Abstract
New analogues of histaprodifen with polar side chains have been stereo selectively synthesized and evaluated as histamine H-1-receptor agonists. As a key transformation the asymmetric aminohydroxylation has been used, which was successfully realized for the first time on an imidazolyl derivative. While all chiral analogues proved to be weak H-1-receptor antagonists, an achiral keto derivative of ...
Abstract
New analogues of histaprodifen with polar side chains have been stereo selectively synthesized and evaluated as histamine H-1-receptor agonists. As a key transformation the asymmetric aminohydroxylation has been used, which was successfully realized for the first time on an imidazolyl derivative. While all chiral analogues proved to be weak H-1-receptor antagonists, an achiral keto derivative of histaprodifen turned out to be the first 2-acylated histamine congener displaying partial H-1-receptor agonism (relative potency 12%). (c) 2005 Elsevier Ltd. All rights reserved.