7 -alkoxy, pyridylcarbamoyloxy-C 2-7 -alkoxy, benzoyloxy-C 2-7 -alkoxy, C 1-6 -alkoxycarbonyl, C 1-6 -alkylcarbonylamino, C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, C 1-6 -alkylcarbonylamino-C 2-7 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkylcarbonylamino-C 2-7 -alkoxy, C 3-8 -cycloalkylcarbonylamino-C 1-6 -alkyl, C 3-8 -cycloalkylcarbonylamino-C 2-7 -alkoxy, C 1-6 alkoxy, C 1-6 alkyl, hydroxy-C 1-6 -alkyl, hydroxy-C 2-7 -alkoxy-C 1-6 -alkyl, hydroxy-C 2-7 -alkoxy-C 1-6 -alkoxy, C 1-6 -alkoxycarbonyl -amino-C 1-6 -alkyl, C 1-6 -alkoxycarbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonylamino -C 1-6 -alkyl, C 1-6 -alkylaminocarbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy-C 1-6 -alkyl, di-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, di-C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkylcarbonyloxy-C 1-6 -alkyl, C 1-6 -alkylcarbonyloxy-C 2-6 -alkoxy, cyano-C 1-6 -alkyl, cyano-C 1-6 -alkoxy, 2-oxooxazolidinyl-C 1-6 -alkyl, 2-oxo-oxazolidinyl-C 1-6 -alkoxy, C 1-6 -alkoxycarbonyl-C 1-6 -alkyl, C 1-6 -alkoxycarbonyl-C 1-6 -alkoxy, C 1-6 -alkylsulphonylamino-C 1-6 -alkyl, C 1-6 -alkylsulphonylamino-C 2-7 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 alkylsulphonylamino -C 1-6 alkyl, (N-C 1-6 alkyl)-C 1-6 -alkylsulphonylamino-C 2-7 alkoxy, C 1-6 alkylamino-C 1-6 -alkyl, C 1-6 -alkylamino-C 2-7 -alkoxy, di-C 1-6 alkylamino-C 1-6 alkyl, di-C 1-6 -alkylamino-C 2-7 -alkoxy, C 1-6 -alkylsulphonyl-C 1-6 -alkyl, C 1-6 -alkylsulphonyl-C 1-6 -alkoxy, carboxy-C 1-6 -alkyl, carboxy-C 1-6 -alkoxy, carboxy-C 1-6 -alkoxy-C 1-6 -alkyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonyl, acyl-C 1-6 -alkoxy-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkoxycarbonylamino, (N-hydroxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-hydroxy)-C 1-6 alkylaminocarbonyl -C 1-6 -alkoxy, (N-hydroxy)aminocarbonyl-C 1-6 -alkyl, (N-hydroxy)aminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkoxy-aminocarbonyl-C 1-6 -alkyl, 6-alkoxyaminocarbonyl-C 1-6 -alkoxy, (N-C 1-6 -alkoxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-C 1-6 -alkoxy)-C 1-6 alkylamino -carbonyl-C 1-6 -alkoxy, (N-acyl)-C 1-6 -alkoxy-C 1-6 -alkylamino, C 1 -6 -alkoxy-C 1-6 -alkylcarbamoyl, (N-C 1-6 -alkoxy)-C 1-6 -alkoxy-C 1-6 C 1-6 alkylcarbamoyl, -C 1-6 alkoxy-C 1-6 -alkylcarbonyl, C 1-6 -alkoxy-C 1 - 6 -alkylcarbonylamino, (N-C 1 - 6 -alkyl)-C 1-6 -alkoxy-C 1 - 6 alkylcarbonylamino, 1-C 1-6 -alkoxy-C 1-6 alkylimidazol-2yl, 1alkoxy-C 1-6 -alkyltetrazol-5-yl, 5-C 1-6 -alkoxy-C 1-6 -alkyltetrazol-1-yl, 2C 1-6 alkoxy-C 1-6 alkyl-4oxoimidazol-1-yl, carbamoyl-C 1-6 -alkyl, carbamoyl-C 1-6 -alkoxy, C 1-6 -alkylcarbamoyl, di-C 1-6 -alkylcarbamoyl, C 1-6 -alkylsulphonyl, C 1-6 -alkylamidinyl, acetamidinyl-C 1-6 -alkyl, O-methyloximyl-C 1-6 -alkyl, O,N-dimethylhydroxylamino-C 1-6 -alkyl, C 3-6 -cycloalkyl-C 1-6 -alkanoyl, aryl-C 1-6 -alkanoyl or heterocyclyl-C 1-6 -alkanoyl, or else pyridyl, pyridyloxy, pyridylthio, pyridylamino, pyridyl-C 1-6 -alkoxy, pyrimidinyl, pyrimidinyloxy, pyrimidinylthio, pyrimidinylamino, pyrimidinyl-C 1-6 -alkyl, pyrimidinyl -C 1-6 -alkoxy, thienyl, thienyl-C 1-6 -alkyl, thienyl-C 1-6 -alkoxy, furyl, furyl-C 1-6 -alkyl or furyl -C 1-6 -alkoxy, each of which is optionally substituted by halogen, C 1-6 -alkyl, C 1-6 -alkoxy or dihydroxy-C 1-6 -alkylaminocarbonyl, piperidinoalkyl, piperidinoalkoxy, piperidinoalkoxyalkyl, morpholinoalkyl, morpholinoalkoxy, morpholinoalkoxyalkyl, piperazinoalkyl, piperazinoalkoxy, piperazinoalkoxyalkyl,[1,2,4]-triazol-1-ylalkyl, [1,2,4]-triazol-1-ylalkoxy,[1,2,4]-triazol-4-ylalkyl,[1,2,4]-triazol-4-ylalkoxy,[1,2,4]-oxadiazol-5-ylalkyl,[1,2,4]-oxadiazol-5-ylalkoxy, 3-methyl-[1,2,4]-oxadiazol-5-ylalkyl, 3-methyl-[1,2,4]-oxadiazol-5-ylalkoxy, 5-methyl-[1,2,4]-oxadiazol-3-ylalkyl, 5methyl [1,2,4]-oxadiazol-3-ylalkoxy, tetrazol-1-ylalkyl, tetrazol-1-ylalkoxy, tetrazol-2-ylalkyl, tetrazol-2-ylalkoxy, tetrazol-5-ylalkyl, tetrazol-5-ylalkoxy, 5-methyl-tetrazol-1-ylalkyl, 5-methyl-tetrazol-l-ylalkoxy, thiazol-4-ylalkyl, thiazol-4-ylalkoxy, oxazol-4-ylalkyl, oxazol -4-ylalkoxy, 2-oxo-pyrrolidinylalkyl, 2-oxo-pyrrolidinylalkoxy, imidazolylalkyl, imidazolylalkoxy, 2-methyl-imidazolylalkyl, 2-methyl-imidazolylalkoxy, N-methyl -piperazinoalkyl, N-methylpiperazinoalkoxy, N-methylpiperazinoalkoxyalkyl, dioxolanyl, dioxanyl, dithiolanyl, dithianyl, pyrrolidinyl, piperidinyl, piperazinyl, pyrrolyl, 4methyl -piperazinyl, morpholinyl, thiomorpholinyl, 2-hydroxymethylpyrrolidinyl, 3hydroxy -pyrrolidinyl, 3,4-dihydroxypyrrolidinyl, 3-acetamidomethylpyrrolidinyl, 3-C 1-6 alkoxy -C 1-6 -alkyl-pyrrolidinyl, 4-hydroxypiperidinyl, 4-oxopiperidinyl, 3,5-dimethylmorpholinyl, 4,4-dioxothiomorpholinyl, 4-oxothiomorpholinyl, 2,6-dimethylmorpholinyl, 2-oxo -imidazolidinyl, 2-oxooxazolidinyl, 2-oxopyrrolidinyl, 2oxo -[1,3]oxazinyl, 2oxo -tetrahydropyrimidinyl and the —O—CH 2 CH(OH)CH 2 NR x radical where NR x is a mono- or di-C 1-6 -alkylamino, piperidino, morpholino, piperazino or N-methylpiperazino radical; or

