Synthesis and Antiplasmodial Activity of Aminoalkylamino-Substituted Neocryptolepine Derivatives
作者:Ibrahim El Sayed、Pieter Van der Veken、Koen Steert、Liene Dhooghe、Steven Hostyn、Gitte Van Baelen、Guy Lemière、Bert U. W. Maes、Paul Cos、Louis Maes、Jurgen Joossens、Achiel Haemers、Luc Pieters、Koen Augustyns
DOI:10.1021/jm801490z
日期:2009.5.14
A series of chloro- and aminoalkylamino-substituted neocryptolepine (5-methyl-5H-indolo[2,3-b]quinoline) derivatives were synthesized and evaluated as antiplasmodial agents. The evaluation also included cytotoxicity (MRCS cells), inhibition of beta-hematin formation, and DNA interactions (DNA-methyl green assay). Introduction of aminoalkylamino chains increased the antiplasmodial activity of the neocryptolepine core substantially. The most efficient compounds showed antiplasmodial activities in the nanomolar range. N-1,N-1-Diethyl-N-4-(5-methyl-5H-indolo[2,3-b]quinolin-8-yl)pentane-1,4-diamine 11c showed an IC50 of 0.01 mu M and a selectivity index of 1800.