Probes for Narcotic Receptor-Mediated Phenomena. 27. Synthesis and Pharmacological Evaluation of Selective δ-Opioid Receptor Agonists from 4-[(α<i>R</i>)-α-(2<i>S</i>,5<i>R</i>)-4-Substituted-2,5-dimethyl-1-piperazinyl-3-methoxybenzyl]- <i>N</i>,<i>N</i>-diethylbenzamides and Their Enantiomers
作者:M. Scott Furness、Xiaoyan Zhang、Andrew Coop、Arthur E. Jacobson、Richard B. Rothman、Christina M. Dersch、Heng Xu、Frank Porreca、Kenner C. Rice
DOI:10.1021/jm0001222
日期:2000.8.1
Potent, selective, and efficacious delta-opioid receptor agonists such as (+)-4-[(alpha R)-alpha-(2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl-3-methoxybenzyl]-N,N-diethylbenzamide [SNC80, (+)-2] have been found to be useful tools for exploring the structural requirements which are necessary for ligands which interact with the delta-receptor. To determine the necessity for the 4-allyl moiety in (+)-2, this substituent was replaced with a variety of 4-alkyl, 4-arylalkyl, and 4-alkenyl substituents. The corresponding enantiomers of these compounds were also synthesized. The binding affinities for the mu-, delta-, and kappa-opioid receptors and efficacies in the functional GTP gamma S binding assay were determined for the (+)-2 related compounds and their enantiomers. The 4-crotyl analogue was found to have similar delta-receptor affinity and efficacy as (+)-2, but the 4-cyclopropylmethyl analogue, in the functional assay, appeared to be a partial agonist with little antagonist activity.