Abstract: Compounds of the formula: ##STR1## in which R.sub.1 represents a hydrogen or halogen atom or a methyl or C.sub.1 -C.sub.4 alkoxy group, R'.sub.1 represents a hydrogen or halogen atom, R".sub.1 represents a hydrogen atom or a methoxy group, R.sub.3 represents a C.sub.1 -C.sub.3 alkyl group, R.sub.4 represents a 2,3-dihydro-1H-inden-2-yl, 2,3-dihydro-1H-inden-1-yl or 1,2,3,4-tetrahydronaphthalen-1-yl group, or R.sub.3 and R.sub.4 together form, with the adjacent nitrogen atom, a 1,2,3,4-tetrahydroisoquinol-2-yl, 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinol-2-yl, 5,8-dimethoxy-1,2,3,4-tetrahydroisoquinol-2-yl, 1,2,3,4-tetrahydro-9H-pyrido[3,4-b]indol-2-yl, 1,2,3,4-tetrahydro-9H-pyrido[4,3-b]indol-3-yl, 4,5,6,7-tetrahydrothieno[2,3-c]pyrid-6-yl, 2,3-dihydro-1H-isoindol-2-yl or 2,3,4,5-tetra-hydro-1H-3-benzazepin-3-yl, group are useful in the treatment of cerebral disorders.

Abstract: A compound, in the form of a pure diastereoisomer or mixture thereof, which is a benzothiazepin-4-one derivative of formula (I): ##STR1## in which: R1 is hydrogen or a C.sub.2 -C.sub.4 alkanoyl group;R2 and R3 independently each is hydrogen, a linear or branched C.sub.1 -C.sub.4 alkyl group, a C.sub.3 -C.sub.5 cycloalkyl group, a phenyl group, a benzyl group or a phenethyl group, or R2 and R3 together form, with the nitrogen atom to which they are attached, a pyrrolidinyl, 2,2-dimethylpyrrolidinyl, piperidyl, 4-phenylpiperidyl, 4-(3-methoxyphenyl)piperidyl, 4-(4-fluorobenzoyl)piperidyl, 1,2,3,6-tetrahydropyridyl, perhydroazepinyl, perhydroazocinyl, 1,3-thiazolidinyl, thiomorpholinyl, morpholinyl, 2,3-dihydroindolyl, 1,2,3,4-tetrahydroisoquinolyl, 6-methoxy-1,2,3,4-tetrahydroisoquinolyl, 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolyl or 2,3,4,5-tetrahydro-1H-benz[b]azepinyl group; andX is hydrogen or chlorine;or a pharmacologically acceptable acid addition salt thereof.