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Design and Synthesis of Pyrazolomorphinan Derivatives as Novel Delta Opioid Receptor Agonists
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DOI：10.1021/acs.jmedchem.5c02499.png)
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Abstract
En 中文
We designed pyrazolomorphinan derivatives 3 as novel delta opioid receptor (DOR) selective agonists with an unprecedented chemotype according to the drug design concept for the DOR selective agonist KNT-127 which encompassed the message-address concept, the accessory site concept, and the conversion of an indole ring into a quinoline ring. The designed compounds 3 as well as their regioisomers 9 showed potent DOR agonistic activities with low or almost no activities for the mu (MOR) and kappa opioid receptors (KOR). Among the tested compounds, SYK-1106 (9j) bearing a cyclohexyl substituent was the most potent and efficacious DOR agonist (DOR: EC50 = 0.089 nM, E max = 111%; agonistic activities for the MOR and KOR were not determined). SYK-1106 showed dose-dependent and DOR antagonist NTI reversible antidepressant-like effects at 0.3 mg/kg, s.c. in the mouse forced-swimming tests without an effect on locomotor activity and with no convulsive effects.
Keywords:
MESSAGE-ADDRESS CONCEPT
ANTIDEPRESSANT-LIKE
POTENT
LIGANDS
DISCOVERY
KNT-127
AZD2327
ACID
PAIN
MICE
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