Portoghese et al (1994) Structure-activity relationship of N17'-substituted
norbinaltorphimine congeners. Role of the N17'-basic group in the interaction
with a putative address subsite on the κ opioid receptor. J.Med.Chem. 37 1495.
Blakeet al (1997) Differential agonist regulation of the human κ-opioid receptor.
J.Neurochem. 68 1846. Fenget al (1997)
Nor-binaltorphimine precipitates withdrawal and excitatory amino acid release
in the locus ceruleus of butorphanol- but not morphine-dependent rats.
J.Pharmacol.Exp.Ther. 283 932.