Antiatherosclerotic 1-piperazinecarbonyl compounds

A compound selected from those of the formula ##STR3## wherein A is selected from the group consisting of 2-pyrazinyl, 2-quinoxalinyl;

• B is selected from the group consisting of phenyl, mono- and polysubstituted phenyl (wherein the substituents may be fluoro, alkyl (C.sub.1 -C.sub.4), or trifluoromethyl), benzyl, mono- and disubstituted benzyl (wherein the substituents may be chloro, nitro or alkyl (C.sub.1 -C.sub.3) alkyl (C.sub.1 -C.sub.4), cycloalkyl (C.sub.3 -C.sub.6), pyridyl, 2-phenoxypropionyl, (alkyl (C.sub.1 -C.sub.4)amino,) polyfluoro(F.sub.7 -F.sub.14)-alkyl(C.sub.3 -C.sub.7), mono- and disubstituted phenylamino (wherein the substituents may be chloro, carboxylic acid or ethyl carboxylate), 6-p-chlorophenylhexyl, 5-(p-chlorobenzoyl)butyl, 2-p-chlorophenoxy-2-isopropyl and 1-methylbenzyl;
• and R is selected from the group comprising hydrogen and alkyl (C.sub.1 -C.sub.3).