Polysubstituted-alkyl esters of 4-alkylaminobenzoic acids

A compound of the formula:

• ##STR4## wherein R.sub.4 is an unbranched or branched alkyl group, C.sub.n H.sub.2n+1 wherein n is 8 to 19;
• R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.3 alkyl, and C.sub.1 -C.sub.3 hydroxyalkylene;
• X and Y, which may be the same or different, are selected from the group consisting of hydrogen, hydroxy, lower alkanoyloxy, hydroxymethyl, and when taken together X and Y can comprise a carbon-carbon bond;
• wherein the 4-alkylaminobenzoyloxy moiety and X may be interchanged;
• with the proviso that when R.sub.1, R.sub.2 and R.sub.3 are all hydrogen or C.sub.1 -C.sub.3 alkyl, then X and Y may not both be hydrogen;
• and the pharmaceutically acceptable salts thereof.