Patent ID: 8168665

Claim:
A compound of the formula I, in which X is chosen from ═C(—R1)-; R is chosen from halogen, (C 1 -C 6 )-alkyl which can be substituted by one or more fluorine atoms, (C 1 -C 3 )-alkoxy-(C 1 -C 3 )-alkyl, hydroxy, (C 1 -C 6 )-alkoxy which can be substituted by one or more fluorine atoms, (C 1 -C 6 )-alkylmercapto, amino, (C 1 -C 6 )-alkylamino, di-((C 1 -C 6 )-alkyl)amino, mono-(C 1 -C 6 )-alkylaminocarbonyl, di-((C 1 -C 6 )-alkyl)aminocarbonyl, (C 1 -C 6 )-alkoxycarbonyl, cyano, (C 1 -C 6 )-alkylsulfinyl, (C 1 -C 6 )-alkylsulfonyl, aminosulfonyl, nitro and pentafluorosulfanyl, where all groups R are independent of each other and can be identical or different; R1 is chosen from hydrogen and (C 1 -C 6 )-alkyl, where all groups R1 are independent of each other and can be identical or different; R2 and R3 are independently of each other chosen from hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 6 )-alkylcarbonyl-hydrazinocarbonyl and C(═NR4)-NHR5, provided that R2 and R3 are not both chosen from hydrogen and (C 1 -C 6 )-alkyl; R4 is chosen from (C 1 -C 6 )-alkyl, (C 1 -C 6 )-alkylcarbonyl, (C 1 -C 6 )-alkoxycarbonyl, (C 1 -C 6 )-alkoxycarbonyl-oxy, (C 1 -C 18 )-alkylcarbonyloxy-(C 1 -C 6 )-alkoxycarbonyl, (C 6 -C 14 )-arylcarbonyl, (C 6 -C 14 )-aryloxycarbonyl, hydroxy, (C 1 -C 6 )-alkylcarbonyl-oxy, (C 6 -C 14 )-aryl-(C 1 -C 6 )-alkoxycarbonyl, (C 1 -C 6 )-alkylaminocarbonyl-oxy, di-((C 1 -C 6 )-alkyl)aminocarbonyl-oxy, (C 1 -C 6 )-alkylaminocarbonyl and di-((C 1 -C 6 )-alkyl)aminocarbonyl, wherein all aryl groups can be substituted by one or more identical or different substituents chosen from halogen, (C 1 -C 6 )-alkyl, (C 1 -C 6 )-alkoxy and trifluoromethyl; R5 is chosen from hydrogen, cyano, hydroxy, (C 1 -C 6 )-alkoxy and (C 6 -C 14 )-aryl-(C 1 -C 6 )-alkoxy; or R4 and R5 form, together with the —N═C—NH— group which carries them, a 4-membered to 7-membered, partially unsaturated heterocyclic ring which can be substituted by one or more identical or different substituents R1 and which, in addition to the nitrogen atoms being part of the —N═C—NH— group, contains one or two further ring members chosen from ═N—, —NR1—, —C(═O)—, —O—, —S—, —SO— and —SO 2 — which can be identical or different, with the proviso that two ring members from the series —O—, —S—, —SO—, —SO 2 — cannot be present in adjacent ring positions; n is chosen from 0, 1, 2, 3, 4 and 5; provided that R4 is not (C 1 -C 6 )-alkyl if R5 is hydrogen, and provided that 2-(2-chloro-5-nitro-phenyl)-N-hydroxy-1H-benzoimidazole-5-carboxamidine and 2-(2-chloro-5-nitro-phenyl)-5-[1,2,4]oxadiazol-3-yl-1H-benzoimidazole are excluded; or a physiologically acceptable salt thereof.