(B) R 6 is phenyl substituted by C 1 -C 6 -alkylenedioxy, furyl, thienyl, pyridyl, pyrimidyl, indolyl, quinolinyl, pyrazinyl, triazolyl, imidazolyl, benzothiazolyl, pyranyl, tetrahydropyranyl, azetidinyl, morpholinyl, tetrahydroquinolyl, tetrahydroisoquinolyl, quinazolinyl, quinoxalinyl, isoquinolyl, benzo[b]thienyl, isobenzofuranyl, benzoimidazolyl, 2- oxobenzoimidazolyl, oxazolyl, thiazolyl, pyrrolyl, pyrazolyl, triazinyl, dihydrobenzofuranyl, 2-oxodihydrobenzo[d][1,3]oxazinyl, 4-oxodihydroimidazolyl, 5-oxo-4H[1,2,4]triazinyl, 3-oxo-4H-benzo [1,4]thiazinyl, tetrahydroquinoxalinyl, 1,1,3-trioxodihydro-2H-1λ 6 -benzo[1,4]thiazinyl, 1-oxopyridyl, dihydro-3H -benzo[1,4]oxazinyl, 3,4-dihydro-2H-benzo[1,4]oxazinyl, 2-oxotetrahydrobenzo[e][1,4]diazepinyl, 2-oxodihydrobenzo[e][1,4]diazepinyl, 1H -pyrrolizinyl, phthalazinyl, 1-oxo-3H-isobenzofuranyl, 4-oxo-3H-thieno[2,3-d]pyrimidinyl, 3-oxo-4H-benzo[1,4]oxazinyl, [1,5]naphthyridyl, dihydro-2H-benzo [1,4]thiazinyl, 1,1-dioxodihydro-2H-benzo[1,4]thiazinyl, 2-oxo-1H-pyrido[2,3-b][1,4]oxazinyl, dihydro-1H-pyrido[2,3-b][1,4]oxazinyl, 1H-pyrrolo[2,3-b]pyridyl, benzo [1,3]dioxolyl, benzooxazolyl, 2-oxobenzooxazolyl, 2-oxo-1,3-dihydroindolyl, 2,3-dihydroindolyl, indazolyl, benzofuranyl, dioxolanyl, dioxanyl, dithiolanyl, dithianyl, pyrrolidinyl, piperidinyl, piperazinyl, 4-methylpiperazinyl, morpholinyl, thiomorpholinyl, 2-hydroxymethylpyrrolidinyl, 3-hydroxypyrrolidinyl, 3,4-dihydroxypyrrolidinyl, 4-hydroxypiperidinyl, 4-oxopiperidinyl, 3,5-dimethylmorpholinyl, 4,4dioxothio -morpholinyl, 4-oxothiomorpholinyl, 2,6-dimethylmorpholinyl, tetrahydropyranyl, 2-oxoimidazolidinyl, 2-oxooxazolidinyl, 2-oxopiperidinyl, 2-oxopyrrolidinyl, 2-oxo[1,3]oxazinyl, 2-oxoazepanyl, or 2-oxotetrahydropyrimidinyl;

