DE4201554A1 - New benzimidazol-1-yl-methyl-bi:phenyl derivs. - Google Patents

Abstract

Benzimidazole derivs. of formula (I) and their salts are new. R1 is 1-3C alkyl, H, F, Cl or Br; R2 is e.g, oxazol-4-yl, thiazol-4-yl (these 2 opt. substd. in position 2- with 1-6C alkyl or Ph), imidazol-4-yl (opt. substd. in position 2- with 1-6C alkyl or Ph or in position 1- with 1-7C alkl (itself opt. substd. in any position with carboxy, alkoxycarbonyl etc., 2-4C alkyl (itself opt. substd. in position 2-, 3- or 4- with OH, alkoxy, alkoxyalkoxy, etc., alkyl (itself opt. substd. with CF3, 3-7C cycloalkyl or Ph (itself opt. mono- or di-substd. with F, Cl, CF3, Me or MeO)), alkyl (itself opt. mono- or di-substd. with Ph or mono substd. with 3-7C cycloalkyl)), where, unless otherwise stated alkyl and alkoxy gps. contain 1-3C; R3 is 2-4C alkyl, 2-3C alkoxy, 2-3C alkylthio, cyclopropyl or cyclobutyl; R4 is eg., a gp. capable of being converted in vivo to carboxy in cpds. (Ia) or carboxy, CN, 1H-tetrazolyl etc..

Description

In EP-A-03 92 317 are already Benzimidazole, which represent valuable angiotensin antagonists described.

It has now been found that the new benzimidazoles of all common formula

their 1, 3-isomer mixtures and their salts, in particular for the pharmaceutical application whose physiologically ver Suitable salts with inorganic or organic acids or bases, even more valuable angiotensin antagonists, in particular angiotensin II antagonists.

In the above general formula I means
R _{1 is} an alkyl group having 1 to 3 carbon atoms, a hydrogen, fluorine, chlorine or bromine atom,
R _{2 is} an oxazol-4-yl or thiazol-4-yl group optionally substituted in the 2-position by an alkyl group having 1 to 6 carbon atoms or by a phenyl group or optionally in the 2-position by an alkyl group having 1 to 6 carbon atoms or imidazol-4-yl group substituted by a phenyl group, in which the imidazol-4-yl group in the 1-position is atomized by an alkyl group with 1 to 7 carbon, which is in 2, 3, 4, 5 , 6- or 7-position may be substituted by a carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, morpholinocarbonyl, thiomorpho linocarbonyl or 1-oxidothiomorpholinocarbonyl group, by an alkyl group having 1 to 4 Koh in the 2-, 3- or 4-position by a hydroxyl, alkoxy or imidazol-1-yl group, by an alkyl group represented by a trifluoromethyl group, by a cycloalkyl group having 3 to 7 carbon atoms or by an optionally by F is substituted by trifluoromethyl, methyl or methoxy mono- or di-substituted phenyl group is substituted by an alkyl group substituted by two phenyl groups or by a cycloalkyl group having 3 to 7 carbon atoms substitui, wherein, unless otherwise stated, the above-mentioned alkyl and alkoxy moieties may each contain 1 to 3 carbon atoms,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an alkoxy or alkylthio group having in each case 2 or 3 carbon atoms in the alkyl moiety, a cyclopropyl or cyclobutyl group and
R _{4 is} a carboxy, cyano, 1H-tetrazolyl or 1-triphenylmethyl-tetrazolyl group or an alkoxycarbonyl group having a total of 2 to 5 carbon atoms.

The novel compounds of the above formula I have valuable properties. Thus, the compounds of formula I in which R _{4 represents} an alkoxycarbonyl group, a carboxy or 1H-tetrazolyl group, in particular valuable pharmacological properties, as these angiotensin Antagoni most, in particular angiotensin II antagonists represent. The remaining compounds of the general formula I are valuable intermediates for the preparation of the abovementioned compound.

The present invention thus provides the new Benzimidazoles mentioned above, wherein the corresponding Alkoxycarbonylverbindungen also valuable Zwi represent products.

Another object of the present invention are thus new drugs, which one of the above-mentioned pharmacolo gically active compounds of general formula I or a corresponding physiologically acceptable salt enthal and in particular for the treatment of hypertension and heart insufficiency, and for the treatment of ischemic peripheral Circulatory disorders, myocardial ischemia (angina), for the prevention of heart failure progression after myocardial Infarction, for the treatment of diabetic nephropathy, Glaucoma, gastrointestinal disorders and bladder illnesses are suitable.

