Synthesis of nitroimidazole derived oxazolidinones as antibacterial agents
作者:Vandana Varshney、Nripendra N. Mishra、Praveen K. Shukla、Devi P. Sahu
DOI:10.1016/j.ejmech.2009.11.009
日期:2010.2
A series of N-alkylated derivatives of nitroimidazolyl oxazolidinones 6a–i with various substituent at N-1 position of the nitroimidazole were synthesized and their in-vitro antibacterial activities were evaluated against several Gram-positive and Gram-negative bacteria. The 6a was found to be most potent compound in the series with MIC at 0.097 μg/mL against Bacillus cereus MTCC 430.). Both 6a and
An Efficient Procedure for the 1-Alkylation of 2-Nitroimidazoles and the Synthesis of a Probe for Hypoxia in Solid Tumours
作者:Anthony Long、John Parrick、Richard J. Hodgkiss
DOI:10.1055/s-1991-26552
日期:——
The N-alkylation of 2-nitroimidazole through its 'naked' anion, formed from its alkali metal salts in the presence of crown ethers and in homogeneous solution, is shown to be a useful preparative procedure. The reactions of α,Ï-dihaloalkanes can be controlled to afford either the mono- or diheteroarylalkane. The procedure has been used to alkylate theophylline and to prepare a compound of use as a probe to identify, locate and quantify hypoxia in sections from solid tumours.
Bioreductive fluorescent markers for hypoxic cells: a study of 2-nitroimidazoles with 1-substituents containing fluorescent, bridgehead-nitrogen, bicyclic systems
作者:Richard J. Hodgkiss、Richard W. Middleton、John Parrick、Harshad K. Rami、Peter Wardman、George D. Wilson
DOI:10.1021/jm00088a030
日期:1992.5
cells was compared by flow cytometric analysis. A wide range of cellular fluorescence and hypoxic-oxic differentials in fluorescence was observed when compounds with indolizine fluorophors were incubated with cells, and one such compound was considered suitable for further evaluation in vivo. Two compounds with bimane fluorophors gave very little cellular fluorescence when incubated with hypoxic cells