Abstract:
:Effective and safe analgesics represent an unmet medical need for the treatment of acute and chronic pain. A series of N-cyclopropylmethyl-7α-phenyl-6,14-endoethanotetrahydronorthebaines were designed, synthesized, and assayed, leading to the discovery of a benzylamine derivative (compound 4, SLL-039) as a highly selective and potent κ opioid agonist (κ, Ki = 0.47 nM, κ/μ = 682, κ/δ = 283), which was confirmed by functional assays in vitro and antinociceptive assays in vivo. The in vivo effect could be blocked by pretreatment with the selective κ antagonist nor-BNI. Moreover, this compound did not induce sedation, a common dose limiting effect of κ opioid receptor agonists, at its analgesic dose compared to U50,488H. The dissociation of sedation/antinociception found in SLL-039 was assumed to be correlated with the occupation of its benzamide motif in a unique subsite involving V1182.63, W124EL1, and E209EL2.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Xiao L,Wang Y,Zhang M,Wu W,Kong L,Ma Y,Xu X,Liu X,He Q,Qian Y,Sun H,Wu H,Lin C,Huang H,Ye R,Jiang S,Ye RF,Yuan C,Fang S,Xue D,Yang X,Chen H,Zheng Y,Yu L,Xie Q,Zheng L,Fu W,Li W,Qiu Z,Liu J,Shaodoi
10.1021/acs.jmedchem.9b00857subject
Has Abstractpub_date
2019-12-26 00:00:00pages
11054-11070issue
24eissn
0022-2623issn
1520-4804journal_volume
62pub_type
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