or a prodrug thereof, or a salt thereof.

2. The compound according to claim 1 , in which R 2 is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkylsulphonyl, C 3 -C 8 -cycloalkylsulphonyl, aryl-C 0 -C 8 -alkylsulphonyl, C 3 -C 12 -cycloalkyl-C 1 -C 8 -alkanoyl, C 3 -C 12 -cycloalkyl-C 3 -C 8 -cycloalkanoyl, aryl-C 1 -C 8 -alkanoyl, heterocyclyl-C 1 -C 8 -alkanoyl, or C 1 -C 8 alkanoyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkoxy, C 0 -C 6 -alkylcarbonylamino, halogen, cyano, hydroxyl, oxide, trifluoromethyl, C 1 -C 8 -alkoxy or optionally N-mono- or N,N- di-C 1 -C 8 -alkylated carbamoyl.

3. The compound according to claim 1 , in which

R 1 a) is hydrogen; or

b) is C 1 -C 8 -alkyl or C 3 -C 8 -cycloalkyl;

R 2 a) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkanoyl, heterocyclyl-C 1 -C 8 -alkanoyl, C 3 -C 12 -cycloalkyl-C 1 -C 8 -alkanoyl or aryl-C 1 -C 8 -alkanoyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, C 1-6 -alkylamino, cyano, halogen, hydroxyl, C 1 -C 6 -alkanoylamino, C 1 -C 8 -alkoxy, oxide, oxo, trifluoromethyl or aryl; or

b) together with R 1 and the nitrogen atom to which they are bonded, is a saturated or partly unsaturated, 4-8-membered heterocyclic ring which may contain an additional nitrogen or oxygen atom, in which case the additional nitrogen atom may optionally be substituted by C 1 -C 8 -alkyl or C 1 -C 8 -alkanoyl, in which case this heterocyclic ring may be part of a bicyclic or tricyclic ring system having a total of up to 16 ring members and the second ring may also contain a nitrogen or oxygen atom, and the nitrogen atom of the second ring may optionally be substituted by C 1 -C 8 -alkyl or C 1 -C 8 -alkanoyl, and all ring systems mentioned may be substituted by 1-4 C 1 -C 8 -alkyl, hydroxyl, oxide, oxo, C 1 -C 8 alkoxy, C 1 -C 8 -alkoxy-C 1 -C 8 alkoxy, C 1 -C 8 -alkanoylamino or aryloxy-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy.

4. The compound according to claim 1 , in which X is methylene;

R 1 a) is hydrogen; or

b) is C 1 -C 8 -alkyl or C 3 -C 8 -cycloalkyl;

R 2 a) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkanoyl, heterocyclyl-C 1 -C 8 -alkanoyl, C 3 -C 12 -cycloalkyl-C 1 -C 8 alkanoyl or aryl-C 1 -C 8 -alkanoyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, C 1 -C 6 -alkylamino, cyano, halogen, hydroxyl, C 1 -C 6 -alkanoylamino, C 1 -C 8 -alkoxy, oxide, oxo, trifluoromethyl or aryl; or

b) together with R 1 and the nitrogen atom to which they are bonded, is a saturated or partly unsaturated, 4-8-membered heterocyclic ring which may contain an additional nitrogen or oxygen atom, in which case the additional nitrogen atom may optionally be substituted by C 1 -C 8 -alkyl or C 1 -C 8 -alkanoyl, in which case this heterocyclic ring may be part of a bicyclic or tricyclic ring system having a total of up to 16 ring members and the second ring may also contain a nitrogen or oxygen atom, and the nitrogen atom of the second ring may optionally be substituted by C 1 -C 8 -alkyl or C 1 -C 8 -alkanoyl, and all ring systems mentioned may be substituted by 1-4 C 1 -C 8 -alkyl, hydroxyl, oxide, oxo, C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxy-C 1 -C 8 -alkoxy, C 1 -C 8 -alkanoylamino or aryloxy-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy;

R 3 is hydrogen;

R 4 is hydrogen;

R 5 is hydrogen or C 1 -C 8 -alkyl; and

R 6 is as defined in claim 1 .

