A series of 4-(2-methylimidazol-1-yl)-2.2-diphenyltlutyramide derivati
ves was prepared as part of a search for subtype-selective antimuscari
nic agents. On the basis of measurements of the antimuscarinic activit
y and subtype-selectivity for Mt and M-3 muscarinic receptors, the str
ucture-activity relationships of these compounds are discussed, (C) 19
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