Synthesis and biological activity of 1,2,4-oxadiazole derivatives: highly potent and efficacious agonists for cortical muscarinic receptors
作者:Leslie J. Street、Raymond Baker、Tracey Book、Clare O. Kneen、Angus M. MacLeod、Kevin J. Merchant、Graham A. Showell、John Saunders、Richard H. Herbert
DOI:10.1021/jm00172a003
日期:1990.10
presented to the receptor, at the active site, and the degree of conformational flexibility. The exo-1-azanorbornane 16a represents the optimum arrangement, and this compound is one of the most efficacious and potent muscarinic agonists known. In a series of isoquinuclidine based muscarinic agonists efficacy and affinity are influenced by the geometry between the cationic head.group and hydrogen bond acceptor
据报道,新型的1,2,4-恶二唑类毒蕈碱激动剂的合成和生化评估很容易渗透到中枢神经系统。这些化合物的功效和结合力受到阳离子头基的结构和理化性质的显着影响。在一系列氮杂双环配体中,功效和亲和力受活性位点处受体表面表面积的大小以及构象柔韧性的程度影响。exo-1-azanorbornaneane 16a代表了最佳的排列方式,该化合物是已知的最有效,最有效的毒蕈碱激动剂之一。在一系列基于异喹啉环的毒蕈碱激动剂中,功效和亲和力受阳离子头之间的几何形状影响。基团和氢键受体药效基团和碱基附近的空间体积。22a代表的抗构型对于毒蕈碱活性是最佳的。pKa低于6.5的配体表现出与毒蕈碱受体的弱结合,如二氮杂双环衍生物42所示。