Heterocyclic substituted sulfonyl ureas, and their use

A sulfonyl urea of the formula ##STR12## or a physiologically acceptable salt thereof, wherein X is alkylene or alkenylene having from 3 to 6 carbon atoms, optionally substituted by up to 3 alkyl groups each having from 1 to 4 carbon atoms, or by phenyl;

• or the group ##STR13## is a bicyclic system of the formula ##STR14## and Y is alkylene having 2 or 3 carbon atoms;
• R.sup.1 is alkyl having from 4 to 6 carbon atoms, cycloalkyl, alkylcycloalkyl, dialkylcycloalkyl, cycloalkylalkyl, cycloalkenyl, or alkylcycloalkenyl in each case having 4 to 9 carbon atoms, or is methylcyclopentylmethyl, cyclohexenylmethyl, chlorocyclohexyl, methoxycyclohexyl, bicycloheptyl, bicycloheptenyl, bicycloheptylmethyl, bicycloheptenylmethyl, bicyclooctyl, nortricyclyl, adamantyl, or benzyl.