Synthesis and Antitumor Properties of <i>N</i>-[2-(Dimethylamino)ethyl]carboxamide Derivatives of Fused Tetracyclic Quinolines and Quinoxalines: A New Class of Putative Topoisomerase Inhibitors
作者:Leslie W. Deady、Anthony J. Kaye、Graeme J. Finlay、Bruce C. Baguley、William A. Denny
DOI:10.1021/jm970044r
日期:1997.6.1
does not result primarily from inhibition of topo II. The quinoxaline analogues had more varied IC50 values, being on average less cytotoxic than the quinoline derivatives, but appeared to have a similar mode of action. Overall, this newclass of compounds appear to be mixed topo I/II inhibitors, up to 3-fold more cytotoxic than DACA in the human leukemia cell lines studied, with in vivo activity in
制备了一系列四环喹啉和喹喔啉羧酰胺,并在一系列鼠类人肿瘤细胞系中评估了它们的细胞毒性。多数喹啉衍生物是通过适应Pfitzinger合成,随后进行热脱羧并使用氯甲酸异丁酯通过混合酸酐法与N,N-二甲基乙二胺偶联而制备的。喹啉类似物显示出与已知的三环a啶-4-羧酰胺混合的topoI / II抑制剂DACA相似的细胞毒性,其中噻吩和茚满类似物最具活性。他们显示出对Jurkat人白血病topo II耐药株JLA和JLC的效力几乎没有降低,表明它们的细胞毒性并非主要是由于对topo II的抑制所致。喹喔啉类似物的IC50值变化更大,与喹啉衍生物相比,其平均细胞毒性要低,但似乎具有相似的作用方式。总的来说,这类新化合物似乎是混合的topo I / II抑制剂,在研究的人类白血病细胞系中的细胞毒性比DACA高三倍,在结肠38的体内活性与DACA和阿霉素相当。