Abstract
A series of 14β-acyl substituted 17-cyclopropylmethyl-7,8-dihydronoroxymorphinone compounds has been synthesized and evaluated for affinity and efficacy for mu (MOP), kappa (KOP), and delta (DOP) opioid receptors and nociceptin/orphanin FQ peptide (NOP) receptors. The majority of the new ligands displayed high binding affinities for the three opioid receptors, and moderate affinity for NOP receptors. The affinities for NOP receptors are of particular interest as most classical opioid ligands do not bind to NOP receptors. The predominant activity in the [35S]GTPγS assay was partial agonism at each receptor. The results are consistent with our prediction that an appropriate 14β side chain would access a binding site within the NOP receptor and result in substantially higher affinity than displayed by the parent compound naltrexone. Molecular modeling studies, utilizing the recently reported structure of the NOP receptor, are also consistent with this interpretation.
Original language | English |
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Article number | 430 |
Pages (from-to) | 1-10 |
Number of pages | 10 |
Journal | Frontiers in Psychiatry |
Volume | 9 |
Issue number | SEP |
DOIs | |
Publication status | Published - 19 Sept 2018 |
Funding
This work was funded by the National Institutes of Health National Institute on Drug Abuse grants DA20469 and DA07315 (SH) and DA023281 (LT). MT was supported by the Wellcome Trust (Programme Grant 082837 to BVL Potter, University of Bath).
Keywords
- Analgesics
- Kappa opioid receptor
- Mu opioid receptors
- Nociceptin
- Opioid
- ORL-1
ASJC Scopus subject areas
- Psychiatry and Mental health
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Stephen Husbands
- Department of Life Sciences - Professor
- Centre for Therapeutic Innovation
- Addiction and Mental Health Group (AIM)
- Institute of Sustainability and Climate Change
Person: Research & Teaching, Affiliate staff