Two focused libraries of delta opioid ligands were synthesised using AlCl3
facilitated aminolysis. Several compounds were identified with DOR binding
affinities higher or similar to SNC-IO. A novel acyclic derivative of SNC-8
0 produced antinociception in the acetic acid abdominal constriction test,
which is at least partially mediated via the delta-opioid receptor. (C) 199
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