Synthesis and Pharmacological Evaluation of Novel Octahydro-1<i>H</i>-pyrido[1,2-a]pyrazine as μ-Opioid Receptor Antagonists
作者:Bertrand Le Bourdonnec、Allan J. Goodman、Thomas M. Graczyk、Serge Belanger、Pamela R. Seida、Robert N. DeHaven、Roland E. Dolle
DOI:10.1021/jm0604878
日期:2006.12.1
antagonist activity (IC(50) = 0.54 nM). On the basis of structure 4, a new series of mu-opioid receptor antagonists were designed. In these compounds the octahydroquinolizine template of 4 was replaced by an octahydro-1H-pyrido[1,2-a]pyrazine scaffold. The new derivatives were tested for their binding affinities and in vitro functional activity against the cloned human mu-, delta-, and kappa-opioid receptors
为了更好地理解反式3,4-二甲基-4-(3-羟苯基)哌啶类mu配体与mu阿片受体相互作用的结构要求,我们在先前的文章中进行了描述(Le Bourdonnec,B. (J. Med。Chem。2006,25,7278-7289)的新的,受约束的N-苯乙基衍生物3的类似物。一种受约束的活性类似物化合物4表现出亚纳摩尔的类阿片受体亲和力(K(i) = 0.62 nM)和有效的阿片类拮抗剂活性(IC(50)= 0.54 nM)。在结构4的基础上,设计了一系列新的μ阿片受体拮抗剂。在这些化合物中,4的八氢喹啉嗪模板被八氢-1H-吡啶并[1,2-a]吡嗪支架取代。测试了新衍生物的结合亲和力和体外抗克隆人mu-,delta-,和κ阿片受体。从这项研究中,我们确定了化合物36,它对mu阿片受体具有高亲和力(K(i)= 0.47 nM),在体外具有很强的mu拮抗剂活性(IC(50)= 1.8 nM),并改善了结合选择性分布mu