Synthesis of sulfur containing dihydro-pyrrolo derivatives and their biological evaluation as antioxidants
摘要:
The 1,3-dipolar cycloaddition to N-phenylmaleimide of azomethine ylides, generated in situ from sulfanyl-substituted imines of glycine esters, yields 5H-dihydro-pyrrolo products with syn diastereoselectivity. The syn (major) and anti (minor) products were isolated chromatographically and fully characterized by spectroscopic methods and in two cases also by X-ray analysis. The diastereomeric cycloadducts were tested for their antioxidant activity with good results. (C) 2012 Elsevier Ltd. All rights reserved.
Stereospecific α-amination has been accomplished via addition of N -phenyltriazolinedione (PhTAD) to the allylic position of dihydropyrroles. The aim of this study is to evaluate new PhTAD derivatives of biologically active bicyclic dihydropyrroles. Ene reaction was accomplished via addition of PhTAD to the allylic position to react with syn and anti diastereomers for α-amination. The α-amination depends
Synthesis of sulfur containing dihydro-pyrrolo derivatives and their biological evaluation as antioxidants
作者:Dimitra Georgiou、Vasilios Toutountzoglou、Kenneth W. Muir、Dimitra Hadjipavlou-Litina、Yiannis Elemes
DOI:10.1016/j.bmc.2012.07.014
日期:2012.9
The 1,3-dipolar cycloaddition to N-phenylmaleimide of azomethine ylides, generated in situ from sulfanyl-substituted imines of glycine esters, yields 5H-dihydro-pyrrolo products with syn diastereoselectivity. The syn (major) and anti (minor) products were isolated chromatographically and fully characterized by spectroscopic methods and in two cases also by X-ray analysis. The diastereomeric cycloadducts were tested for their antioxidant activity with good results. (C) 2012 Elsevier Ltd. All rights reserved.