The invention discloses compounds of the formula ##STR1## wherein, Het.sub.1 is chosen from the group consisting of substituted or unsubstituted furyl, oxazolyl, isoxazolyl, oxadiazolyl, tetrazolyl, thiadiazolylY is an alkylene bridge of 3 to 9 carbon atoms.Het.sub.2 is quinolyl quinolyl substituted by R.sub.1 and R.sub.2 ;R.sub.1 and R.sub.2 are each individually chosen from hydrogen, halo, alkyl, alkenyl, amino, alkylthio, hydroxy, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkylsulfinyl alkyl, alkylsulfonylalkyl, alkoxy, nitro, carboxy, alkoxycarbonyl, dialkylaminoalkyl, alkylaminoalkyl, aminoalkyl, difluoromethyl, trifluoromethyl or cyano;R.sub.3 is alkyltetrazolyl, or substituted or unsubstituted heterocyclyl chosen from benzoxazolyl, benzathiazolyl, thiadiazolyl, imidazolyl, dihydroimidazolyl, oxazolyl, thiazolyl, oxadiazolyl, pyrazolyl, isoxazolyl, isothiazolyl, furyl, triazolyl, tetrazolyl, thiophenyl the N-oxide thereof or a pharmaceutically acceptable acid addition salt thereof are effective antipicornaviral agents.