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)