Arylsulphonamides pharmaceutical compositions containing these compounds

Arylsulphonamides of formula ##STR11## wherein R.sub.1 is a phenylalkyl, trialklphenyl, tetramethylphenyl or pentamethylphenyl group, a thienyl group optionally substituted by a halogen atom or an alkyl group, or a phenyl group which may be mono-substituted by a nitro group or mono- or disubstituted by a halogen atom or by an alkyl, trifluoromethyl or alkoxy group, the substituents being identical or different,

• R.sub.2, R.sub.4 and R.sub.5, which may be identical or different, are hydrogen or alkyl or
• R.sub.2 is a hydrogen atom or an alkyl group and R.sub.4 and R.sub.5 together represent a carbon-carbon bond,
• R.sub.3 is a 2-, 3- or 4- pyridyl group optionally substituted by an alkyl group,
• R.sub.6 is a hydroxy, alkoxy, amino, alkylamino or dialkylamino group,
• A is a group of formula ##STR12## wherein R.sub.7 and R.sub.8 together are a methylene or ethylene group, and
• B is a carbon-carbon bond or a straight-chained C.sub.1 -C.sub.4 alkylene group optionally substituted by one or two alkyl groups,
• the alkyl and alkoxy moieties may each contain 1 to 3 carbon atoms,
• the enantiomers thereof, the cis and trans isomers thereof, where R.sub.4 and R.sub.5 together represent a carbon-carbon bond, and the pharmaceutically acceptable addition salts thereof.