Synthesis and antimalarial activity of new 4-amino-7-chloroquinolyl amides, sulfonamides, ureas and thioureas
作者:Kekeli Ekoue-Kovi、Kimberly Yearick、Daniel P. Iwaniuk、Jayakumar K. Natarajan、John Alumasa、Angel C. de Dios、Paul D. Roepe、Christian Wolf
DOI:10.1016/j.bmc.2008.11.009
日期:2009.1
We report the synthesis and in vitro antimalarial activities of more than 50 7-chloro-4-aminoquinolyl-derived sulfonamides 3–8 and 11–26, ureas 19–22, thioureas 23–26, and amides 27–54. Many of the CQ analogues prepared for this study showed submicromolar antimalarial activity versus HB3 (chloroquine sensitive) and Dd2 (chloroquine resistant strains of Plasmodium falciparum) and low resistance indices
我们报告了 50 多种 7-氯-4-氨基喹啉衍生的磺酰胺3 – 8和11 – 26、尿素19 – 22、硫脲23 – 26和酰胺27 – 54的合成和体外抗疟活性。许多为本研究制备的 CQ 类似物显示出亚微摩尔级抗疟活性,而 HB3(对氯喹敏感)和 Dd2(恶性疟原虫的氯喹抗性菌株)) 和低电阻指数在大多数情况下获得。侧链长度的系统变化和氟化脂肪族和芳香族末端的引入揭示了克服 CQ 抗性的有希望的线索。特别是,磺酰胺3具有短侧链和末端丹磺酰部分,结合了高抗疟原虫效力和低抗性指数,对 HB3 和 Dd2 寄生虫的IC 50 s 分别为 17.5 和 22.7 nM。