5. The compound according to claim 1 , in which the R 6 radical is selected from the group consisting of furyl, thienyl, pyridyl, pyrimidyl, indolyl, quinolinyl, benzoimidazolyl, di-C 1-6 -alkoxypyrimidinyl, 2- and 5-benzo[b]thienyl, 6- and 7-isoquinolyl, 6-and 7-tetrahydroquinolyl, 6- and 7-tetrahydroisoquinolyl, 6-quinoxalinyl, 6- and 7-quinazolinyl, dihydro-3H-benzo[1,4]oxazinyl, 3,4-dihydro-2H-benzo[1,4]oxazinyl, 3-oxo-4H -benzo[1,4]oxazinyl, 2-oxobenzooxazolyl, 2-oxo-1,3-dihydroindolyl, 2,3-dihydroindolyl, indazolyl or benzofuranyl; and

6- and 7-quinolyl, 6- and 7-isoquinolyl, 6- and 7-tetrahydroquinolyl, oxotetrahydroquinolyl, 6-and 7-tetrahydroisoquinolyl, 6-quinoxalinyl, 6- and 7-quinazolinyl, indolyl, dihydro-3H -benzo[1,4]oxazinyl, 3,4-dihydro-2H-benzo[1,4]oxazinyl, 3-oxo-3,4-dihydro-2H -benzo[1,4]oxazinyl, 3-oxo-4H-benzo[1,4]oxazinyl, 2-oxobenzooxazolyl, 2-oxo-2,3-dihydrobenzooxazolyl, 2-oxo-1,3-dihydroindolyl, 2,3-dihydroindolyl, indazolyl, benzofuranyl, 2,3-dihydrobenzothiazinyl, imidazolyl, benzoimidazolyl, pyridinyl, pyrrolo[2,3-b]pyridinyl, pyrrolo[3,2-c]pyridinyl, pyrrolo[2,3-c]pyridinyl, pyrrolo[3,2-b]pyridinyl, [1,2,3]triazolo[1,5-a]pyridinyl, [1,2,4]triazolo[4,3-a]pyridinyl, imidazo[1,2-a]pyrimidinyl, imidazo[1,5-a]pyridinyl or naphthyl or cyclohexenophenyl, each of which is substituted by from one to four radicals selected from C 1-6 -alkyl, cyano, oxo, oxide, trifluoromethyl, hydroxyl, halogen, carbamoyl, carboxy, C 1-6 -alkoxy, hydroxy-C 2-7 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkoxy, di-C 1-6 -alkylamino, 2,3-dihydroxypropoxy, 2,3-dihydroxypropoxy-C 1-6 -alkoxy, 2,3-dimethoxypropoxy, methoxybenzyloxy, hydroxybenzyloxy, phenethyloxy, methylenedioxybenzyloxy, dioxolanyl -C 1-6 -alkoxy, cyclopropyl-C 1-6 -alkoxy, pyridylcarbamoyloxy-C 1-6 -alkoxy, 3-morpholino-2-hydroxypropoxy, benzyloxy-C 1-6 -alkoxy, picolyloxy, C 1-6 -alkoxycarbonyl, C 1-6 -alkoxy-C 1-6 -alkoxy-C 1-6 -alkyl, C 1-6 -alkylcarbonylamino, C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, C 1-6 -alkylcarbonylamino-C 1-6 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, (N-C 1-6 -alkyl) -C 1-6 -alkylcarbonylamino-C 1-6 -alkoxy, C 3-6 -cycloalkylcarbonylamino-C 1-6 -alkyl, C 3-6 -cycloalkylcarbonylamino-C 1-6 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkyl, hydroxy-C 1-6 -alkyl, hydroxy-C 2-7 -alkoxy-C 1-6 -alkyl, hydroxy-C 2-7 -alkoxy-C 1-6 -alkoxy, C 1-6 -alkoxycarbonylamino-C 1-6 -alkyl, C 1-6 -alkoxycarbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonylamino-C 1-6 -alkyl, C 1-6 -alkylaminocarbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy-C 1-6 -alkyl,di-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, di-C 1-6 alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 alkylcarbonyloxy -C 1-6 -alkyl, C 1-6 -alkylcarbonyloxy-C 1-6 -alkoxy, cyano-C 1-6 -alkyl, cyano-C 1-6 -alkoxy, 2-oxooxazolidinyl-C 1-6 -alkyl, 2-oxooxazolidinyl-C 1-6 -alkoxy, C 1-6 -alkoxycarbonyl-C 1-6 -alkyl, C 1-6 -alkoxycarbonyl-C 1-6 -alkoxy, C 1-6 -alkylsulphonylamino-C 1-6 -alkyl, C 1-6 -alkylsulphonylamino-C 2 -7 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 -alkylsulphonylamino-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkylsulphonylamino-C 1-6 -alkoxy, C 1-6 -alkylamino-C 1-6 -alkyl, C 1-6 -alkylamino-C 2-7 -alkoxy, di-C 1-6 -alkylamino-C 1-6 -alkyl, Di-C 1-6 -alkylamino-C 2-7 -alkoxy, C 1-6 -alkylsulphonyl-C 1-6 -alkyl, C 1-6 -alkylsulphonyl-C 1-6 -alkoxy, carboxy-C 1-6 -alkyl, carboxy-C 1-6 -alkoxy, carboxy-C 1-6 -alkoxy-C 1-6 -alkyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonyl, acyl-C 1-6 -alkoxy-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 alkoxy -carbonylamino, (N-hydroxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-hydroxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, (N-hydroxy)aminocarbonyl-C 1-6 -alkyl, (N-hydroxy) aminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkoxyaminocarbonyl-C 1-6 -alkyl, 6-alkoxy -aminocarbonyl-C 1-6 -alkoxy, (N-C 1-6 -alkoxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-C 1-6 -alkoxy) -C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, (N-acyl)-C 1-6 -alkoxy-C 1-6 -alkylamino, C 1-6 -alkoxy-C 1-6 -alkylcarbamoyl, (N-C 1-6 -alkyl)-C 1-6 -alkoxy-C 1-6 -alkylcarbamoyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonylamino, (N-C 1-6 -alkyl)-C 1-6 -alkoxy-C 1-6 -alkylcarbonylamino, 1-C 1-6 -alkoxy-C 1-6 -alkylimidazol-2-yl, 1-C 1-6 -alkoxy-C 1-6 -alkyltetrazol-5-yl, 5-C 1-6 -alkoxy-C 1-6 -alkyltetrazol-1-yl, 2-C 1-6 -alkoxy-C 1-6 -alkyl-4-oxoimidazol-1-yl, carbamoyl -C 1-6 -alkyl, carbamoyl-C 1-6 -alkoxy, C 1-6 -alkylcarbamoyl, di-C 1-6 -alkylcarbamoyl, C 1-6 -alkylsulphonyl, piperidinoalkyl, piperidinoalkoxy, piperidinoalkoxyalkyl, morpholinoalkyl, morpholinoalkoxy, morpholinoalkoxyalkyl, piperazinoalkyl, piperazinoalkoxy, piperazinoalkoxyalkyl, [1,2,4]-triazol-1-ylalkyl, [1,2,4]-triazol-1-ylalkoxy, [1,2,4]-triazol-4-ylalkyl, [1,2,4]-triazol-4-ylalkoxy, [1,2,4]-oxadiazol-5-ylalkyl, [1,2,4]-oxadiazol-5-ylalkoxy, 3-methyl-[1,2,4]-oxadiazol-5-ylalkyl, 3-methyl-[1,2,4]-oxadiazol -5-ylalkoxy, 5-methyl-[1,2,4]-oxadiazol-3-ylalkyl, 5methyl-[1,2,4]-oxadiazol-3-ylalkoxy, tetrazol-1-ylalkyl, tetrazol-1-ylalkoxy, tetrazol-2-ylalkyl, tetrazol-2-ylalkoxy, tetrazol-5-ylalkyl, tetrazol-5-ylalkoxy, 5-methyltetrazol-1-ylalkyl, 5-methyltetrazol-1-ylalkoxy, thiazol-4-ylalkyl, thiazol-4-ylalkoxy, oxazol- 4-ylalkyl, oxazol-4-ylalkoxy, 2-oxopyrrolidinylalkyl, 2-oxopyrrolidinylalkoxy, imidazolylalkyl, imidazolylalkoxy, 2-methylimidazolylalkyl, 2-methylimidazolylalkoxy, N-methylpiperazinoalkyl, N-methylpiperazinoalkoxy, N-methylpiperazinoalkoxyalkyl, pyrrolidinyl, piperidinyl, piperazinyl, pyrrolyl, 4-methylpiperazinyl, morpholinyl, thiomorpholinyl, 2-hydroxymethylpyrrolidinyl, 3-hydroxypyrrolidinyl, 3,4-dihydroxypyrrolidinyl, 3-acetamidomethylpyrrolidinyl, 3-C 1-6 alkoxy -C 1-6 -alkyl-pyrrolidinyl, 4-hydroxypiperidinyl, 4-oxopiperidinyl, 3,5-dimethylmorpholinyl, 4,4-dioxothiomorpholinyl, 4-oxothiomorpholinyl, 2,6-dimethylmorpholinyl, 2-oxoimidazolidinyl, 2-oxooxazolidinyl, 2-oxopyrrolidinyl, 2-oxo[1,3]oxazinyl and 2-oxotetrahydropyrimidinyl.

