Structure–Activity Relationships of Novel Anti-Malarial Agents. Part 3: N-(4-Acylamino-3-benzoylphenyl)-4-propoxycinnamic Acid Amides
作者:Jochen Wiesner、Katja Kettler、Hassan Jomaa、Martin Schlitzer
DOI:10.1016/s0960-894x(01)00798-3
日期:2002.2
We have described 5-(4-propoxycinnamoylamino)-2-(4-tolylacetylamino)benzophenone 6e as a novel lead for antimalarial agents. Anti-malarial activity of these 5-(4-propoxycinnamoylamino)benzophenones proved to be quite sensitive against variations of the acyl substituent at the 2-amino group. Best activity was obtained with phenylacetic acid moieties carrying small substituents in the para-position. From the para-substituents evaluated, the trifluoromethyl group yielded the most active compound (6j) in this series (IC50 = 120 nM). Deviations from the phenylacetic acid substructure, shifting the substituent into the ortho-position or bulkier para-substituents resulted in a significant reduction in anti-malarial activity. (C) 2002 Elsevier Science Ltd. All rights reserved.