Synthesis of C, N-diaryl Nitrones from the Reduction of Nitroarene with Aromatic Aldehydes Promoted by Metallic Samarium
作者:Xueshun Jia、Dafeng Li、Qing Huang、Li Zhu、Jian Li
DOI:10.3184/030823407x218057
日期:2007.5
A mild and facile reduction of nitroarene with aromatic aldehydes promoted by metallic samarium to C, N-diaryl nitrones in moderate yields has been developed.
1,3-Dipolar Cycloaddition Reactionsof Nitrones to Prop-1-ene-1,3-sultone
作者:Lun-Zu Liu、Li Tian、Guo-Yan Xu、Yong Ye
DOI:10.1055/s-2003-40201
日期:——
The reaction of prop-1-ene-1,3-sultone (1) with a variety of nitrones 2 afforded novel [3+2] cycloaddition products 3, 4, and 5 in good yield. Excellent regio- and stereoselectivity were achieved in the cycloaddition reaction with phenylnitrones.
Nitrone-containing compounds are commonly employed as spin traps of free radical species in chemical and biological studies. Some molecules as alpha-phenyl-N-t-butyl nitrone (PBN) and its derivatives have been tested as potential drugs to treat oxidative stress related diseases, as Alzheimer and stroke for example. In this work we report the design and the synthesis of alpha-aryl-N-aryl nitrones and their cytoprotection profile on human neuroblastoma cells (SH-SY5Y) under induced oxidative stress. All the nine synthesized nitrones showed a significant response at low micromolar concentration. The selected compound 8 (alpha-phenyl-N-phenyl nitrone) increased the reduced glutathione (GSH) levels by 65% and lowered the necrotic cell death from 25.8% to 3.8%. Based on our data, the designed highly conjugated nitrone double-bond skeleton can be considered as a good scaffold for further studies regarding oxidative stress-related diseases. (c) 2015 Elsevier Ltd. All rights reserved.
Indium mediated allylation of CN compounds in aqueous media
Synthesis of New 2-Chloro-4-(3-Aryl-2,4-Diphenyl-3H-Triazolidine-5-on-1-yl)Quinoline-3-Carbonitriles by a Cyclo-Addition Route Using Carbodiimides and Nitrones. A Novel Thermal Decomposition to 4-Aminoquinolines