6. A compound of the formula

where

X is methylene or hydroxymethylene;

R 1 a) is hydrogen; or

b) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, or heterocyclyl-C 0 -C 4 -alkyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, halogen, cyano, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxycarbonyl, aryl or heterocyclyl;

R 2 a) is C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 1 -C 8 -alkylsulphonyl, C 3 -C 8 -cycloalkylsulphonyl, aryl -C 0 -C 8 -alkylsulphonyl, heterocyclylsulphonyl, C 3 -C 12 -cycloalkyl-C 1 -C 8 -alkanoyl, C 3 -C 12 -cycloalkyl-C 3 -C 8 -cycloalkanoyl, aryl-C 1 -C 8 -alkanoyl, heterocyclyl-C 1 -C 8 -alkanoyl, aryl-C 3 -C 8 -cycloalkanoyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyl, optionally N-mono or N, N-di-C 1 -C 8 -alkylated carbamoyl-C 0 -C 8 -alkyl, or heterocyclyl-C 0 -C 4 -alkyl, which radicals may be substituted by 1-4 C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkoxy, amino, C 1-6 -alkylamino, di-C 1-6 -alkylamino, C 0 -C 6 -alkylcarbonylamino, halogen, cyano, hydroxyl, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, optionally N-mono or N, N-di-C 1 -C 8 -alkylated carbamoyl, C 1 -C 8 -alkoxycarbonyl, C 1-6 -alkylenedioxy, aryl or heterocyclyl; or

b) together with R 1 and the nitrogen atom to which they are bonded, is a saturated or partly unsaturated 4-8-membered heterocyclic ring which may contain an additional nitrogen, oxygen or sulphur atom or an —SO - or —SO2-group, and the additional nitrogen atom may optionally be substituted by C l -C 8 -alkyl, C l -C 8 -alkanoyl, C l -C 8 -alkoxycarbonyl, aryl or heterocyclyl radicals, in which case this heterocyclic ring may be part of a bicyclic or tricyclic ring system having a total of up to 16 members and the second ring may also contain a nitrogen, oxygen or sulphur atom or an —SO - or —SO2-group, and the nitrogen atom of the second ring may optionally be substituted by C 1 -C 8 -alkyl, C 1 -C 8 -alkanoyl, C 1 -C 8 -alkoxycarbonyi, aryl or heterocyclyl radicals, and all ring systems mentioned may be substituted by 1-4 C 1 -C 8 -alkyl, halogen, hydroxyl, oxide, oxo, trifluoromethyl, C 1 -C 8 -alkoxy, C 1 -C 8 -alkoxy-C 1 -C 8 -alkyl, C l -C 8 -alkoxy-C 1 -C 8 -alkoxyl, C 1 -C 8 -alkoxycarbonylamino, C 1 -C 8 -alkylcarbonylamino, C 1 -C 8 -alkylamino, N,N-di-C 1 -C 8 -alkylamino, aryl-C 0 -C 4 -alkyl, aryloxy-C 0 -C 4 -alkyl, aryl-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy, aryloxy-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy, heterocyclyl-C 0 -C 4 -alkyl, heterocyclytoxy-C 0 -C 4 -alkyl, heterocyclyl-C 0 -C 4 -alkyl-C 1 -C 8 -alkoxy or heterocyclyloxy-C 0 -C 4 -alkyl-C l -C 8 -alkoxy;

R 3 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 8 -alkoxycarbonyl or C 1 -C 8 -alkanoyl;

R 4 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 8 -alkoxycarbonyl or C 1 -C 8 -alkanoyl;

R 5 is hydrogen, or C 1 -C 8 -alkyl;

