Template-Dependent Incorporation of Spin-Labeled Thymidine Analogs into Viral DNA
作者:Gary T. Pauly、Elisabeth V. Bobst、David Bruckman、Albert M. Bobst
DOI:10.1002/hlca.19890720114
日期:1989.2.1
The synthesis of novel pppUd analogs substituted at position C(5) with tethered nitroxide radicals is reported. It is shown that these analogs can serve as good substrates for E. coli DNA polymerase (Pol I) and T-4 DNA polymerase using lambda-phage DNA as template. The template-dependentincorporation of the substrates was established by radio-labeling and ESR experiments.
Heparin–polynitroxides: Synthesis and preliminary evaluation as cardiovascular EPR/MR imaging probes and extracellular space-targeted antioxidants
作者:Andrei L. Kleschyov、Vasily Sen'、Valery Golubev、Kerstin Münnemann、Dariush Hinderberger、Karl J. Lackner、Stefan Weber、Maxim Terekhov、Laura M. Schreiber、Thomas Münzel
DOI:10.1016/j.ejmech.2012.09.028
日期:2012.12
We report here the synthesis of heparin-polynitroxide derivatives (HPNs) in which nitroxide moieties are linked either to uronic acid or glycosamine residues of the heparin macromolecule. HPNs have low anticoagulant activity, possess superoxide scavenging properties, bind to the vascular endothelium/extra-cellular matrix and can be detected by EPR and MRI techniques. As the vascular wall-targeted redox-active paramagnetic compounds, HPNs may have both diagnostic (molecular MRI) and therapeutic (ecSOD mimics) applications. (c) 2012 Elsevier Masson SAS. All rights reserved.