Greener synthesis using hydrogen peroxide in ethyl acetate of alicyclic ring-fused benzimidazoles and anti-tumour benzimidazolequinones
作者:Martin Sweeney、Michael Gurry、Lee-Ann J. Keane、Fawaz Aldabbagh
DOI:10.1016/j.tetlet.2017.07.102
日期:2017.9
Environmentally-friendly and cost effective hydrogenperoxide in ethylacetate was used to prepare in high yields pyrrolo[1,2-a]benzimidazoles from commercial o-(pyrrolidin-1-yl)anilines without the requirement for organic-aqueous extraction and chromatography. Six, seven and eight membered ring-fused analogues were similarly obtained in high yields with methanesulfonic acid required for the pyrido[1
使用环境友好且经济高效的乙酸乙酯中的过氧化氢,无需有机水萃取和色谱法即可从商业邻-(吡咯烷基-1-基)苯胺制备高收率的吡咯并[1,2- a ]苯并咪唑。用吡啶[1,2- a ]苯并咪唑所需的甲磺酸,以高收率相似地获得了六,七和八元环稠合的类似物。通过3,6-二甲氧基-2-(环氨基)苯胺的环化,可以高产率获得抗肿瘤苯并咪唑醌衍生物。
Synthesis of condensed heterocycles via cyclopropylimine rearrangement of cyclopropylazoles
作者:Yury V. Tomilov、Dmitry N. Platonov、Aleksandr E. Frumkin、Dmitry L. Lipilin、Rinat F. Salikov
DOI:10.1016/j.tetlet.2010.07.096
日期:2010.9
Thermal cyclopropylimine rearrangement of cyclopropylazoles into condensed heterocycles and factors affecting the regioselectivity and conversion are reported. A method of conducting the reaction in the absence of solvents is developed. A series of 2-cyclopropylazoles, including novel examples, is synthesized and their transformations into the corresponding condensed heterocyclic compounds (2,3-dihydro-1H-pyrroles
The influence of the aziridinyl substituent of benzimidazoles and benzimidazolequinones on toxicity towards normal and Fanconi anaemia cells
作者:Karen Fahey、Liz O'Donovan、Miriam Carr、Michael P. Carty、Fawaz Aldabbagh
DOI:10.1016/j.ejmech.2010.01.026
日期:2010.5
Aziridinyl substituted benzimidazolequinones are more toxic than methoxy analogues towards normal human fibroblast cells (GM00637). The aziridinyl substituent is required for hypersensitive killing of Fanconi anaemia (FA) cells (PD20i) deficient in FANCD2. Despite lacking quinone functionality, 4,7-dimethoxy-N-[(aziridin-2-yl)methyl]benzimidazole also induces hypersensitivity from FA cells, similar to their response towards mitomycin C. Expression of FANCD2 (in PD20:RV) corrects FA cell hypersensitivity supporting cellular response via the FANC pathway. (C) 2010 Elsevier Masson SAS. All rights reserved.