R 6 is an unsubstituted polycyclic, unsaturated hydrocarbon radical excluding naphthyl, or a polycyclic, unsaturated hydrocarbon radical excluding naphthyl, which is substituted by from one to four radicals selected from C 1 -C 6 -alkyl, C 3-8 -cycloalkyl, C 3-8 -cycloalkoxy, C 3-8 -cycloalkoxy-C 1-6 -alkyl, C 3-8 cycloalkoxy -C 1-6 -alkoxy, C 1 -C 6 -alkylamino, di-C 1 -C 6 -alkylamino, amino-C 1-6 -alkyl, amino-C 2-7 -alkoxy, polyhalo-C 1-6 -alkyl, polyhalo-C 2-7 -alkoxy, nitro, amino, C 2 -C 6 -alkenyl, C l -C 6 -alkoxy, C 1 -C 6 -alkanoyloxy, hydroxyl, halogen, oxide, oxo, cyano, carbamoyl, carboxy, C 1 -C 6 -alkylenedioxy, phenyl, phenoxy, phenylthio, phenyl-C 1 -C 6 -alkyl or phenyl-C 1 -C 6 -alkoxy, each of which are optionally substituted by halogen, C l -C 6 -alkyl, C 1-6 -alkoxy, hydroxyl, C 1 -C 6 -alkylamino, di-C 1 -C 6 -alkylamino, C 1-6 -alkoxycarbonyl, hydroxy-C 1-6 -alkyl or trifluoromethyl, pyridylcarbonylamino-C 1-6 -alkyl, C 2-7 -alkenyloxy, C 1-6 -alkoxy-C 1-6 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkoxy-C 1-6 -alkyl, methoxybenzyloxy, hydroxybenzyloxy, methylenedioxybenzytoxy, dioxolanyl-C 1-6 -alkoxy, C 3-8 -cycloalkyl-C 1-6 -alkyl, C 3-8 -cycloalkyl-C 1-6 -alkoxy, hydroxy-C 2-7 -alkoxy, carbamoyloxy-C 2-7 -alkoxy, pyridylcarbamoyloxy-C 2-7 -alkoxy, benzoyloxy-C 2-7 -alkoxy, C 1-6 -alkoxycarbonyl, C 1-6 -alkylcarbonylamino, C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, C l-6 -alkylcarbonylamino-C 2-7 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 -alkylcarbonylamino-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkylcarbonylamino-C 2-7 -alkoxy, C 3-8 -cycloalkylcarbonylamino-C 1-6 -alkyl, C 3-8 -cycloalkylcarbonylamino-C 2-7 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkyl, hydroxy-C 1-6 -alkyl, hydroxy -C 2-7 -alkoxy-C 1-6 -alkyl, hydroxy-C 2-7 -alkoxy-C 1-6 -alkoxy, C 1-6 -alkoxycarbonylamino-C 1-6 -alkyl, C 1-6 -alkoxycarbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonylamino-C 1-6 -alkyl, C 1-6 -carbonylamino-C 2-7 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy-C 1-6 -alkyl,di-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, di-C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, C 1-6 -alkylcarbonyloxy-C 1-6 -alkyl, C 1-6 -alkylcarbonyloxy-C 2-6 -alkoxy, cyano-C 1-6 -alkyl, cyano -C 1-6 -alkoxy, 2-oxooxazolidinyl-C 1-6 -alkyl, 2-oxo-oxazolidinyl-C 1-6 -alkoxy, C 1-6 -alkoxycarbonyl-C 1-6 -alkyl, C 1-6 -alkoxycarbonyl-C 1-6 -alkoxy, C 1-6 -alkylsulphonylamino-C 1-6 -alkyl, C 1-6 -alkylsulphonylamino-C 2-7 -alkoxy, (N-C 1-6 -alkyl)-C 1-6 -alkylsulphonylamino-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkylsulphonylamino-C 2-7 -alkoxy, C 1-6 -alkylamino-C 1-6 -alkyl, C 1-6 -alkylamino-C 2-7 -alkoxy, di-C 1-6 -alkylamino-C 1-6 -alkyl, di-C 1-6 -alkylamino-C 2-7 -alkoxy, C 1-6 -alkylsulphonyl-C 1-6 -alkyl, C 1-6 -alkylsulphonyl-C 1-6 -alkoxy, carboxy-C 1-6 -alkyl, carboxy-C 1-6 -alkoxy, carboxy-C 1-6 -alkoxy-C 1-6 -alkyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonyl, acyl -C 1-6 -alkoxy-C 1-6 -alkyl, (N-C 1-6 -alkyl)-C 1-6 -alkoxycarbonylamino, (N-hydroxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-hydroxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, (N-hydroxy) aminocarbonyl-C 