Synthetic Studies of Neoclerodane Diterpenes from Salvia divinorum: Identification of a Potent and Centrally Acting μ Opioid Analgesic with Reduced Abuse Liability.

Synthetic Studies of Neoclerodane Diterpenes from Salvia divinorum: Identification of a Potent and Centrally Acting μ Opioid Analgesic with Reduced Abuse Liability.
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DOI:
10.1021/acs.jmedchem.6b01235
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发表时间:
2016-12-22
影响因子:
7.3
通讯作者:
Prisinzano, Thomas E.
Prisinzano, Thomas E.
中科院分区:
医学1区
文献类型:
--
作者:
Crowley, Rachel Saylor;Riley, Andrew P.;Sherwood, Alexander M.;Groer, Chad E.;Shivaperumal, Nirajmohan;Biscaia, Miguel;Paton, Kelly;Schneider, Sebastian;Provasi, Davide;Kivell, Bronwyn M.;Filizola, Marta;Prisinzano, Thomas E.

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Opioids are widely used to treat millions suffering from pain, but their analgesic utility is limited due to associated side effects. Herein we report the development and evaluation of a chemical probe exhibiting analgesia and reduced opioid-induced side effects. This compound, kurkinorin (5), is a potent and selective µ-opioid receptor (MOR) agonist (EC50 = 1.2 nM, >8,000 µ/κ selectivity). 5 is a biased activator of MOR-induced G-protein signaling over β-arrestin-2 recruitment. Metadynamics simulations of 5’s binding to a MOR crystal structure suggest energetically preferred binding modes that differ from crystallographic ligands. In vivo studies with 5 demonstrate centrally-mediated antinociception, significantly reduced rewarding effects, tolerance, and sedation. We propose that this novel MOR agonist may represent a valuable tool in distinguishing the pathways involved in MOR-induced analgesia from its side effects.
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