合成吡咯并[3,4- h ]喹啉-2-酮作为角呋喃香豆素当归的氮等价物,目的是获得具有增加的抗增殖活性和较低的不良毒性作用的新型光化学治疗剂。寻求一种通用的合成途径以分离具有在吡咯部分上的良好取代模式的新环系统的衍生物。新化合物的光生物学筛选显示出强大的光毒性作用和很大的UVA剂量依赖性,在亚微摩尔水平下达到IC 50值。诱导的细胞光细胞毒性与线粒体和溶酶体的参与,细胞周期谱的改变和膜脂质过氧化的凋亡有关。
The synthesis of a novel class of tetrahydropyrrolo[3,4-g]indazoles is reported, by annelation of the pyrazole ring on the isoindole moiety by means of 5-hydroxymethylene tetrahydroisoindole-4-ones key intermediates, with good regioselectivity. Dihydroderivatives were also obtained by oxidation with DDQ of the corresponding tetrahydropyrrolo[3,4-g]indazoles. The growth inhibitory effect was evaluated at the National Cancer Institute of Bethesda and some derivatives showed modest activity. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of a new class of pyrrolo[3,4-h]quinazolines with antimitotic activity
A new series of pyrrolo[3,4-h]quinazolines was conveniently prepared with a broad substitution pattern. A large number of derivatives was obtained and the cellular cytotoxicity was evaluated in vitro against 5 different human tumor cell lines with GI(50) values reaching the low micromolar level (1.3-19.8 mu M). These compounds were able to induce cell death mainly by apoptosis through a mitochondrial dependent pathway. Selected compounds showed antimitotic activity and a reduction of tubulin polymerization in a concentration-dependent manner. Moreover, they showed anti-angiogenic properties since reduced in vitro endothelial cell migration and disrupted HUVEC capillary-like tube network in Matrigel. (C) 2013 Elsevier Masson SAS. All rights reserved.