Synthesis and <i>in Vitro</i> Testing of Antimalarial Activity of Non-natural-Type Neocryptolepines: Structure–Activity Relationship Study of 2,11- and 9,11-Disubstituted 6-Methylindolo[2,3-<i>b</i>]quinolines
作者:Ning Wang、Kathryn Jean Wicht、Li Wang、Wen-Jie Lu、Ryuhei Misumi、Ming-qi Wang、Ahmed Abdel Aleem El Gokha、Marcel Kaiser、Ibrahim El Tantawy El Sayed、Timothy John Egan、Tsutomu Inokuchi
DOI:10.1248/cpb.c13-00639
日期:——
This report describes the synthesis and in vitro anti-malarial evaluations of certain C2 or C8 and C11-disubstituted 6-methyl-5H-indolo[2,3-b]quinoline (neocryptolepine congener) derivatives. To attain higher activities, the structure–activity relationship (SAR) studies were conducted by varying the kind of alkylamino or ω-aminoalkylamino stubstituents at C11 and with Cl at the C2 position, or CO2Me
该报告描述了某些C2或C8和C11-二取代的6-甲基-5H-吲哚并[2,3-b]喹啉(新隐油菜籽同源物)衍生物的合成及体外抗疟疾评估。为了获得更高的活性,通过改变C11处的烷基氨基或ω-氨基烷基氨基取代基的种类进行结构-活性关系(SAR)研究,C2处为Cl,C9处为CO2Me。与11-非(烷基氨基)衍生物相比,所测试化合物的抗疟疾活性显着提高。C11处的3-氨丙基氨基进一步被修饰为尿素和硫脲,从而改善了对正常细胞的细胞毒性。用化合物8和9d对抗NF54菌株可获得最佳结果,IC(50)/ SI值分别为86 nM / 20和317 nM / 370。此外,测试化合物对β-血红素的抑制作用。发现十二个具有低于100 µM的IC(50)值,并且发现那些具有碱性氨基侧链的衍生物在NF54菌株中抑制了β-血红素抑制和细胞生长之间的线性相关性。在NF54活性和与溶剂化和极性有关的理化因素之间鉴定出第二种相关性。