1-benzenesulfonyl-1,3-dihydroindol-2-one derivatives, their preparation and pharmaceutical compositions in which they are present

A compound of the formula:

• ##STR158## in which R.sub.1 and R.sub.2 are each independently a hydrogen, a hydroxy, a C.sub.1 -C.sub.4 -.omega.-halogenoalkoxy, a halogen, a C.sub.1 -C.sub.4 -alkyl, a trifluoromethyl, a C.sub.1 -C.sub.7 -alkoxy, a C.sub.1 -C.sub.4 -polyhalogenoalkoxy, a C.sub.2 -C.sub.4 -.omega.-hydroxyalkoxy, an .omega.-methoxyalkoxy in which the alkyl is C.sub.2 -C.sub.4, a C.sub.2 -C.sub.4 -.omega.-aminoalkoxy which is free or substituted by one or two C.sub.1 -C.sub.4 -alkyls, a C.sub.3 -C.sub.7 -cycloalkoxy, a cycloalkylmethoxy in which the cycloalkyl is C.sub.3 -C.sub.7, a phenoxy, a benzyloxy, a C.sub.1 -C.sub.4 -alkylthio, a phenylthio, a nitro, an amino which is free or substituted by one or two C.sub.1 -C.sub.4 -alkyls, a cyano, a C.sub.1 -C.sub.4 -acyl, a C.sub.1 -C.sub.4 -acyloxy, a C.sub.1 -C.sub.4 -alkylsulfonamido, a phenylsulfonamido, a C.sub.1 -C.sub.4 -alkylamido, a C.sub.1 -C.sub.4 -alkoxycarbonylamino or a ureido which is unsubstituted or substituted by a phenol or by one or two C.sub.1 -C.sub.4 -alkyls;
• and
• R.sub.3 and R.sub.4 together form a group --(CH.sub.2).sub.p X(CH.sub.2).sub.q -- in which p and q are integers whose sum can vary from 3 to 6 and X is oxygen or sulfur.