For the meanings mentioned in the definition of the radicals R ₁ to R ₄ above, for example, is
R _{1 is} hydrogen, fluorine or chlorine, that of methyl, ethyl, n-propyl or isopropyl, R _{2 is} oxazol-4-yl, 2-methyl-oxazol-4-yl, 2-Ethyl-oxazol-4-yl, 2-n-propyl-oxazol-4-yl, 2-isopropyl-oxazol-4-yl, 2-n-butyl-oxazol-4-yl, 2-isobutyl -oxazol-4-yl, 2-n-pentyl-oxazol-4-yl, 2-isoamyl-oxazol-4-yl, 2-n-hexyl-oxazol-4-yl, 2-phenyl-oxazole 4-yl, thiazol-4-yl, 2-methyl-thiazol-4-yl, 2-ethyl-thiazol-4-yl, 2-n-propyl-thiazol-4-yl, 2-isopropyl thiazol-4-yl, 2-n-butyl-thiazol-4-yl, 2-isobutyl-thiazol-4-yl, 2-n-pentyl-thiazol-4-yl, 2-iso-amyl-thiazole 4-yl, 2-n-hexyl-thiazol-4-yl, 2-phenyl-thiazol-4-yl, 1-methyl-imidazol-4-yl, 1-ethyl-imidazole-4 yl, 1-n-propyl-imidazol-4-yl, 1-isopropyl-imidazol-4-yl, 1-n-butyl-imidazol-4-yl, 1-isobutyl-imidazol-4-yl , 1-n-Pentylimidazol-4-yl, 1-isoamyl-imidazol-4-yl, 1-n-hexyl-imidazol-4-yl, 1-n-hexyl-2-methyl-imidazole-4 -yl, 1- (1-methyl-n-penyl) -imidazol-4-yl, 1- (1-ethyl-n-butyl) -imidazol-4-yl -, 1- (1-methyl-n-hexyl) -imidazol-4-yl, 1- (1-ethyl-n-pentyl) -imidazol-4-yl, 1- (1-n-propyl-n -butyl) -imidazol-4-yl, 1-n-heptyl-imidazol-4-yl, 1-ethyl-2-methyl-imidazol-4-yl, 1-n-propyl-2-methyl-imidazole 4-yl, 1-isopropyl-2-methylimidazol-4-yl, 1-n-butyl-2-methyl-imidazol-4-yl, 1-isobutyl-2-methyl-imidazole-4 -yl, 1-n-pentyl-2-methyl-imidazol-4-yl, 1-isoamyl-2-methyl-imidazol-4-yl, 1-n-hexyl-2-methyl-imidazole-4 -yl, 1-n-heptyl-2-methyl-imidazol-4-yl, 1-cyclopropylmethyl-imidazol-4-yl, 1-cyclobutylmethyl-imidazol-4-yl, 1-cyclopentylmethyl-imidazole 4-yl, 1-cyclohexylmethyl-imidazol-4-yl, 1-cycloheptylmethyl-imidazol-4-yl, 1- (2-cyclopropyl-ethyl) -imidazol-4-yl, 1- (2-cyclobutyl-ethyl ) imidazol-4-yl, 1- (2-cyclopentylethyl) -imidazol-4-yl, 1- (2-cyclohexylethyl) -imidazol-4-yl, 1- (2-cycloheptylethyl) imidazole 4-yl, 1- (3-cyclopropylpropyl) -imidazol-4-yl, 1- (3-cyclobutylpropyl) -imidazol-4-yl, 1- (3-cyclopentylpropyl) -imidazol-4-yl , 1- (3-Cyclohexylpropyl) -imidazol-4-yl -, 1- (3-Cycloheptylpropyl) imidazol-4-yl, 1- (2,2,2-trifluoroethyl) imidazol-4-yl, 1- (3,3,3-trifluoropropyl) imidazole -4-yl, 1-Benzyl-imidazol-4-yl, 1- (2-phenylethyl) -imidazol-4-yl, 1- (3-phenyl-propyl) -imidazol-4-yl, 1 (4-fluoro-benzyl) -imidazol-4-yl, 1- (4-chloro-benzyl) -imidazol-4-yl, 1- (3-chloro-benzyl) -imidazol-4-yl , 1- (4-trifluoromethyl-benzyl) -imidazol-4-yl, 1- (3-methyl-benzyl) -imidazol-4-yl, 1- (4-methyl-benzyl) -imidazole-4 yl, 1- (3-methoxy-benzyl) -imidazol-4-yl, 1- (4-methoxy-benzyl) -imidazol-4-yl, 1- (3,4-dimethoxy-benzyl) - imida zol-4-yl, 1- (3,5-dimethoxybenzyl) imidazol-4-yl, 1-cyclopropylmethyl-2-methylimidazol-4-yl, 1-cyclobutylmethyl-2-methyl 1-imidazol-4-yl, 1-cyclopentylmethyl-2-methyl-imidazol-4-yl, 1-cyclohexylmethyl-2-methyl-imidazol-4-yl, 1-cycloheptylmethyl-2-methyl-imidazole -4-yl, 1- (2-cyclopropylethyl) -2-methylimidazol-4-yl, 1- (2-cyclobutylethyl) -2-methylimidazol-4-yl, 1- (2- Cyclopentylethyl) -2-methyl-imidazol-4-yl, 1- (2-cyclohexylethyl) - 2-methyl-imidazol-4-yl, 1- (2-cycloheptylethyl) -2-methyl-imidazol-4-yl, 1- (3-cyclopropyl-propyl) -2-methyl-imidazol-4-yl, 1- (3-Cyclobutylpropyl) -2-methylimidazol-4-yl, 1- (3-cyclopentylpropyl) -2-methylimidazol-4-yl, 1- (3-cyclohexylpropyl) -2-methyl -imidazol-4-yl, 1- (3-cycloheptylpropyl) -2-methyl-imidazol-4-yl, 1- (2,2,2-trifluoroethyl) -2-methyl-imidazol-4-yl, 1- (3,3,3-trifluoropropyl) -2-methyl-imidazol-4-yl, 1-benzyl-2-methyl-imidazol-4-yl, 1- (2-phenylethyl) -2-methyl -imidazol-4-yl, 1- (3-phenylpropyl) -2-methyl-imidazol-4-yl, 1- (4-fluoro-benzyl) -2-methyl-imidazol-4-yl, 1 (4-Chloro-benzyl) -2-methyl-imidazol-4-yl, 1- (3-chloro-benzyl) -2-methyl-imidazol-4-yl, 1- (4-trifluoromethylbenzyl) 2-methyl-imidazol-4-yl, 1- (3-methylbenzyl) -2-methyl-imidazol-4-yl, 1- (4-methyl-benzyl) -2-methyl-imidazole 4-yl, 1- (3-methoxybenzyl) -2-methyl-imidazol-4-yl, 1- (4-methoxy-benzyl) -2-methyl-imidazol-4-yl, 1- ( 3,4-dimethoxybenzyl) -2-methylimidazol-4-yl, 1- (3,5-dimethoxybenzyl) -2-methyl 1-imidazol-4-yl, 1-carboxymethyl-imidazol-4-yl, 1- (2-carboxyethyl) -imidazol-4-yl, 1- (3-carboxypropyl) -imidazol-4-yl , 1- (4-Carboxybutyl) imidazol-4-yl, 1- (5-carboxypentyl) imidazol-4-yl, 1- (6-carboxyhexyl) imidazol-4-yl, 1- ( 7-carboxyheptyl) -imidazol-4-yl, 1-methoxycarbonylmethylimidazol-4-yl, 1- (2-methoxycarbonylethyl) -imidazol-4-yl, 1- (3-methoxycarbonylpropyl) -imidazol-4-yl -, 1- (4-Methoxycarbonylbutyl) -imidazol-4-yl, 1- (5-methoxycarbonylpentyl) -imidazol-4-yl, 1- (6-methoxycarbonylhexyl) -imidazol-4-yl, 1 - (7-Methoxycarbonylheptyl) -imidazol-4-yl, 1-ethoxycarbonyl-methyl-imidazol-4-yl, 1- (2-ethoxycarbonyl-ethyl) -imidazol-4-yl, 1- (3-ethoxycarbonyl-propyl) -imidazole 4-yl, 1- (4-ethoxycarbonylbutyl) imidazol-4-yl, 1- (5-ethoxycarbonylpentyl) imidazol-4-yl, 1- (6-ethoxycarbonylhexyl) -imidazol-4-yl -, 1- (7-ethoxycarbonylheptyl) -imidazol-4-yl, 1-n-propoxycarbonylmethyl-imidazol-4-yl, 1- (2-n-propoxycarbonylethyl) -imidazol-4-yl, 1 - (3-n-propoxycarbonylpropyl) -imidazol-4-yl, 1- (4-n-propoxycarbonyl-butyl) -imidazol-4-yl, 1- (5-n-propoxy-carbonylpentyl) -imidazol-4-yl, 1- (6-n-propoxycarbonylhexyl) -imidazol-4-yl -, 1- (7-n-propoxycarbonylheptyl) -imidazol-4-yl, 1-isopropoxycarbonylmethyl-imidazol-4-yl, 1- (2-isopropoxy-carbonyl-ethyl) -imidazol-4-yl, 1- (3 Isopropoxycarbonylpropyl) imidazol-4-yl, 1- (4-isopropoxycarbonylbutyl) imidazol-4-yl, 1- (5-isopropoxycarbonylpentyl) -imidazol-4-yl, 1- (6-isopropoxycarbonylhexyl) - imidazol-4-yl, 1- (7-isopropoxy-carbonylheptyl) -imidazol-4-yl, 1-aminocarbonylmethyl-imidazol-4-yl, 1- (2-aminocarbonylethyl) -imidazol-4-yl, 1 - (3-amino carbonylpropyl) -imidazol-4-yl, 1- (4-aminocarbonylbutyl) -imidazol-4-yl, 1- (5-aminocarbonylpentyl) -imidazol-4-yl, 1- (6 -Aminocarbonylhexyl) -imidazol-4-yl, 1- (7-aminocarbonylheptyl) -imidazol-4-yl, 1-methylaminocarbonylmethyl-imidazol-4-yl, 1- (2-methylaminocarbonylethyl) -imidazole-4 yl, 1- (3-methylaminocarbonylpropyl) -imidazol-4-yl, 1- (4-methylamino-carbonyl-butyl) -imidazol-4-yl, 1- (5-met hylaminocarbonylphenyl) -imidazol-4-yl, 1- (6-methylaminocarbonylhexyl) -imidazol-4-yl, 1- (7-methylaminocarbonylheptyl) -imidazol-4-yl, 1-ethylaminocarbonylmethyl-imidazol-4-yl -, 1- (2-Ethylamino carbonylethyl) -imidazol-4-yl, 1- (3-ethylaminocarbonylpropyl) -imidazol-4-yl, 1- (4-ethylaminocarbonylbutyl) -imidazol-4-yl, 1 - (5-ethylaminocarbonylpentyl) -imidazol-4-yl, 1- (6-ethylaminocarbonylhexyl) -imidazol-4-yl, 1- (7-ethylaminocarbonylheptyl) -imidazol-4-yl, 1-n-propylaminocarbonylme ethyl imidazol-4-yl, 1- (2-n-propylaminocarbonylethyl) -imidazol-4-yl, 1- (3-n-propylaminocarbonylpropyl) -imidazol-4-yl, 1- (4-n -Propylaminocarbonylbutyl) imidazol-4-yl, 1- (5-n-propylaminocarbonylpentyl) -imidazol-4-yl, 1- (6-n-propylamino-carbonylhexyl) imidazol-4-yl, 1- ( 7-n-propylaminocarbonylhephenyl) -imidazol-4-yl, 1-isopropylaminocarbonylmethyl-imidazol-4-yl, 1- (2-isopropylaminocarbonylethyl) -imidazol-4-yl, 1- (3-isopropylaminocarbonylpropyl) -imidazole -4-yl, 1- (4-iso-propylaminocarbonylbutyl) -imide azol-4-yl, 1- (5-isopropylaminocarbonylpentyl) -imidazol-4-yl, 1- (6-isopropylaminocarbonylhexyl) -imidazol-4-yl, 1- (7-isopropylaminocarbonylheptyl) -imidazole-4 -yl, 1-dimethylaminocarbonylmethyl-imidazol-4-yl, 1- (2-dimethylaminocarbonylethyl) -imidazol-4-yl, 1- (3-dimethylaminocarbonylpropyl) -imidazol-4-yl, 1- (4 Dimethylaminocarbonylbutyl) imidazol-4-yl, 1- (5-dimethylaminocarbonylpentyl) imidazol-4-yl, 1- (6-dimethylaminocarbonylhexyl) imidazol-4-yl, 1- (7-dimethylaminocarbonylheptyl ) -imidazole-4-yl, 1-diethylaminocarbonylmethyl-imidazol-4-yl, 1- (2-dimethylaminocarbonylethyl) -imidazol-4-yl, 1- (3-diethylamino-carbonyl-propyl) -imidazol-4-yl -, 1- (4-diethylaminocarbonylbutyl) -imidazol-4-yl, 1- (5-diethylaminocarbonylpentyl) -imidazol-4-yl, 1- (6-diethylaminocarbonylhexyl) -imidazol-4-yl, 1 (7-diethylaminocarbonylheptyl) -imidazol-4-yl, 1-di-n-propylaminocarbonylmethyl-imidazol-4-yl, 1- (2-di-n-propylamino-carbonyl-ethyl) -imidazol-4-yl, 1- (3-Di-n-propylaminocarbonylpropyl) -imide azol-4-yl, 1- (4-di-n-propylaminocarbonylbutyl) imidazol-4-yl, 1- (5-di-n-propylaminocarbonylpentyl) -imidazol-4-yl, 1- (6 Di-n-propylaminocarbonylhexyl) imidazol-4-yl, 1- (7-di-n-propylaminocarbonylheptyl) -imidazol-4-yl, 1-diisopropylaminocarbonylmethyl-imidazol-4-yl, 1- (2- Diisopropylaminocarbonylethyl) -imidazol-4-yl, 1- (3-diisopropylaminocarbonylpropyl) -imidazol-4-yl, 1- (4-diisopropylaminocarbonylbutyl) -imidazol-4-yl, 1- (5-diisopropylaminocarbonylpentyl ) imidazol-4-yl, 1- (6-diisopropylaminocarbonylhexyl) -imidazol-4-yl, 1- (7-diisopropylaminocarbonylheptyl) -imidazol-4-yl, 1-morpholinocarbonylmethyl-imidazol-4-yl , 1- (2-morpholinocarbonylethyl) -imidazol-4-yl, 1- (3-morpholino-carbonyl-propyl) -imidazol-4-yl, 1- (4-morpholinocarbonyl-butyl) -imidazol-4-yl, 1 (5-morpholinocarbonylpentyl) -imidazol-4-yl, 1- (6-morpholinocarbonylhexyl) -imidazol-4-yl, 1- (7-morpholinocarbonylheptyl) -imidazol-4-yl, 1-thiomorpholocarbonylmethyl-imidazole 4-yl, 1- (2-thiomorpholinocarbonyloxy) 1) -imidazol-4-yl, 1- (3-thiomorpholinocarbonylpropyl) imidazol-4-yl, 1- (4-thiomorpholinocarbonylbutyl) -imidazol-4-yl, 1- (5-thiomorpholinocarbonylpentyl) -imidazole 4-yl, 1- (6-thiomorpholinocarbonylhexyl) -imidazol-4-yl, 1- (7-thio-morpholinocarbonylheptyl) -imidazol-4-yl, 1-oxidothiomorpho-linocarbonylmethyl-imidazol-4-yl, 1 (2-Oxidothiomorpholino carbonylethyl) -imidazol-4-yl, 1- (3-oxidothiomorpholinocarbonylpropyl) -imidazol-4-yl, 1- (4-oxidothiomorpholinocarbonylbutyl) -imidazol-4-yl, 1- (5-oxidothiomorpholinocarbonylpentyl ) -imidazol-4-yl, 1- (6-oxidothiomorpholinocarbonylhexyl) imidazol-4-yl, 1- (7-oxidothiomorpholinocarbonylhep tyl) -imidazol-4-yl, 1-carboxymethyl-2-methylimidazole 4-yl, 1- (2-carboxyethyl) -2-methyl-imidazol-4-yl, 1- (3-carboxypropyl) -2-methyl-imidazol-4-yl, 1- (4- Carboxybutyl) -2-methylimidazol-4-yl, 1- (5-carboxypentyl) -2-methylimidazol-4-yl, 1- (6-carboxyhexyl) -2-methylimidazol-4-yl -, 1- (7-Carboxyheptyl) -2-methyl-imidazol-4-yl, 1-Methoxycarbonylmet hyl-2-methylimidazol-4-yl, 1- (2-methoxycarbonylethyl) -2-methylimidazol-4-yl, 1- (3-methoxycarbonylpropyl) -2-methylimidazol-4-yl , 1- (4-Methoxycarbonylbutyl) -2-methyl-imidazol-4-yl, 1- (5-methoxycarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-methoxycarbonylhexyl) -2-methyl -imidazol-4-yl, 1- (7-methoxycarbonylheptyl) -2-methyl-imidazol-4-yl, 1-ethoxycarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-ethoxycarbonyl-ethyl ) -2-methylimidazol-4-yl, 1- (3-ethoxycarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-ethoxycarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-ethoxycarbonylpentyl) -2-methylimidazol-4-yl, 1- (6-ethoxycarbonylhexyl) -2-methylimidazol-4-yl, 1- (7-ethoxycarbonylheptyl) -2-methyl -imidazol-4-yl, 1-n-propoxycarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-n-propoxycarbonylethyl) -2-methyl-imidazol-4-yl, 1- (3 -n-propoxycarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-n-propoxycarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-n-propoxycarbonylpentyl) 2-methyl-imidazol-4-yl, 1- (6-n-propoxycar carbonyl hexyl) -2-methylimidazol-4-yl, 1- (7-n-propoxycarbonylhephenyl) -2-methylimidazol-4-yl, 1-isopropoxycarbonylmethyl-2-methylimidazol-4-yl , 1- (2-isopropoxycarbonylethyl) -2-methylimidazol-4-yl, 1- (3-isopropoxycarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-isopropoxycarbonylbutyl) -2- methylimidazole-4-yl, 1- (5-isopropoxycarbonylpentyl) -2-methylimidazol-4-yl, 1- (6-isopropoxycarbonylhexyl) -2-methylimidazol-4-yl, 1 - (7-isopropoxycarbonylheptyl) -2-methyl-imidazol-4-yl, 1-aminocarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-aminocarbonylethyl) -2-methyl-imidazol-4-yl , 1- (3-amino carbonylpropyl) -2-methylimidazol-4-yl, 1- (4-aminocarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-aminocarbonylpentyl) - 2-methyl-imidazol-4-yl, 1- (6-aminocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-aminocarbonylheptyl) -2-methyl-imidazol-4-yl, 1-methylaminocarbonylmethyl 2-methylimidazole 4-yl, 1- (2-methylaminocarbonylethyl) -2-methylimidazol-4-yl-1- (3-methylaminocarbonylpropyl) -2-methylimidazol-4-y 1-, 1- (4-Methylaminocarbonylbutyl) -2-methyl-imidazol-4-yl, 1- (5-methylaminocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-methylaminocarbonylhexyl) - 2-methyl-imidazol-4-yl, 1- (7-methylaminocarbonylheptyl) -2-methyl-imidazol-4-yl, 1-ethylaminocarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2- Ethylaminocarbonylethyl) -2-methylimidazol-4-yl, 1- (3-ethylaminocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-ethylaminocarbonylbutyl) -2-methylimidazol-4-yl , 1- (5-ethylaminocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-ethylaminocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-ethylaminocarbonylheptyl) -2- methylimidazol-4-yl, 1-n-propylaminocarbonylmethyl-2-methylimidazol-4-yl, 1- (2-n-propylaminocarbonylethyl) -2-methylimidazol-4-yl, 1- ( 3-n-propylaminocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-n-propylaminocarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-n-propylaminocarbonylpentyl) -2 -methyl-imidazol-4-yl, 1- (6-n-propylaminocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-n-propylaminocarbonylheptyl) -2-m ethylimidazol-4-yl, 1-isopropylaminocarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-isopropylaminocarbonylethyl) -2-methyl-imidazol-4-yl, 1- (3-isopropylaminocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-isopropylaminocarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-isopropylaminocarbonylpentyl) -2-methylimidazol-4-yl, 1 (6-isopropylaminocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-isopropylaminocarbonylheptyl) -2-methylimidazol-4-yl, 1-dimethylaminocarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-Dimethylaminocarbonylethyl) -2-methylimidazol-4-yl, 1- (3-dimethylaminocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-dimethylaminocarbonylbutyl) -2-methyl -imidazol-4-yl, 1- (5-dimethylaminocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-dimethylaminocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7 -Dimethylaminocarbonylheptyl) -2-methyl-imidazol-4-yl, 1-diethylaminocarbonylmethyl-2-methyl-imidazol-4-yl, 1- (2-diethylaminocarbonylethyl) -2-methyl-imidazol-4-yl, 1 - (3-Diethylaminocarbonylpropyl) -2-methyl-imidazo 1-4-yl, 1- (4-diethylaminocarbonylbutyl) -2-methyl-imidazol-4-yl, 1- (5-diethylaminocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6- Diethylaminocarbonylhexyl) -2-methylimidazol-4-yl, 1- (7-diethylaminocarbonylheptyl) -2-methylimidazol-4-yl, 1-di-n-propylaminocarbonylmethyl-2-methylimidazol-4-yl , 1- (2-Di-n-propylaminocarbonylethyl) -2-methyl-imidazol-4-yl, 1- (3-di-n-propylaminocarbonylpropyl) -2-methyl-imidazol-4-yl, 1. (4-Di-n-propylaminocarbonylbutyl) -2-methyl-imidazol-4-yl, 1- (5-di-n-propylaminocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-di -n-propylaminocarbonylhexyl) -2-methylimidazol-4-yl, 1- (7-di-n-propylaminocarbonylheptyl) -2-methylimidazol-4-yl, 1-diisopropylaminocarbonylmethyl-2-methylimidazole 4-yl, 1- (2-diisopropylaminocarbonylethyl) -2-methyl-imidazol-4-yl, 1- (3-diisopropylaminocarbonylpropyl) -2-methyl-imidazol-4-yl, 1- (4-diisopropylaminocarbonylbutyl) 2-methylimidazol-4-yl, 1- (5-diisopropylaminocarbonylpentyl) -2-methylimidazol-4-yl, 1- (6-diisopropylaminocarbonylh exyl) -2-methyl-imidazol-4-yl, 1- (7-diisopropylaminocarbonylheptyl) -2-methyl-imidazol-4-yl, 1-morpholinocarbonylmethyl-2-methyl-imidazol-4-yl, 1 (2-morpholinocarbonylethyl) -2-methylimidazol-4-yl, 1- (3-morpholinocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-morpholinocarbonylbutyl) -2-methylimidazole -4-yl, 1- (5-morpholino-carbonyl-pentyl) -2-methyl-imidazol-4-yl, 1- (6-morpholino-carbonyl-hexyl) -2-methyl-imidazol-4-yl, 1- (7 Morpholinocarbonyloheptyl) -2-methylimidazol-4-yl, 1-thiomorpholinocarbonylmethyl-2-methylimidazol-4-yl, 1- (2-thiomorpholinocarbonylethyl) -2-methylimidazol-4-yl , 1- (3-thiomorpholinocarbonylpropyl) -2-methylimidazol-4-yl, 1- (4-thiomorpholinocarbonylbutyl) -2-methylimidazol-4-yl, 1- (5-thiomorpholinocarbonylpentyl) 2-methyl-imidazol-4-yl, 1- (6-thiomorpholinocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-thiomorpholinocarbonylheptyl) -2-methyl-imidazol-4-yl -, 1-Oxidothiomorpholinocarbo nylmethyl-2-methyl-imidazol-4-yl, 1- (2-Oxidothiomorpholino carbonyls ethyl) -2-methyl-imidazol-4-yl, 1- (3-oxidothiomorpholino-carbonyl-propyl) -2-methyl-imidazol-4-yl, 1- (4-oxidothio-morpholinocarbonyl-butyl) -2-methyl-imidazole-4 -yl-, 1- (5-oxidothiomorpholinocarbonylpentyl) -2-methyl-imidazol-4-yl, 1- (6-oxidothiomorpholinocarbonylhexyl) -2-methyl-imidazol-4-yl, 1- (7-oxidothiomorpholinocarbonylheptyl) 2-methyl-1-imidazol-4-yl, 1- (2-hydroxyethyl) -imidazol-4-yl, 1- (3-hydroxypropyl) -imidazol-4-yl, 1- (4- Hydroxybutyl) -imidazol-4-yl, 1- (2-methoxyethyl) -imidazol-4-yl, 1- (3-methoxy-propyl) -imidazol-4-yl, 1- (4-methoxy-butyl) -imidazole -4-yl, 1- (2-ethoxyethyl) -imidazol-4-yl, 1- (3-ethoxypropyl) -imidazol-4-yl, 1- (4-ethoxybutyl) -imidazol-4-yl -, 1- (2-n-propoxyethyl) -imidazol-4-yl, 1- (3-n-propoxypropyl) -imidazol-4-yl, 1- (4-n-propoxybutyl) -imidazole-4 -yl, 1- (2-isopropoxyethyl) imidazol-4-yl, 1- (3-isopropoxypropyl) -imidazol-4-yl, 1- (4-isopropoxybutyl) -imidazol-4-yl, 1- (2-Imidazol-1-yl-ethyl) -imidazol-4-yl, 1- (3-imidazol-1-yl-propyl) -imidazol-4-yl, 1 (4-imidazol-1-yl-butyl) -imidazol-4-yl, 1- (2,2-diphenyl-ethyl) -imidazol-4-yl, 1- (3,3-diphenyl-propyl ) -imidazol-4-yl, 1- (4,4-diphenyl-butyl) -imidazol-4-yl, 1- (2-hydroxyethyl) -2-methyl-imidazol-4-yl, 1- (3 -Hydroxypropyl) -2-methyl-imidazol-4-yl, 1- (4-hydroxybutyl) -2-methyl-imidazol-4-yl, 1- (2-methoxyethyl) -2-methyl-imidazole-4 -yl, 1- (3-methoxypropyl) -2-methylimidazol-4-yl, 1- (4-methoxybutyl) -2-methyl-imidazol-4-yl, 1- (2-ethoxyethyl) -2 -methylimidazol-4-yl, 1- (3-ethoxypropyl) -2-methylimidazol-4-yl, 1- (4-ethoxybutyl) -2-methylimidazol-4-yl, 1- (2-n-propoxyethyl) -2-methylimidazol-4-yl, 1- (3-n-propoxypropyl) -2-methyl-imidazol-4-yl, 1- (4-n-prop oxybutyl) -2-methylimidazol-4-yl, 1- (2-isopropoxyethyl) -2-methylimidazol-4-yl, 1- (3-isopropoxypropyl) -2-methylimidazole-4 yl, 1- (4-isopropoxybutyl) -2-methylimidazol-4-yl, 1- (2-imidazol-1-yl-ethyl) -2-methyl-imidazol-4-yl, 1- ( 3-imidazol-1-yl-propyl) -2-methyl-imidazol-4-yl, 1- (4-imidazol-1-yl-butyl) -2-methyl-imidazol-4-yl , 1- (2,2-diphenyl-ethyl) -2-methyl-imidazol-4-yl, 1- (3,3-diphenyl-propyl) -2-methyl-imidazol-4-yl or 1- (4 , 4-diphenyl-butyl) -2-methyl-imidazol-4-yl group, for R _3, the ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl -, cyclobutyl, ethoxy, n-propoxy, isopropoxy, ethylthio, n-propylthio or Iso propylthiogruppe and
for R ₄ is the carboxy, methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl, isobutoxycarbonyl, tert.-butoxycarbonyl, cyano, 1H-tetra-zol-5-yl or 1-triphenylmethyl tetrazol-5-yl group in costume.

