Structure−Activity Relationships of Methoctramine-Related Polyamines as Muscular Nicotinic Receptor Noncompetitive Antagonists. 2. Role of Polymethylene Chain Lengths Separating Amine Functions and of Substituents on the Terminal Nitrogen Atoms
作者:Michela Rosini、M. Gabriele Bixel、Gabriella Marucci、Roberta Budriesi、Michael Krauss、Maria L. Bolognesi、Anna Minarini、Vincenzo Tumiatti、Ferdinand Hucho、Carlo Melchiorre
DOI:10.1021/jm011067f
日期:2002.4.1
compounds, like prototype 1, were noncompetitive antagonists of nicotinic receptors while being competitive antagonists at M(2) and M(3) mAChRs. The biological profile of polyamines 4-7 revealed that increasing the number of amine functions and the chain length separating these nitrogen atoms led to a significant improvement in potency at nAChRs. Moreover, the role of the number and type of amine functions
聚亚甲基四胺甲辛胺(1)是一种典型的抗毒蕈碱配体,对肌肉nAChR具有显着的亲和力。因此,根据通用模板方法,对1进行结构修饰以提高对肌肉型nAChR的亲和力和选择性。合成的多胺衍生物分别在蛙直肌和鱼雷nAChRs和豚鼠左心房(M(2))和回肠纵肌(M(3))mAChRs上进行测试。所有化合物,如原型1,都是烟碱样受体的非竞争性拮抗剂,同时是M(2)和M(3)mAChRs的竞争性拮抗剂。多胺4-7的生物学特性表明,增加胺官能团的数量和分隔这些氮原子的链长导致nAChRs的效力显着提高。此外,通过合成化合物9和10,进一步研究了胺官能团的数量和类型在与nAChRs相互作用中的作用,显示了四胺8和11,在氮原子之间带有相当刚性的间隔基,而不是非常柔软的聚亚甲基链,在nAChRs处的分布类似于1,而在mAChRs处观察到效力显着降低。带有2-甲氧基苯乙基的四胺12的效力比1低,而带有二苯乙基部分的