Synthesis and in Vitro Antimalarial Testing of Neocryptolepines: SAR Study for Improved Activity by Introduction and Modifications of Side Chains at C2 and C11 on Indolo[2,3-<i>b</i>]quinolines
作者:Zhen-Wu Mei、Li Wang、Wen-Jie Lu、Cui-Qing Pang、Tsukasa Maeda、Wei Peng、Marcel Kaiser、Ibrahim El Sayed、Tsutomu Inokuchi
DOI:10.1021/jm300887b
日期:2013.2.28
substituents were transformed into the corresponding acyclic or cyclic carbamides or thiocarbamides. These side chain modified neocryptolepine derivatives were tested for antimalarial activity against CQR (K1) and CQS (NF54) of Plasmodium falciparum in vitro and for cytotoxicity toward mammalian L6 cells. Among the tested compounds, the compound 17f showed an IC50 of 2.2 nM for CQS (NF54) and a selectivity
为了获得新隐油菜籽衍生物的高抗疟活性,需要通过改变C2位置的吸电子或供电子性质的取代基来修饰和改变C11位置的侧链,以进行SAR研究。将烷基氨基和ω-氨基烷基氨基安装在新隐油菜芯的C11位置是成功的。为了进一步变化,将氨基烷基氨基取代基转化成相应的无环或环状氨基甲酰胺或硫代氨基甲酰胺。在体外测试了这些侧链修饰的新隐肾上腺素衍生物对恶性疟原虫的CQR(K1)和CQS(NF54)的抗疟活性以及对哺乳动物L6细胞的细胞毒性。在测试的化合物中,化合物17f显示出ICCQS(NF54)的50为2.2 nM,选择性指数为1400,17i显示CQR(K1)的IC 50为2.2 nM,选择性指数为1243,电阻指数为0.5。