Tricyclic compounds as selective antimuscarinics. 2. Structure-activity relationships of M1-selective antimuscarinics related to pirenzepine
作者:Wolfgang G. Eberlein、Wolfhard W. Engel、Guenter Trummlitz、Guenther Schmidt、Rudolf Hammer
DOI:10.1021/jm00401a016
日期:1988.6
(M1) and gastric fundus (M2). The ratio of IC50 values of the test compounds in the two different tissues was taken as a measure of M1 receptor selectivity. Several derivatives, especially those with flexible side chains, i.e. high degree of freedom of rotation around single bonds, proved to be nonselective. Among semirigid compounds only those containing 6-membered ring systems (11, 13, 14, and 15)
为了对控制M1选择性的那些结构特征有一些了解,已研究了一组选定的pirenzepine类似物,其中三环系统和基本侧链均发生了变化。对来自大脑皮层(M1)和胃底(M2)的大鼠组织匀浆进行结合研究。将两种不同组织中测试化合物的IC 50值之比作为M1受体选择性的量度。几种衍生物,特别是那些具有柔性侧链的衍生物,即围绕单键的高度旋转自由度,被证明是非选择性的。在半刚性化合物中,只有那些含有6元环系统(11、13、14和15)的化合物才显示出明显的M1选择性。讨论了结构活性和结构选择性的原理。