Preferred compounds of the above general formula I are those in which R ₁ to R ₄ are defined as mentioned above and R _{2 is} in the 6-position of the benzimidazole ring, in particular those compounds of the general formula I in which
R _{1 is} a hydrogen or chlorine atom or a methyl group,
R _{2 is} an oxazol-4-yl group which is optionally substituted in the 2-position by a methyl or phenyl group or an imidazol-4-yl group which is optionally substituted in the 2-position by a methyl group and which is substituted in the 1-position by a Alkyl group having 1 to 7 carbon atoms which are in the 2-, 3-, 4-, 5-, 6- or 7-position by a carboxy, methoxycarbonyl, aminocarbonyl, methylaminocarbonyl, ethylaminocarbonyl, n-propylaminocarbonyl-, Dimethylaminocarbonyl, Morpholino carbonyl, Thiomorpholinocarbonyl- or 1-Oxido-thiomorpho linocarbonylgruppe may be substituted by an alkyl group having 1 to 3 carbon atoms in the 2-, 3- or 4-position by a hydroxy, methoxy or imidazole 1-yl group is substituted by a 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, benzyl, 2-phenylethyl, 4-fluorobenzyl, 3-chlorobenzyl, 4-methylbenzyl, 4-trifluoromethylbenzyl, 3, 5-dimethoxybenzyl, o the 2,2-diphenylethyl group is substituted,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an alkoxy or alkylthio group each having 2 or 3 carbon atoms in the alkyl moiety, a cyclopropyl or cyclobutyl group and
R _{4 represents} a carboxy or 1H-tetrazolyl group,
their 1, 3-isomer mixtures and their salts, in particular for the pharmaceutical application of their physiologically tolerable salts with inorganic or organic acids or bases.

