Structure−Activity Relationships of Acetylcholinesterase Noncovalent Inhibitors Based on a Polyamine Backbone. 2. Role of the Substituents on the Phenyl Ring and Nitrogen Atoms of Caproctamine
作者:Vincenzo Tumiatti、Michela Rosini、Manuela Bartolini、Andrea Cavalli、Gabriella Marucci、Vincenza Andrisano、Piero Angeli、Rita Banzi、Anna Minarini、Maurizio Recanatini、Carlo Melchiorre
DOI:10.1021/jm021055+
日期:2003.3.1
therapeutics, we investigated the structure-activity relationships (SAR) of a lead compound (caproctamine, 3) identified in a previous work. In particular, we varied the substituents on the phenyl ring and on the nitrogen functions (both the amine and the amide), and studied the effects of such modifications on the inhibitory potency against isolated acetyl- and butyryl-cholinesterase (AChE and BChE). Moreover
继续我们在阿尔茨海默氏病治疗领域中潜在感兴趣的基于多胺的化合物的研究,我们研究了先前工作中发现的先导化合物(caproctamine,3)的构效关系(SAR)。特别是,我们改变了苯环和氮官能团(胺和酰胺)上的取代基,并研究了这些修饰对分离的乙酰胆碱酯酶和丁酰胆碱酯酶(AChE和BChE)的抑制能力的影响。此外,测定了所选化合物逆转d-微管尿素诱导的神经肌肉阻滞的能力及其对豚鼠左心房中毒蕈碱M(2)受体的拮抗作用。SAR最有趣的结果是确定了2个取代基的电子特性(通过pK(a)测量)与叔胺化合物6-12的AChE抑制能力(pIC(50))之间的关系,这一点已通过以下方法得到证实:相应的甲硫醚衍生物14-20的pIC(50)值的不变性。关于生物学特征,最有趣的化合物是己内酰胺(9)的N-乙基类似物,对AChE和pCh(50)的pIC(50)值分别为7.73(+/- 0.02)和5.65(+/- 0