1-6 -alkyl, (N-hydroxy)aminocarbonyl-C 1-6 -alkoxy, C 1-6 alkoxy -aminocarbonyl-C 1-6 -alkyl, 6-alkoxyaminocarbonyl-C 1-6 -alkoxy, (N-C 1-6 alkoxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkyl, (N-C 1-6 -alkoxy)-C 1-6 -alkylaminocarbonyl-C 1-6 -alkoxy, (N-acyl) -C 1-6 -alkoxy-C 1-6 -alkylamino, C 1-6 -alkoxy-C 1-6 -alkylcarbamoyl, (N-C 1-6 alkyl)-C 1-6 -alkoxy-C 1-6 -alkylcarbamoyl, C 1-6 -alkoxy-C 1-6 -alkylcarbonyl, C 1-6 alkoxy-C 1-6 -alkylcarbonylamino, (N-C 1-6 -alkyl)-C 1-6 -alkoxy-C 1-6 -alkylcarbonylamino, 1-C 1-6 alkoxy -C 1-6 -alkylimidazol-2-yl, 1-C 1-6 -alkoxy-C 1-6 -alkyltetrazol-5-yl, 5-C 1-6 -alkoxy-C 1-6 -alkyltetrazol-1-yl, 2-C 1-6 -alkoxy-C 1-6 -alkyl-4-oxoimidazol-1-yl, carbamoyl-C 1-6 -alkyl, carbamoyl-C 1-6 -alkoxy, C 1-6 -alkylcarbamoyl, di-C 1-6 -alkylcarbamoyl, C 1-6 -alkylsulphonyl, C 1-6 -alkylamidinyl, acetamidinyl-C 1-6 -alkyl, O-methyloximyl-C 1-6 -alkyl, O,N -dimethylhydroxylamino-C 1-6 -alkyl, C 3-6 -cycloalkyl-C 1-6 -alkanoyl, aryl-C 1-6 -alkanoyl or heterocyclyl-C 1-6 -alkanoyl, or else pyridyl, pyridyloxy, pyridylthio, pyridylamino, pyridyl -C 1-6 -alkyl, pyridyl-C 1-6 -alkoxy, pyrimidinyl, pyrimidinyloxy, pyrimidinylthio, pyrimidinylamino, pyrimidinyl-C 1-6 -alkyl, pyrimidinyl-C 1-6 -alkoxy, thienyl, thienyl-C 1-6 -alkyl, thienyl-C 1-6 -alkoxy, furyl, furyl-C 1-6 -alkyl or furyl-C 1-6 -alkoxy, each of which is optionally substituted by halogen, C 1-6 -alkyl, C 1-6 -alkoxy or dihydroxy-C 1-6 -alkylaminocarbonyl, piperidinoalkyl, piperidinoalkoxy, piperidinoalkoxyalkyl, morpholinoalkyl, morpholinoalkoxy, morpholinoalkoxyalkyl, piperazinoalkyl, piperazinoalkoxy, piperazinoalkoxyalkyl, [1,2,4]-triazol-1-ylalkyl, [1,2,4]-triazol-1-ylalkoxy, [1,2,4]-triazol-4-ylalkyl, [1,2,4]-triazol-4-ylalkoxy, [1,2,4]-oxadiazol-5-ylalkyl, [1,2,4]-oxadiazol-5-ylalkoxy, 3-methyl-[1,2,4]-oxadiazol-5-ylalkyl, 3-methyl-[1,2,4]- -oxadiazol-5-ylalkoxy, 5-methyl-[1,2,4]-oxadiazol-3-ylalkyl, 5-methyl-[1,2,4]-oxadiazol-3- ylalkoxy, tetrazol-1-ylalkyl, tetrazol-1-ylalkoxy, tetrazol-2-ylalkyl, tetrazol-2-ylalkoxy, tetrazol-5-ylalkyl, tetrazol-5-ylalkoxy, 5-methyl-tetrazol-1-ylalkyl, 5-methyl-tetrazol-1-ylalkoxy, thiazol-4-ylalkyl, thiazol-4-ylalkoxy, oxazol-4-ylalkyl, oxazol-4-ylalkoxy, 2oxo -pyrrolidinylalkyl, 2-oxo-pyrrolidinylalkoxy, imidazolylalkyl, imidazolylalkoxy, 2methyl -imidazolylalkyl, 2-methyl-imidazolylalkoxy, N-methylpiperazinoalkyl, N-methylpiperazinoalkoxy, N-methylpiperazinoalkoxyalkyl, dioxolanyl, dioxanyl, dithiolanyl, dithianyl, pyrrolidinyl, piperidinyl, piperazinyl, pyrrolyl, 4-methylpiperazinyl, morpholinyl, thiomorpholinyl, 2-hydroxymethylpyrrolidinyl, 3-hydroxypyrrolidinyl, 3,4-dihydroxypyrrolidinyl, 3-acetamidomethylpyrrolidinyl, 3-C 1-6 -alkoxy-C 1-6 alkyl -pyrrolidinyl, 4-hydroxypiperidinyl, 4-oxopiperidinyl, 3,5-dimethylmorpholinyl, 4,4-dioxothiomorpholinyl, 4-oxothiomorpholinyl, 2,6-dimethylmorpholinyl, 2-oxo -imidazolidinyl, 2-oxooxazolidinyl, 2-oxopyrrolidinyl, 2-oxo[1,3]oxazinyl, 2oxo -tetrahydropyrimidinyl and the —O—CH 2 CH(OH)CH 2 NR x radical where NR x is a mono- or di-C 1-6 -alkylamino, piperidino, morpholino, piperazino or N-methylpiperazino radical;