Particularly preferred compounds of the above general formula I are those in which
R _{1 is} a methyl group,
R ₂ optionally substituted in the 2-position by a methyl or phenyl nylgruppe substituted oxazol-2-yl group or, where appropriate, in the 2-position substituted by a methyl group imidazol-4-yl group in the 1-position by an alkyl group pe having 1 to 7 carbon atoms, which may be substituted in 2-, 3-, 4-, 5-, 6- or 7-position by a carboxy, methoxycarbonyl, Dime thylaminocarbonyl- or Morpholinocarbonylgruppe, by an alkyl group having 1 to 4 carbon atoms, which is substituted in the 2-, 3- or 4-position by a hydroxy, methoxy or imidazol-1-yl group, by a 2,2,2-trifluoroethyl, 3,3,3- Substituted trifluoropropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, benzyl, 4-fluorobenzyl, 4-methylbenzyl or 4-trifluoromethylbenzyl,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an ethoxy, ethylthio, cyclopropyl or cyclobutyl group and
R _{4 represents} a carboxy or 1H-tetrazolyl group,
in particular those compounds of the above general formula I, in which R ₁ to R _{4 are} as defined above and R _{2 is} in the 6-position,
their 1, 3-isomer mixtures and their salts, in particular for the pharmaceutical application of their physiologically tolerable salts with inorganic or organic acids or bases.

According to the invention, the compounds are obtained according to the following Method:  

a) cyclization of optionally ge in the reaction mixture formed compound of the general formula

in the
R ₁ and R _{2 are} as defined above,
one of the radicals X ₁ or Y _{1 is} a group of the general formula

and the other of X ₁ or Y _{1 is} a group of the general formula

represent, wherein
R ₃ and R _{4 are} as defined above,
R _{5 is} a hydrogen atom or an R ₃ CO group, wherein R ₃ is defined as mentioned above,
Z ₁ and Z ₂ , which may be the same or different, optionally substituted amino groups or hydroxy or mercapto groups optionally substituted by lower alkyl groups or
Z ₁ and Z ₂ together form an oxygen or sulfur atom, an optionally substituted by an alkyl group having 1 to 3 Koh atoms atoms imino group, an alkylenedioxy or alkylene having two or three carbon atoms.

The cyclization is conveniently carried out in a solution tel or solvent mixture such as ethanol, isopropanol, ice vinegar, benzene, chlorobenzene, toluene, xylene, glycol, glycolmo methyl ether, diethylene glycol dimethyl ether, sulfolane, di methylformamide, tetralin or in an excess of the Use of the compound of general formula II verwen Deten acylating agent, z. In the corresponding nitrile, Anhydride, acid halide, ester or amide, for example at temperatures between 0 and 250 ° C, but preferably at the boiling point of the reaction mixture, given if in the presence of a condensing agent such as phosphorus oxychloride, thionyl chloride, sulphuryl chloride, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, hydrochloric acid, Phos phosphoric acid, polyphosphoric acid, acetic anhydride or gege if appropriate also in the presence of a base such as potassium ethylate or potassium tert-butylate. The cyclization can but also without solvents and / or condensing agents be performed.

However, the reaction is carried out particularly advantageously in such a way that a compound of general formula II in the reaction mixture by reduction of a corresponding o-nitro-amino compound optionally in the presence of a carboxylic acid of the general formula R ₃ COOH or by Acy lation of a corresponding o-diamino compound becomes. Upon termination of the reduction of the nitro group on the Hy droxylaminstufe obtained in the subsequent Cyclisie tion, the N-oxide of a compound of general formula I. The resulting N-oxide is then converted by reduction into a corresponding compound of general formula I.

Subsequent reduction of the resulting N-oxide of For mel I is preferably in a solvent such as water, Water / ethanol, methanol, glacial acetic acid, ethyl acetate or Dimethylformamide with hydrogen in the presence of a hydrie tion catalyst such as Raney nickel, platinum or palladium / Coal, with metals such as iron, tin or zinc in the presence  an acid such as acetic acid, hydrochloric acid or sulfuric acid, with Salts such as iron (II) sulfate, tin (II) chloride or Natriumdi thionite, or with hydrazine in the presence of Raney nickel at Temperatures between 0 and 50 ° C, but preferably at Room temperature performed.

b) Reaction of a benzimidazole of the general formula

in the
R ₁ to R _{3 are} as defined above, with a biphenyl compound of the general formula

in the
R _{4 is} as defined above and
Z _{3 is} a nucleophilic leaving group such as a halogen atom, e.g. A chlorine, bromine or iodine atom, or a substituted sulphonyloxy group, e.g. A methanesulphonyloxy, phenylsulphonyloxy or p-toluenesulphonyloxy group.

