Method of treating conditions of delayed hypersensitivity using bis-basic substituted acenaphthene derivatives

A method of treating conditions of delayed hypersensitivity which comprises administering to a patient in need thereof a 3,6-bis-basic ketone of acenaphthene having the formula:

• ##SPC9##
• wherein A is a straight or branched alkylene chain having from 1 to 6 carbon atoms;
• and Y is selected from the group consisting of:
• ##EQU10## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of hydrogen, lower alkyl having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkenyl having from 3 to 6 carbon atoms in which the unsaturation is in a position other than the 1-position of the alkenyl group;
• and the pharmaceutically acceptable salts thereof, in an amount effective to suppress delayed hypersensitivity.