NEW N-ACYLATED 4-HYDROXYPHENYLAMINE DERIVATIVES WITH ANALGESIC PROPERTIES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The presentinvention relates to aseries of new N-acylated4-hydroxyphenylaminederivatives, linked viaan alkylene bridge tothe nitrogen atom of al,2-benzisothiazol-3(2H)-one1,1-dioxide group, of formula(I), in which n is a numberfrom I to 5, and to processesfor preparing these derivativesand to pharmaceuticalcompositions containing said derivatives; these compounds possess highanalgesic activity free from antipyretic activity, and they displaylittle hepatotoxic effect.