The reaction is conveniently carried out in a solvent or solvent mixture such as methylene chloride, diethyl ether, Tetrahydrofuran, dioxane, dimethyl sulfoxide, dimethylformamide or benzene, optionally in the presence of an acid-binding By means such as sodium carbonate, potassium carbonate, sodium hydro xid, potassium tert.butylate, sodium hydride, triethylamine or Pyridine, the latter two at the same time as Solvent can be used, preferably at Tem  temperatures between 0 and 100 ° C, z. B. at temperatures between room temperature and 50 ° C, performed.

In the reaction, it is preferable to obtain a mixture of the 1- and 3-isomers, which optionally followed by Crystallization or chromatographic using a Support such as silica gel or alumina, in the correspond de 1 and 3 isomers is separated.

c) For the preparation of a compound of general formula I in which R _{4 represents} a carboxy group:
Transfer of a compound of the general formula

in the
R ₁ to R _{3 are} as defined above and
R ₄ 'represents a group convertible into a carboxy group by hydrolysis, thermolysis or hydrogenolysis.

For example, functional derivatives of Carboxygrup pe such as their unsubstituted or substituted amides, esters, Thiol esters, orthoesters, imino ethers, amidines or anhydrides, the nitrile group or the tetrazolyl group by hydrolysis into a carboxy group, esters with tertiary alcohols, e.g. B. the tert. Butyl ester, by thermolysis in a Carboxygrup pe and esters with aralkanols, eg. B. the benzyl ester, by means Hydrogenolysis be converted into a carboxy group.

The hydrolysis is conveniently carried out either in the presence an acid such as hydrochloric acid, sulfuric acid, phosphoric acid, tri chloroacetic acid or trifluoroacetic acid in the presence of a Base such as sodium hydroxide or potassium hydroxide in a suitable  solvents such as water, water / methanol, ethanol, Water / ethanol, water / isopropanol, water / dioxane, methylene chloride or chloroform at temperatures between -10 ° C and 120 ° C, z. B. at temperatures between room temperature and the Boiling temperature of the reaction mixture, performed. at hydrolysis in the presence of an organic acid such as tri chloroacetic acid or trifluoroacetic acid may optionally existing alcoholic hydroxy groups simultaneously in one corresponding acyloxy group such as the trifluoroacetoxy group be transferred.

If R ₄ 'in a compound of the general formula V is a cyano or aminocarbonyl group, these groups may also be reacted with a nitrite, eg. As sodium nitrite, in the presence of an acid such as sulfuric acid, this is suitably used simultaneously as a solvent, at temperatures between 0 and 50 ° C are converted into the carboxy group.

R ₄ 'in a compound of general formula V, for example, the tert. Butyloxycarbonylgruppe, so the tert. Butyl also thermally optionally in an inert solvent such as methylene chloride, chloroform, benzene, toluene, tetrahydrofuran or dioxane and preferably in Ge presence of a catalytic amount of an acid such as p-toluene sulfonic acid, sulfuric acid, phosphoric acid or polyphosphoric acid, preferably at the boiling point of the solvent used , z. B. at temperatures between 40 ° C and 100 ° C, are split off.

If R ₄ 'in a compound of general formula V, for example, the benzyloxycarbonyl group, the Ben zylgruppe can also hydrogenolytically in the presence of a hydrogenation tion catalyst such as palladium / carbon in a suitable solvent such as methanol, ethanol, ethanol / water, ice acetic, ethyl acetate, dioxane or dimethylformamide preferably at temperatures between 0 and 50 ° C, z. B. at room temperature, and a hydrogen pressure of 1 to 5 bar are split off. In the hydrogenolysis can simultane- ously other radicals, for. A nitro group to the amino group, a benzyloxy group to the hydroxy group, a vinylidene group to the corresponding alkylidene group or a cinnamic acid group to the corresponding phenyl-propionic acid group, mitreduziert or by hydrogen atoms, eg. As a halogen atom by a What hydrogen atom, be replaced.

d) For the preparation of a compound of general formula I in which R _{4 represents} a 1H-tetrazolyl group:
Cleavage of a protecting group from a compound of the general formula

in the
R ₁ , R ₂ and R _{3 are} as defined above and
R ₄ "represents a 1H-tetrazolyl group protected in the 1- or 3-position by a protecting group.

The protective radical is, for example, the triphenylmethyl, Tributyltin or Triphenylzinngruppe into consideration.

The cleavage of a used protective moiety takes place preferably in the presence of a hydrogen halide, preferably in the presence of hydrogen chloride, in the presence of a Base such as sodium hydroxide or alcoholic ammonia in a suitable solvent such as methylene chloride, metha nol, methanol / ammonia, ethanol or isopropanol at Tempe temperatures between 0 and 100 ° C, but preferably in space temperature, or even if the reaction in the presence of alcoholic ammonia is carried out at elevated temperature  temperatures, z. B. at temperatures between 100 and 150 ° C, before preferably at temperatures between 120 and 140 ° C.

e) For the preparation of a compound of general formula I in which R _{4 represents} a 1H-tetrazolyl group:
Reaction of a compound of the general formula

in the
R₁ to R₃ are as defined above, with acid nitrogen or their salts.

The reaction is preferably in a solvent such as Benzene, toluene or dimethylformamide at temperatures between 80 and 150 ° C, preferably at 125 ° C performed. This is conveniently either the nitrogen water substance acid during the reaction of an alkali azide, z. B. from sodium azide, in the presence of a weak acid such as Am released monium chloride or in the reaction mixture at the reaction with a salt of nitric acid, before preferably with aluminum azide or tributyltin azide, which also conveniently in the reaction mixture by order of aluminum chloride or tributyltin chloride with an alkali azide, such as sodium azide, he then holding Tetrazolidsalz by acidification with a diluted acid such as 2N hydrochloric acid or 2N sulfuric acid free set.

In the reactions described above can give If present, reactive groups such as hydroxyl, amino or alkylamino groups during the reaction by conventional  Protecting groups are protected, which after the reaction be split off again.

For example, comes as a protective group for a hydroxy group the trimethylsilyl, acetyl, benzoyl, methyl, ethyl, tert-butyl, benzyl or tetrahydropyranyl group and as Protecting group for an amino, alkylamino or imino group Acetyl, benzoyl, ethoxycarbonyl or benzyl group in Be costume.

The optional subsequent cleavage of a use The protective moiety is preferably carried out hydrolytically in one aqueous solvents, for. In water, isopropanol / water, Tetrahydrofuran / water or dioxane / water, in the presence of egg ner acid such as hydrochloric acid or sulfuric acid or in the presence an alkali base such as sodium hydroxide or potassium hydroxide Temperatures between 0 and 100 ° C, preferably at the you Detemperatur of the reaction mixture. The splitting off of a Benzylrestes is preferably hydrogenolytically, z. With hydrogen in the presence of a catalyst such as Palladium / carbon in a solvent such as methanol, ethanol, Ethyl acetate or glacial acetic acid, if appropriate under Zu Set an acid such as hydrochloric acid at temperatures between 0 and 50 ° C, but preferably at room temperature, and a Hydrogen pressure of 1 to 7 bar, but preferably of 3 up to 5 bar.

A thus obtained isomer mixture of a compound of the general If desired, my formula I can preferably be chromato graphically using a support such as silica gel or Alumina are separated.

Furthermore, the obtained compounds of the general nen formula I in their acid addition salts, in particular for the pharmaceutical application in their physiologically compatible salts with inorganic or organic acids, over be guided. As acids come for example for this Hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid  fumaric acid, succinic acid, lactic acid, citric acid, Tartaric acid or maleic acid into consideration.

In addition, the new compounds thus obtained can be general formula I, if this is a carboxy or 1H-Te trazolyl group, if desired subsequently in their salts with inorganic or organic bases, in particular especially for the pharmaceutical application in their physiolo cially acceptable salts. As bases come here for example, sodium hydroxide, potassium hydroxide, cyclo hexylamine, ethanolamine, diethanolamine and triethanolamine in Consideration.

The compounds used as starting materials of the general Formulas II to VII are partly known from the literature or This is obtained by literature methods.

For example, one obtains a compound of the general Formula II by alkylation of a corresponding o-amino acylamino compound with a compound of the general Formula IV. The required o-amino-acylamino Ver Binding is obtained by reducing a corresponding o-nitro-acylamino compound, which in turn by Nitration of a corresponding acylamino-acetophenone, on closing transfer of the obtained corresponding o-Ni tro-acylamino-acetophenone in the corresponding ω-bromine acetophenone, followed by cyclization of ω-bromo-aceto phenons with a corresponding acid amide and subsequent Reduction of the nitro group is obtained. Before the reduction of Ni trogruppe can be an oxazol-4-yl compound thus obtained with a corresponding amine, preferably with ammonia, under pressure into the corresponding imidazol-4-yl compound be converted or a so obtained in 1-position un substituted imidazol-4-yl compound by alkylation in a corresponding in 1-position alkylated imidazol-4-yl Be transferred connection.  

A starting compound of the general formula III is obtained one by reduction and cyclization of a above be wrote o-nitro-acylamino compound.

A starting compound of the general formulas V, VI and VII is obtained by reacting a compound of the general my formula III with a corresponding compound of general formula IV.

The new compounds of general formula I and their Physiologically acceptable salts have valuable pharmacological gical properties. They make angiotensin antagonists most angiotensin II antagonists.

Due to their pharmacological properties are suitable the new compounds and their physiologically acceptable Salts for the treatment of hypertension and heart failure, also for the treatment of ischemic peripheral blood circulation disorders, myocardial ischemia (angina), for prevention Cardiac insufficiency progression after myocardial infarction Treatment of diabetic nephropathy, glaucoma, of gastrointestinal diseases and bladder disease.

