Abstract: Benzodiazepines of formula ##STR1## in which R.sup.9 is hydrogen or chlorine, R10 is phenyl, possibly substituted, R11 is hydrogen, R12 is oxygen or sulphur, R13 is an NH group, Ar is aromatic or heteroaromatic comprising one or more rings and in which, in particular, A is an ethylene or trimethylene bridge; e is 1 or 2; which are gastrin antagonists and/or central antagonists of cholecystokinin.

Abstract: Compounds of the formula I ##STR1## wherein R.sub.1 represents a hydrogen or fluorine atom, and R.sub.2 represents an alkyl group containing 2 to 6 carbon atoms, or a cycloalkyl or cycloalkyl-alkyl group containing 5 to 8 carbon atoms, each of these groups being substituted by one or two hydroxy groups or an oxo group and, if desired, also by a 4-(m-trifluoromethylphenyl)-piperazino or 4-(3-trifluoromethyl-4-fluoro-phenyl)-piperazino group with the proviso that, when R.sub.1 represents a hydrogen atom, R.sub.2 does not represent a monohydroxyalkyl group, and their pharmaceutically acceptable acid addition salts are novel and have therapeutic use, notably in the region of the central nervous system and in the cardiovascular region.