Novel DNA fluorescence probes based on 2-thioxo-tetrahydro-4H-imidazol-4-ones: synthetic and biological studies
作者:Alexander G. Majouga、Anna V. Udina、Elena K. Beloglazkina、Dmitrii A. Skvortsov、Maria I. Zvereva、Olga A. Dontsova、Nikolay V. Zyk、Nikolay S. Zefirov
DOI:10.1016/j.tetlet.2011.10.118
日期:2012.1
An efficient method for the liquid-phase synthesis of 3,5-disubstituted thiohydantoins has been developed. This new class of substituted thiohydantoins was tested as DNA fluorescence probes. Anthracene-substituted thiohydantoin undergoes a change in fluorescence in the presence of DNA. (C) 2011 Elsevier Ltd. All rights reserved.
Different N–C–N formation reactions of aromatic aldehydes and thiohydantoins controlled by Lewis acid promoters
A three-component reaction of aromatic aldehydes, acetonitrile, and 2-thiohydantoins promoted by TiCl4 was discovered, and a different N-C-N bond-forming reaction took place with FeCl3, AlCl3 or BF3 center dot Et2O as promoter. The thiohydantoin derivatives 1 and 3 were synthesized in moderate to high yields. A plausible mechanism for the formation of 1 and 3 is suggested. (C) 2007 Elsevier Ltd. All rights reserved.