Furthermore, the new compounds and their phy are physiologically acceptable salts for the treatment of pulmonary Diseases, eg. From pulmonary edema and chronic Bronchitis, for the prevention of arterial re-stenosis after Angioplasty, from thickening of the vessel wall to vessel operations, arteriosclerosis and diabetic angio pathy. Due to the influence of acetylcholine and Dopamine release by angiotensin in the brain are suitable the new angiotensin antagonists also central to remedy nervous disorders, z. For example, from 'Alzheimer's depression' disease, Parkinson's syndrome, bulimia, and of disorders of cognitive functions.

The for achieving a corresponding effect on the adult required dosage is expediently at intra  venous administration 0.5 to 100 mg, preferably 1 to 70 mg, and when administered orally, 0.1 to 200 mg, preferably 1 to 100 mg, 1 to 3 times a day. For this purpose, the invention can be according to compounds of general formula I prepared, optionally in combination with other active substances such as for example Antihypertensives, diuretics and / or calcium antago nesting, along with one or more inert usual ones Carriers and / or diluents, for. B. with corn starch ke, lactose, cane sugar, microcrystalline cellulose, Magnesium stearate, polyvinylpyrrolidone, citric acid, wine acid, water, water / ethanol, water / glycerine, water / sor bit, water / polyethylene glycol, propylene glycol, cetyl stearyl alcohol, carboxymethylcellulose or fatty substances like hard fat or their suitable mixtures, in usual galenic preparations such as tablets, drag'es, capsules, Incorporate powders, suspensions or suppositories.

For the above-mentioned combinations thus come as white tere active substances, for example bendroflumethiazide, chlorine thiazide, hydrochlorothiazide, spironolactone, benzthiazide, Cyc lothiazide, ethacrynic acid, furosemide, metoprolol, prazosin, Atenolol, propranolol, (di) hydralazine hydrochloride, Diltia zem, felodipine, nicardipine, nifedipine, nisoldipine and ni consider trendipin. The dose for these active substances this is expediently 1/5 of the usually em lowest recommended dosage up to 1/1 of the normal recommended dosage, so for example 15 to 200 mg Hy drochlorthiazid, 125 to 2000 mg chlorothiazide, 15 to 200 mg Ethacrynic acid, 5 to 80 mg furosemide, 20 to 480 mg propra nolol, 5 to 60 mg felodipine, 5 to 60 mg nifedipine or 5 to 60 mg nitrendipine.

The following examples are intended to explain the invention in more detail:

example 1 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimi dazol-1-yl) -methyl] -biphenyl-2-carboxylic acid a) 3-Methyl-4-butyrylamino-5-nitro-acetophenone

32.6 g (148 mmol) of 3-methyl-4-butyrylamino-acetophenone are added in portions at -15 ° C in 300 ml of fuming nitric acid with stirring and stirred at -15 ° C for a further 30 minutes. The reaction mixture is then poured onto 3 l of ice while stirring, the precipitated crude product is filtered off with suction, washed with 400 ml of water, dried and purified by recrystallization from ethanol / diethyl ether (1: 1). Yield: 23.8 g (61.0% of theory),
R _f value: 0.32 (silica gel, methylene chloride)
R _f value 0.48 (silica gel, methylene chloride / methanol = 50: 1).

b) 3-Methyl-4-butyrylamino-5-nitro (ω) bromoacetophenone

To a solution of 23.8 g (90 mmol) of 3-methyl-4-butyrylamino-5-nitro-acetophenone in 900 ml of dichloromethane at room temperature with stirring, a solution of 16.0 g (200 mmol) of bromine in 140 ml Dioxane is added dropwise so slowly that always takes complete completeness decolorization of the reaction mixture. Subsequently ßend is stirred for a further two hours, then the reaction mixture is concentrated in vacuo to dryness, the residue thus obtained with about 20 ml of dichloromethane / diethyl ether (1: 1) triturated, filtered off with suction and then dried. This gives 23 g (74% of theory) of 3-methyl-4-butyrylamino-5-nitro-ω-bromo-acetophenone, which still contains about 10% starting material. The product is further reacted without further purification.
R _f value: 0.69 (silica gel, methylene chloride / methanol = 50: 1)
R _f value: 0.84 (silica gel, methylene chloride / methanol = 9: 1).

c) 2-Butyrylamino-3-nitro-5- (imidazol-4-yl) -toluene

A solution of 6.8 g (20 mmol) of 3-methyl-4-butyrylamino-5-nitro-ω-bromoacetophenone in 20 ml of formamide is heated at 140 ° C. for 2 hours. The cooled solution is then poured into about 50 ml of 1 N ammonia and stirred for about 15 minutes. The precipitated crude product is filtered off with suction, washed with about 50 ml of water and dried. This gives 4.4 g (75% of theory) of the product, which is reacted further without further purification.
R _f value: 0.29 (silica gel, methylene chloride / methanol = 9: 1)

d) 2-Butyrylamino-3-nitro-5- (1-methyl-imidazol-4-yl) -toluene

To a solution of 2.5 g (8.7 mmol) of 2-butyrylamino-3-nitro-5- (imidazol-4-yl) -toluene and 5.2 g (30 mmol) of potassium carbonate dihydrate in 30 ml of dimethylsulfoxide Dropped 1.3 g (9.5 mmol) of methyl iodide at room temperature and then stirred for 2 hours. The reaction mixture is then stirred into about 150 ml of water and then extracted four times with 25 ml of ethyl acetate. The organic extracts are washed with about 30 ml of water, dried and concentrated. The crude product thus obtained is purified by column chromatography (300 g of silica gel, eluent: methylene chloride / methanol = 30: 1).
Yield: 640 mg (24% of theory),
R _f value: 0.54 (silica gel, methylene chloride / methanol = 9: 1).

e) 2-Butyrylamino-3-amino-5- (1-methyl-imidazol-4-yl) -toluene

640 mg (2.1 mmol) of 2-butyrylamino-3-nitro-5- (1-methylimidazol-4-yl) -toluene are dissolved in 30 ml of methanol after addition of about 200 mg of palladium / carbon (20%). ) hydrogenated at room temperature and a hydrogen pressure of 5 bar. After completion of the hydrogen uptake, the catalyst is filtered off and the filtrate is concentrated. The crude product thus obtained is reacted further without further purification.
Yield: 600 mg (100% of theory),
R _f value: 0.23 (silica gel, methylene chloride / methanol = 9: 1)

f) 2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) benzimid zol

600 mg (2.1 mmol) of 2-butyrylamino-3-amino-5- (1-methyl-imidazol-4-yl) -toluene are refluxed in 10 ml of glacial acetic acid for one hour. Then it is evaporated to dryness in vacuo, the residue is mixed with about 15 ml of water, made alkaline with ammonia and extracted four times with about 10 ml of ethyl acetate. The organic extracts are washed with approx. 15 ml of water, dried and finally concentrated. The crude product thus obtained is reacted further without further purification.
Yield: 420 mg (79% of theory),
R _f value: 0.37 (silica gel, methylene chloride / methanol = 9: 1).

g) 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzyl imidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid tert-butyl ester

To a solution of 200 mg (0.79 mmol) of 2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimidazole and 90 mg (0.8 mmol) of potassium tert. butylate in 5 ml of dimethyl sulfoxide are added 280 mg (0.8 mmol) of 4'-bromomethyl-biphenyl-2-carboxylic acid tert.butyl ester and the mixture stirred for 90 minutes at room temperature, then stirred into about 40 ml of water, Extracted four times with 10 ml of ethyl acetate, then the organic extracts washed with 10 ml of water, dried and concentrated to dryness. The crude product thus obtained was purified by column chromatography (100 g of silica gel, eluent; dichloromethane / methanol = 30: 1).
Yield: 230 mg (56% of theory),
R _f value: 0.61 (silica gel, methylene chloride / methanol = 9: 1).

h) 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benz imidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

A solution of 230 mg (0.44 mmol) of 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] - Biphenyl-2-carboxylic acid tert-butyl ester and 2 ml of trifluoroacetic acid in 10 ml of dichloromethane was stirred at room temperature overnight and then concentrated to dryness. The residue was dissolved in about 5 ml of dilute sodium hydroxide solution, the solution was neutralized with acetic acid, the precipitate was filtered off with suction, washed with water and dried.
Yield: 120 mg (59% of theory),
Melting point: 293-295 ° C
R _f value: 0.39 (silica gel, methylene chloride / methanol = 9: 1).

Example 2 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimide azol-1-yl) -methyl] -2- (1H-tetrazol-5-yl) -biphenyl hydrate a) 4 '- [(2-n-Propyl-4-methyl-6- (1-methylimidazol-4-yl) -benz imidazol-1-yl) methyl] -2-cyano-biphenyl

To a solution of 200 mg (0.79 mmol) of 2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimidazole and 90 mg (0.8 mmol) of potassium tert. butylate in 6 ml of dimethyl sulfoxide are added 218 mg (0.8 mmol) of 4'-bromomethyl-2-cyano-biphenyl and the Ge mixture stirred for 14 hours at room temperature. Then it is stirred into about 40 ml of water, extracted four times with approx. 10 ml of ethyl acetate each time, the organic extracts are washed with approx. 10 ml of water, dried and evaporated to dryness. The crude product thus obtained is purified by column chromatography (100 g of silica gel, eluent: dichloromethane / ethanol = 50: 1).
Yield: 240 mg (67% of theory),
R _f value: 0.38 (silica gel, methylene chloride / ethanol = 19: 1).

b) 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benz imidazol-1-yl-methyl] -2- (1H-tetrazol-5-yl) biphenyl-hydrate

A solution of 222 mg (0.5 mmol) of 4 '- [(2-n-propyl-4-methyl-6- (1-methyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] - 2-cyano biphenyl, 660 mg (10 mmol) of sodium azide and 540 mg (10 mmol) of ammonium chloride in 12 ml of pure dimethylformamide are heated at 140 ° C for 18 hours. The solution is then concentrated almost to dryness and the product by säulenchromato graphy isolated (60 g of silica gel, eluent: dichloromethane with 10% ethanol). The product thus obtained is taken up in about 10 ml of dilute ammonia solution and the solution is then adjusted to pH 6 with acetic acid. It forms a greasy precipitate, which becomes crystalline after addition of a little vinegar ester and several hours of stirring. The crystalline product is filtered off with suction, washed with approx. 5 ml of water and dried.
Yield: 61.0 mg (24.0% of theory),
Melting point: 255-257 ° C.
C₂₉H₂₈N₈ × H₂O (506.62)

Calculated:
C, 68.75, H, 5.97, N, 22.12;
Found:
C 68.90, H 5.97, N 22.03.

