Compounds of the formulas: ##STR1## wherein Het is an oxazole or oxazine moiety; X is O, S or SO, n is an integer from 3 to 9, Y is an aliphatic bridge; and the various R groups represent hydrogen or various substituents as described herein, are useful as antiviral agents, especially against picornaviruses. N-(Chloroalkyl)amide intermediates for the compounds of Formula I are also active as antiviral agents. Related compounds outside the scope of the above formulas are also disclosed.
A compound represented by the following formula ##STR1## wherein R represents a lower alkyl group having 2 to 6 carbon atoms, and n is an integer of from 1 to 5.
Compounds represented by the following formula
wherein R represents an alkyl group having 2 to 6 carbon atoms and n is an integer of from 1 to 5 have antihypertensive, vasodilating, β-blocking and blood flow increasing activities and are useful as pharmaceuticals.