Incorporation of Basic Side Chains into Cryptolepine Scaffold: Structure−Antimalarial Activity Relationships and Mechanistic Studies
作者:João Lavrado、Ghislain G. Cabal、Miguel Prudêncio、Maria M. Mota、Jiri Gut、Philip J. Rosenthal、Cecília Díaz、Rita C. Guedes、Daniel J. V. A. dos Santos、Elena Bichenkova、Kenneth T. Douglas、Rui Moreira、Alexandra Paulo
DOI:10.1021/jm101383f
日期:2011.2.10
The synthesis of cryptolepine derivatives containing basic side-chains at the C-11 position and their evaluations for antiplasmodial and cytotoxicity properties are reported. Propyl, butyl, and cycloalkyl diamine side chains significantly increased activity against chloroquine-resistant Plasmodium falciparum strains while reducing cytotoxicity when compared with the parent compound. Localization studies
报道了在C-11位上含有基本侧链的隐肾上腺素衍生物的合成及其抗血浆和细胞毒性的评价。丙基,丁基和环烷基二胺侧链显着提高了对耐氯喹的恶性疟原虫的活性与母体化合物相比,可降低细胞毒性。通过荧光显微镜对寄生虫血液阶段进行的定位研究表明,这些衍生物在核内积累,表明掺入碱性侧链不足以促进寄生虫在酸性消化液中的选择性积累。该系列中的大多数化合物都具有与双链DNA双链体以及单体血红素结合的能力,表明这些是与观察到的抗疟活性相关的可能靶标。总体而言,这些具有显着改善的抗疟原虫活性和选择性指数的新型隐氯仿类似物为开发抗药性疟疾寄生虫的有效且高度选择性的药物提供了有希望的起点。