.kappa. Opioid Receptor Selective Affinity Labels: Electrophilic Benzeneacetamides as .kappa.-Selective Opioid Antagonists
作者:An-Chih Chang、Akira E. Takemori、William H. Ojala、William B. Gleason、Philip S. Portoghese
DOI:10.1021/jm00052a008
日期:1994.12
high binding affinity and selectivity of the 3-isothiocyanate 3 (DIPPA) to kappa opioid receptors, wash studies have suggested that this involves covalent binding. In the mouse tail-flick assay, the 3- and 4-substituted isomers (3 and 5, respectively) produced long-lasting antagonism of the antinociceptive effect of the kappa opioid agonist, (+/-)-trans-2-(3,4-dichlorophenyl)-N-methyl-N-[2-(1-pyrrolidinyl)
合成了2-(3,4-二氯苯基)-N-甲基-N- [1-(3-或4-取代的苯基)-2-(1-吡咯烷基)乙基]-乙酰胺3-6作为κ选择性亲和力标记并评估阿片样物质的活性。在平滑肌制剂中,非亲电子母体化合物(+)-S-2和亲和标记3-6表现为kappa激动剂,因为它们被norbinaltorphimine(norBNI)强烈拮抗。除了3-异硫氰酸酯3(DIPPA)对κ阿片受体的高结合亲和力和选择性外,洗涤研究还表明这涉及共价结合。在小鼠甩尾试验中,3-和4-取代的异构体(分别为3和5)对kappa阿片激动剂(+/-)-trans-2-(3 ,4-二氯苯基)-N-甲基-N- [2-(1-吡咯烷基)环己基]乙酰胺((+/-)-U50,488)。相反,在甩尾试验中,非亲电子母体化合物(+)-S-2和富马酸酯衍生物4没有拮抗活性。在小鼠腹部拉伸试验中,DIPPA(3)和4-异硫氰酸酯5的剂量基本不同,也