Send to

Choose Destination
J Med Chem. 2012 Nov 26;55(22):10302-6. doi: 10.1021/jm301258w. Epub 2012 Nov 7.

Discovery and pharmacological evaluation of a diphenethylamine derivative (HS665), a highly potent and selective κ opioid receptor agonist.

Author information

Department of Pharmaceutical Chemistry, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria.


Here we report on the design, synthesis, and biological characterization of novel κ opioid (KOP) receptor ligands of diphenethylamines. In opioid receptor binding and functional assays, the N-cyclobutylmethyl substituted derivative 4 (HS665) showed the highest affinity and selectivity for the KOP receptor and KOP agonist potency. Compound 4 inhibited acetic acid induced writhing after subcutaneous administration in mice via KOP receptor-mediated mechanisms, being equipotent as an analgesic to the KOP agonist U50,488.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center