Abstract: Compounds of formula I ##STR1## are described in which R is an aryl, substituted aryl, aralkyl or heterocyclic radical; R.sup.1 is hydrogen or alkyl of 1-4 carbon atoms; A is a saturated, aliphatic hydrocarbon chain, which is linear or branched; R.sup.2 and R.sup.3 are the same or different and are hydrogen, linear or branched alkyl, aryl, substituted aryl or together with the nitrogen atom to which they are connected and together with y form a ring wherein y is a methylene group or a heteroatom, which is selected from the group consisting of nitrogen, oxygen and sulfur; R.sup.4 is hydrogen or linear or branched alkyl; X is halogen or an organic or inorganic anion; n is 0; 1; 2; 3 or in the case of a bifunctional acid, n is equal to 0.5; 1.5; 2.5 and their enantiomers and diestereoisomers. Several methods of preparation of the novel compounds are described.

Abstract: The present invention concerns compounds of the general formula ##STR1## wherein X represents a direct linkage or a linear or branched oxyalkyl group containing one or more carbon atoms, as well as pharmaceutically acceptable salts of such compounds wherein X represents an oxyalkyl group, methods for their preparation by reaction of either piperazine or of its 1,4-bis-hydroxyalkyl derivatives with activated derivatives of acetylsalicylic acid such as halogenides, symmetric or mixed anhydrides, or with a haloalkylester of acetylsalicylic acid, and related pharmaceutical compositions having use as antipyretic, analgesic, anti-inflammatory and anti-histaminic agents.