A method of inhibiting the transport of a neurotransmitter away from a synapse comprising contacting said synapse with {HEAD ~ a compound} selected from {TAIL ~ the group} consisting of compounds having the structure: ##STR7## wherein 
selected from
A method of inhibiting the transport of a neurotransmitter away from a synapse comprising contacting said synapse with { HEAD ~ a compound } selected from { TAIL ~ the group } consisting of compounds having the structure : # # STR7 # # wherein
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH