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