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。
Positioning of the Carboxamide Side Chain in 11-Oxo-11 H -indeno[1,2- b ]quinolinecarboxamide Anticancer Agents: Effects on Cytotoxicity
作者:Leslie W. Deady、José Desneves、Anthony J. Kaye、Graeme J. Finlay、Bruce C. Baguley、William A. Denny
DOI:10.1016/s0968-0896(00)00264-9
日期:2001.2
A series of 11-oxo-11H-indeno[1,2-b]quinolines bearing a carboxamide-linked cationic side chain at various positions on the chromophore was studied to determine structure-activity relationships between cytotoxicity and the position of the side chain. The compounds were prepared by Pfitzinger synthesis from an appropriate isatin and 1-indanone, followed by various oxidative steps, to generate the required carboxylic acids. The 4- and 6-carboxamides (with the side chain on a terminal ring, off the short axis of the chromophore) were effective cytotoxins. The dimeric 4- and 6-linked analogues were considerably more cytotoxic than the parent monomers, but had broadly similar activities. In contrast, analogues with side chains at the 8-position ton a terminal ring but off the long axis of the chromophore) or 10-position (off the short axis of the chromophore but in a central ring) were drastically less effective. The 4,10- and 6,10-biscarboxamides had activities between those of the corresponding parent monocarboxamides. The first of these showed good activity against advanced subcutaneous colon 38 tumours in mice. (C) 2001 Elsevier Science Ltd. All rights reserved.