蒽醌支架的化学修饰旨在优化这种生产效率极高的抗肿瘤药物。特别是,我们先前报道的蒽[2,3 - b ]呋喃-3-羧酰胺在细胞培养和体内显示出很高的细胞毒性。在这项研究中,我们扩展了炭疽的系列[2,3- b]呋喃-3-羧酰胺通过修饰关键的官能团并在该化学型内剖析了结构-活性关系。大多数新化合物在亚微摩尔至低微摩尔浓度下抑制哺乳动物肿瘤细胞系的生长。我们发现羧酰胺片段中的4,11-羟基以及羰基部分对细胞毒性至关重要,而蒽[2,3- b ]呋喃的2-位取代基不是。重要的是,由于P-糖蛋白(Pgp)的表达或p53的失活,新的衍生物对野生型细胞及其对阿霉素具有抗性的变体具有类似的作用。最具细胞毒性的衍生物6和9通过拓扑异构酶1减弱了质粒DNA的松弛。最后,我们证明了6和9 在1μM时会诱导细胞内氧化应激,细胞周期G2 / M期累积以及胃癌细胞株的凋亡,而不论其p53状态如何。这些结果进一步证实了蒽[2,3
Synthesis and fluorescence of anthra[2,3-b]furan-5,10-dione derivatives
摘要:
4,11-Dialkoxyanthra[2,3-b]furan-5,10-diones containing various substituents in the 3-position were synthesized. Reactions of these compounds with primary and secondary amines resulted in nucleophilic replacement of one or two alkoxy groups by the corresponding amine residues. 4,11-Dialkoxy derivatives of anthra[2,3-b]furan-5,10-dione showed fluorescence with large Stokes shifts (170-200 nm).
Heterocyclic Analogs of 5,12-Naphthacene-Quinone. 12. Synthesis of 2-Substituted Derivatives of 4,11-Dimethoxy-5,10-Dioxo-Anthra[2,3-b]Furan-3-Carboxylic Acids
作者:A. S. Tikhomirov、A. E. Shchekotikhin、Yu. N. Luzikov、A. M. Korolev、M. N. Preobrazhenskaya
DOI:10.1007/s10593-014-1471-x
日期:2014.5
The synthesis of anthrafurandiones, by means of which it is possible to obtain a series of previously unknown 2-substituted derivatives of 4,11-dimethoxy-5,10-dioxoanthra[2,3-b]furan-3-carboxylic acids after protection of the hydroxy groups of the initial 2,3-dibromoquinizarin, was optimized. Unlike most of the analogs, 4,11-dimethoxy-5,10-dioxo-2-(trifluoromethyl)anthra[2,3-b]furan-3-carboxylic acid
Starting from natural product podophyllotoxin 1 substituted heterolignans were identified with promising insecticidal in vivo activity. The impact of substitution in each segment of the core structure was investigated in a detailed SAR study, and variation of substituents in both aromatic moieties afforded derivatives 5 and 43 with broad insecticidal activity against lepidopteran and coleopteran species. In vitro measurements supported by modeling studies indicate that heterolignans 3-134 act as tubuline polymerization inhibitors interacting with the colchicine-binding site. Insect specific structure-activity effects were observed showing that the insecticidal SAR described herein differs from reported cytotoxicity studies. (C) 2009 Elsevier Ltd. All rights reserved.