or a prodrug thereof, or a salt thereof.

7. A pharmaceutical preparation comprising, as an active pharmaceutical ingredient, a compound according to claim 1 or 6 in free form or as a pharmaceutically usable salt.

8. A process for preparing a medicament for the treatment of hypertension, heart failure, glaucoma, myocardial infarction, kidney failure or restenoses, which comprises blending a compound according to claim 1 or 6 with a pharmaceutically inert, inorganic or organic excipient.

9. A process according to claim 8 , characterized in that the preparation is effected additionally with one or more agents having cardiovascular action, for example αand β-blockers such as phentolamine, phenoxybenzamine, prazosin, terazosin, tolazine, atenolol, metoprolol, nadolol, propranolol, timolol, carteolol etc.; vasodilators such as hydralazine, minoxidil, diazoxide, nitroprusside, flosequinan etc.; calcium antagonists such as amrinone, bencyclan, diltiazem, fendiline, flunarizine, nicardipine, nimodipine, perhexilene, verapamil, gallopamil, nifedipine etc.; ACE inhibitors such as cilazapril, captopril, enalapril, lisinopril etc.; potassium activators such as pinacidil; anti-serotoninergics such as ketanserin; thromboxane-synthetase inhibitors; neutral endopeptidase inhibitors (NEP inhibitors); angiotensin II antagonists; and also diuretics such as hydrochlorothiazide, chlorothiazide, acetazolamide, amiloride, bumetanide, benzthiazide, ethacrynic acid, furosemide, indacrinone, metolazone, spironolactone, triamteren, chlorthalidone etc.; sympatholytics such as methyldopa, clonidine, guanabenz, reserpine; and other agents which are suitable for the treatment of hypertension, heart failure or vascular diseases in humans and animals which are associated with diabetes or renal disorders such as acute or chronic renal failure.

10. A method for the treatment of hypertension, heart failure, myocardial infarction, kidney failure or restenoses, characterized in that the human or animal body is treated with an effective amount of a compound according to claim 1 or 6 .