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