R _f value: 0.24 (silica gel, methylene chloride / methanol = 9: 1).

Example 3 4 '- [(2-n-propyl-4-methyl-6- (1-isopropyl-imidazol-4-yl) -benz imidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl-6- (1-isopropyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] -bi-phenyl-2-carboxylic acid tert-butyl ester and trifluoroacetic acid in methylene chloride.
Yield: 84.0% of theory,
Melting point: 285-286 ° C
R _f value: 0.55 (silica gel, methylene chloride / methanol = 9: 1).

Example 4 4 '- [(2-n-propyl-4-methyl-6- (1-n-hexyl-imidazol-4-yl) -benz imidazol-1-yl) -methyl) -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-n-hexyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] -biphe nyl-2-carboxylic acid tert-butyl ester and trifluoroacetic acid in Methylene chloride.  

Example 5 4 '- [(2-n-propyl-4-methyl-6- (1-cyclopentylmethyl-imidazole 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclopentylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 6 4 '- [(2-n-propyl-4-methyl-6- (1-cyclohexylmethyl-imidazol-4-yl) - benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclohexylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 7 4 '- [(2-n-propyl-4-methyl-6- (1-benzyl-imidazol-4-yl) -benzimide azol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-benzyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] -biphe nyl-2-carboxylic acid tert-butyl ester and trifluoroacetic acid in Methylene chloride.  

Example 8 4 '- [(2-n-propyl-4-methyl-6- (1- (4-fluorobenzyl) imidazole-4-yl) - benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1- (4-fluorobenzyl) imidazole-4-yl) -benzoimidazol-1-yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

The following compounds can be obtained analogously to Example 8:
4 '- [(2-n-Propyl-4-methyl-6- (1- (3-chlorobenzyl) -imidazol-4-yl) benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid
4 '- [(2-n-Propyl-4-methyl-6- (1- (3,5-dimethoxybenzyl) -imidazol-4-yl) -benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid
4 '- [(2-n-Propyl-4-methyl-6- (1- (4-methylbenzyl) -imidazol-4-yl) -benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid
4 '- [(2-n-Propyl-4-methyl-6- (1- (4-trifluoromethyl-benzyl) -imidazol-4-yl) -benzimidazol-1-yl) -methyl] -biphenyl-2- carboxylic acid.

Example 9 4 '- [(2-n-propyl-4-methyl-6- (1- (2-phenylethyl) imidazole-4-yl) - benzimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1- (2-phenylethyl) imidazole-4-yl) -benzoimidazol-1yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.  

Example 10 4 '- [(2-n-propyl-4-methyl-6- (1- (2,2,2-trifluoroethyl) -imidazol- 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1- (2,2,2-trifluoroethyl) -imidazol-4-yl) -benzoimidazol-1-yl) - methyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 11 4 '- [(2-n-propyl-4-methyl-6- (1- (3,3,3-trifluoropropyl) -imidazol- 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1- (3,3,3-trifluoropropyl) imidazole-4-yl) -benzoimidazol-l-yl) - methyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 12 4 '- [(2-n-propyl-4-methyl-6- (1-aminocarbonylmethyl-imidazol- 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-aminocarbonylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.  

Example 13 4 '- [(2-n-propyl-4-methyl-6- (1-cyclobutylmethyl-imidazol- 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclobutylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 14 4 '- [(2-n-propyl-4-methyl-6- (1-cyclopropylmethyl-imidazole 4-yl) -benzoimidazol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclopropylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -never ethyl] -biphenyl-2-carboxylic acid tert-butyl ester and trifluoro acetic acid in methylene chloride.

Example 15 4 '- [(2-n-propyl-4-methyl-6- (1-isopropyl-imidazol-4-yl) -benz imidazol-1-yl) methyl] -2- (1H-tetrazol-5-yl) biphenyl

Prepared analogously to Example 2 from 4 '- [(2-n-propyl-4-methyl-6- (1-isopropyl-imidazol-4-yl) -benzimidazol-1-yl) -methyl] -2-cyano-biphenyl and Sodium azide in dimethylformamide.
Yield: 18.0% of theory,
Melting point: amorphous
R _f value: 0.29 (silica gel, methylene chloride / methanol = 9: 1)
C ₃₁ H ₃₂ N ₈ (516.66)
Mass spectrum: m / e = 516.

Example 16 4 '- [(2-n-propyl-4-methyl-6- (1-cyclopropylmethyl-imidazole 4-yl) -benzoimidazol-1-yl) methyl] -2- (1H-tetrazol-5-yl) biphenyl

Prepared analogously to Example 2 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclopropylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -2-cyano-biphenyl and sodium azide in dimethylformamide.

Example 17 4 '- [(2-n-propyl-4-methyl-6- (1-cyclobutylmethyl-imidazol- 4-yl) -benzoimidazol-1-yl) methyl] -2- (1H-tetrazol-5-yl) biphenyl

Prepared analogously to Example 2 from 4 '- [(2-n-propyl-4-methyl) 6- (1-cyclobutylmethyl-imidazol-4-yl) -benzoimidazol-1-yl) -me ethyl] -2-cyano-biphenyl and sodium azide in dimethylformamide.

Example 18 4 '- [(2-n-propyl-4-methyl-6- (2-methyl-oxazol-4-yl) -benzimida zol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (2-methyl-oxazol-4-yl) -benzimidazol-1-yl) -methyl] -biphenyl 2-carboxylic acid tert-butyl ester and trifluoroacetic acid in Me thylenchlorid.

Example 19 4 '- [(2-n-propyl-4-methyl-6- (2-methyl-oxazol-4-yl) -benzimida zol-yl) -methyl] -2- (1H-tetrazol-5-yl) biphenyl

Prepared analogously to Example 2 from 4 '- [(2-n-propyl-4-methyl)  6- (2-methyl-oxazol-4-yl) -benzoimidazol-1-yl) methyl] -2-cyano biphenyl and sodium azide in dimethylformamide.

Example 20 4 '- [(2-n-propyl-4-methyl-6- (2-phenyl-oxazol-4-yl) -benzimida zol-1-yl) -methyl] -biphenyl-2-carboxylic acid

Prepared analogously to Example 1 from 4 '- [(2-n-propyl-4-methyl) 6- (2-phenyl-oxazol-4-yl) -benzimidazol-1-yl) -methyl] -biphenyl 2-carboxylic acid tert-butyl ester and trifluoroacetic acid in Me thylenchlorid.

Example 21 4 '- [(2-n-propyl-4-methyl-6- (2-phenyl-oxazol-4-yl) -benzimida zol-1-yl) methyl) -2- (1H-tetrazol-5-yl) biphenyl

Prepared analogously to Example 2 from 4 '- [(2-n-propyl-4-methyl) 6- (2-phenyl-oxazol-4-yl) -benzoimidazol-1-yl) methyl) -2-cyano biphenyl and sodium azide in dimethylformamide.  

In the following pharmaceutical application examples, the active substance used may be any suitable compound of the formula I, in particular those in which R _{4 represents} a carboxy or 1H-tetrazolyl group:

Example I Ampoules containing 50 mg of active ingredient per 5 ml Active ingredient | 50 mg KH₂PO₄ 2 mg Na₂HPO₄ × 2 H₂O 50 mg NaCl 12 mg Water for injections, ad 5 ml

manufacturing

In a part of water the buffer substances and the isotonane solved. The active ingredient is added and after complete solution with water to the nominal volume refilled.

Example II Ampoules containing 100 mg of active ingredient per 5 ml Active ingredient | 100 mg methylglucamine 35 mg glycofurol 1000 mg Polyethylene glycol-polypropylene glycol block polymer 250 mg Water for injections, ad 5 ml

manufacturing

In a part of the water is dissolved methylglucamine and the Active ingredient with stirring and heating brought into solution. To Add the solvent with water to the nominal volume refilled.

Example III Tablets containing 50 mg of active ingredient Active ingredient | 50.0 mg calcium phosphate 70.0 mg lactose 40.0 mg corn starch 35.0 mg polyvinylpyrrolidone 3.5 mg magnesium stearate  1.5 mg 200.0 mg

manufacturing

The active ingredient, CaHPO ₄ , lactose and corn starch are evenly moistened with an aqueous PVP solution. The mass is passed through a 2-mm sieve, dried in a convection oven at 50 ° C and sieved again.

After admixing the lubricant, the granules are pressed on a tableting machine.

Example IV Dragees containing 50 mg of active ingredient Active ingredient | 50.0 mg lysine 25.0 mg lactose 60.0 mg corn starch 34.0 mg gelatin 10.0 mg magnesium stearate  1.0 mg 180.0 mg

manufacturing

The active ingredient is mixed with the excipients and with an aqueous gelatin solution moistened. After screening and Drying, the granules are mixed with magnesium stearate and pressed into cores.

The cores thus produced are prepared by known methods covered with a cover. The coating suspension or solution Dye can be added.

