[DE] 4-BENZIMIDAZOL-2-YL-PYRIDAZIN-3-ON-DERIVATIVE, IHRE HERSTELLUNG UND VERWENDUNG IN ARZNEIMITTELN [EN] 4-BENZIMIDAZOL-2-YL-PYRIDAZINE-3-ONE-DERIVATIVES, PRODUCTION AND USE THEREOF IN MEDICAMENTS [FR] DERIVE DE 4-BENZIMIDAZOL-2-YL-PYRIDAZIN-3-ONE, SA PRODUCTION ET SON UTILISATION DANS DES MEDICAMENTS