Highly selective .kappa. opioid analgesics. 4. Synthesis of some conformationally restricted naphthalene derivatives with high receptor affinity and selectivity
作者:Paul R. Halfpenny、David C. Horwell、John Hughes、Christine Humblet、John C. Hunter、David C. Rees、David Neuhaus
DOI:10.1021/jm00105a028
日期:1991.1
This paper describes the synthesis and kappa and mu opioid receptor binding affinity of some conformationally restrained derivatives of the arylacetamide group in the selective kappa opioid receptor agonist (+/-)-trans-N-methyl-N-[2-(1-pyrrolidinyl) cyclohexyl]benzo [b]thiophene-4-acetamide monohydrochloride (1,PD117302), which is an analogue of U-50, 488. The methyl-substituted derivatives (+/-)-trans-N
本文描述了选择性乙型阿片受体激动剂(+/-)-反式-N-甲基-N- [2-(1-吡咯烷基)中芳基乙酰胺基的一些构象受约束的衍生物的合成及其与κ和μ阿片受体的结合亲和力)环己基]苯并[b]噻吩-4-乙酰胺盐酸盐(1,PD117302),它是U-50,488的类似物。甲基取代的衍生物(+/-)-反式-N,α-二甲基-N -[2-(1-吡咯烷基)环己基]苯并[b]噻吩-4-乙酰胺盐酸盐(6a,b)对κ阿片受体的亲和力明显弱于1(分别为Ki = 172和3.7 nM)。提出这是由于6的甲基施加的构象限制。为了测试该提议,制备了ena衍生物和4,5-二氢-3H-萘[1,8-bc]噻吩衍生物。 。发现衍生物(+)-N-甲基-N- [7-(1-吡咯烷基)-1-氧杂螺[4.5] dec-8-基] ac碳羧酰胺一盐酸盐(9)具有较高的κ阿片受体亲和力和选择性(kappa Ki = 0.37 +/- 0.05