Example V Dragees containing 100 mg of active ingredient Active ingredient | 100.0 mg lysine 50.0 mg lactose 86.0 mg corn starch 50.0 mg polyvinylpyrrolidone 2.8 mg Microcrystalline cellulose 60.0 mg magnesium stearate  1.2 mg 350.0 mg

manufacturing

The active ingredient is mixed with the excipients and with an aqueous PVP solution moistened. The wet mass is passed through a 1.5 mm sieve and dried at 45 ° C. After drying, sieved again and the magnesium stea advice. This mixture is pressed into cores.

The cores thus produced are prepared by known methods covered with a shell. The coating suspension or solution Dyes can be added.

Example VI Capsules containing 250 mg of active ingredient Active ingredient | 250.0 mg corn starch 68.5 mg magnesium stearate  1.5 mg 320.0 mg

manufacturing

Active ingredient and corn starch are mixed and moistened with water. The moist mass is sieved and dried. The dry granules are sieved and mixed with magnesium stearate. The final mixture is filled into hard gelatine capsules size 1.

Example VII Oral suspension containing 50 mg of active ingredient per 5 ml Active ingredient | 50.0 mg hydroxyethyl 50.0 mg sorbic acid 5.0 mg Sorbitol 70% 600.0 mg glycerin 200 mg Aroma 15.0 mg Water, ad 5.0 ml

manufacturing

Distilled water is heated to 70 ° C. This is where dissolved with stirring hydroxyethyl cellulose. By adding Sorbitol solution and glycerin are cooled to room temperature. At room temperature, sorbic acid, flavor and active ingredient added. To vent the suspension is stirred evacuated. One dose = 50 mg is contained in 5.0 ml.

Example VIII Suppositories containing 100 mg of active ingredient Active ingredient | 100.0 mg Adeps solidus 1600.0 mg 1700 mg

manufacturing

The hard fat is melted. At 40 ° C, the ground Active substance homogeneously dispersed in the melt. It will cooled to 38 ° C and in weakly pre-cooled suppositories poured out.

Claims (14)

1. Benzimidazoles of the general formula in the
R _{1 is} an alkyl group having 1 to 3 carbon atoms, a hydrogen, fluorine, chlorine or bromine atom,
R _{2 is} an oxazol-4-yl or thiazol-4-yl group optionally substituted in the 2-position by an alkyl group having 1 to 6 carbon atoms or by a phenyl group or optionally in the 2-position by an alkyl group having 1 to 6 carbon atoms or imidazol-4-yl group substituted by a phenyl group, in which the imidazol-4-yl group in the 1-position is atomized by an alkyl group with 1 to 7 carbon, which is in 2, 3, 4, 5 , 6- or 7-position may be substituted by a carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, morpholinocarbonyl, thiomorpho linocarbonyl or 1-oxidothiomorpholinocarbonyl group, by an alkyl group having 1 to 4 Koh in the 2-, 3- or 4-position by a hydroxyl, alkoxy or imidazol-1-yl group, by an alkyl group represented by a trifluoromethyl group, by a cycloalkyl group having 3 to 7 carbon atoms or by an optionally by F is substituted by trifluoromethyl, methyl or methoxy mono- or di-substituted phenyl group is substituted by an alkyl group substituted by two phenyl groups or by a cycloalkyl group having 3 to 7 carbon atoms substitui, wherein, unless otherwise stated, the above-mentioned alkyl and alkoxy moieties may each contain 1 to 3 carbon atoms,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an alkoxy or alkylthio group each having 2 or 3 carbon atoms in the alkyl moiety, a cyclopropyl or cyclobutyl group and
R _{4 represents} a carboxy, cyano, 1H-tetrazolyl or 1-triphenylmethyl-tetrazolyl group or an alkoxycarbonyl group having a total of 2 to 5 carbon atoms,
their 1, 3-isomer mixtures and their salts. 2. Benzimidazoles of the general formula I according to claim 1, in which
R _{1 is} a hydrogen or chlorine atom or a methyl group,
R _{2 is} an oxazol-4-yl group which is optionally substituted in the 2-position by a methyl or phenyl group or an imidazol-4-yl group which is optionally substituted in the 2-position by a methyl group and which is substituted in the 1-position by a Alkyl group having 1 to 7 carbon atoms which are in the 2-, 3-, 4-, 5-, 6- or 7-position by a carboxy, methoxycarbonyl, aminocarbonyl, methylaminocarbonyl, ethylaminocarbonyl, n-propylaminocarbonyl-, Dimethylaminocarbonyl, Morpholino carbonyl, Thiomorpholinocarbonyl- or 1-Oxido-thiomorpho linocarbonylgruppe may be substituted by an alkyl group having 1 to 3 carbon atoms in the 2-, 3- or 4-position by a hydroxy, methoxy or imidazole 1-yl group is substituted by a 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, benzyl, 2-phenylethyl, 4-fluorobenzyl, 3-chlorobenzyl, 4-methylbenzyl, 4-trifluoromethylbenzyl, 3,5-dimethoxybenzyl or the like it is substituted by 2, 2-diphenylethyl group,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an alkoxy or alkylthio group each having 2 or 3 carbon atoms in the alkyl moiety, a cyclopropyl or cyclobutyl group and
R _{4 is} a carboxy or 1H-tetrazolyl group, their 1, 3-isomer mixtures and their salts. 3. Benzimidazoles of the general formula I according to claim 1, in which
R _{1 is} a methyl group,
R ₂ optionally substituted in the 2-position by a methyl or phenyl nylgruppe substituted oxazol-2-yl group or, where appropriate, in the 2-position substituted by a methyl group imidazol-4-yl group in the 1-position by an alkyl group pe having 1 to 7 carbon atoms, which may be substituted in 2-, 3-, 4-, 5-, 6- or 7-position by a carboxy, methoxycarbonyl, Dime thylaminocarbonyl- or Morpholinocarbonylgruppe, by an alkyl group having 1 to 4 carbon atoms, which is substituted in the 2-, 3- or 4-position by a hydroxy, methoxy or imidazol-1-yl group, by a 2,2,2-trifluoroethyl, 3,3,3- Substituted trifluoropropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, benzyl, 4-fluorobenzyl, 4-methylbenzyl or 4-trifluoromethylbenzyl,
R _{3 is} an alkyl group having 2 to 4 carbon atoms, an ethoxy, ethylthio, cyclopropyl or cyclobutyl group and
R _{4 is} a carboxy or 1H-tetrazolyl group, their 1, 3-isomer mixtures and their salts. 4. Benzimidazoles of the general formula I according to claim 1, in which
R ₁ to R _{4 are} as defined in claim 3 and R _{2 is} in the 6-position,
their 1, 3-isomer mixtures and their salts. 5. Physiologically acceptable salts of the compounds according to at least one of claims 1 to 4 with inorganic or organic acids or bases. 6. A pharmaceutical composition containing a compound after at least one of claims 1 to 4 or a physiologically acceptable Lich salt according to claim 5 besides optionally one or several inert carriers and / or diluents. 7. Use of a compound according to at least one of Claims 1 to 5 for the manufacture of a medicament with An giotensin-antagonistic action. 8. A process for the preparation of a medicament according to An claim 7, characterized in that non-chemical Ways a connection according to at least one of claims 1 to 5 in one or more inert carriers and / or Ver is incorporated. 9. A process for the preparation of the benzimidazoles according to the entitlements 1 to 5, characterized in that

• a) an optionally formed in the reaction mixture connec tion of the general formula in the

R ₁ and R _{2 are} as defined in claims 1 to 4, one of the radicals X ₁ or Y _{1 is} a group of the general formula and the other of X ₁ or Y _{1 is} a group of the general formula R ₃ and R _{4 are} as defined in claims 1 to 4, R _{5 is} a hydrogen atom or an R ₃ CO group, wherein R ₃ is defined as mentioned above,
Z ₁ and Z ₂ , which may be the same or different, optionally substituted amino groups or hydroxy or mercapto groups optionally substituted by lower alkyl groups or
Z ₁ and Z ₂ together denote an oxygen or sulfur atom, an imino group optionally substituted by an alkyl group having 1 to 3 carbon atoms, an alkylenedioxy or alkylenedithio group having in each case 2 or 3 carbon atoms, cyclization and an optionally so-conserved N- Oxide is reduced or

• b) a benzimidazole of the general formula in the

R ₁ to R _{3 are} as defined in claims 1 to 4, with a biphenyl compound of the general formula in the
R _{4 is} as defined in claims 1 to 4 and
Z _{3 represents} a nucleophilic leaving group, is reacted or

• c) for the preparation of a compound of the general formula I in which R _{4 represents} a carboxy group, a compound of the general formula in the

R ₁ to R _{3 are} as defined in claims 1 to 4 and
R ₄ 'represents a group convertible by hydrolysis, thermolysis or hydrogenolysis into a carboxy group, is converted into a corresponding carboxy compound or

• d) for the preparation of a compound of the general formula I in which R _{4 is} a 1H-tetrazolyl group, a protective residue of a compound of the general formula in the

R ₁ , R ₂ and R _{3 are} as defined in claims 1 to 4 and
R ₄ "represents a 1H-tetrazolyl group protected in the 1- or 3-position by a protecting group, is cleaved off or

• e) for the preparation of a compound of the general formula I in which R _{4 is} a 1H-tetrazolyl group, a connec tion of the general formula in the

R ₁ to R _{3 are} as defined in claims 1 to 4, is reacted with hydrazoic acid or its salts, and
if necessary, a protective moiety used during reactions a) to e) to protect reactive groups will be cleaved and / or
If desired, then a thus obtained 1-, 3-Isome rengemisch a compound of general formula I is separated by isomer separation in its 1- and 3-isomer or a compound of general formula I thus obtained in its salt, especially for the pharmaceutical application in her physiologically acceptable salt with an inorganic or organic acid or base is converted.