N-tert-butylmethanimine N-oxide is an efficient spin-trapping probe for EPR analysis of glutathione thiyl radical.
N-tert-butylmethanimine N-oxide is an efficient spin-trapping probe for EPR analysis of glutathione thiyl radical.
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DOI:
10.1038/srep38773
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发表时间:
2016-12-12
影响因子:
4.6
通讯作者:
Stoyanovsky DA
中科院分区:
文献类型:
--
作者:
Scott MJ;Billiar TR;Stoyanovsky DA
The electron spin resonance (EPR) spin-trapping technique allows detection of radical species with nanosecond half-lives. This technique is based on the high rates of addition of radicals to nitrones or nitroso compounds (spin traps; STs). The paramagnetic nitroxides (spin-adducts) formed as a result of reactions between STs and radical species are relatively stable compounds whose EPR spectra represent “structural fingerprints” of the parent radical species. Herein we report a novel protocol for the synthesis of N-tert-butylmethanimine N-oxide (EBN), which is the simplest nitrone containing an α-H and a tertiary α′-C atom. We present EPR spin-trapping proof that: (i) EBN is an efficient probe for the analysis of glutathione thiyl radical (GS•); (ii) β-cyclodextrins increase the kinetic stability of the spin-adduct EBN/•SG; and (iii) in aqueous solutions, EBN does not react with superoxide anion radical (O2−•) to form EBN/•OOH to any significant extent. The data presented complement previous studies within the context of synthetic accessibility to EBN and efficient spin-trapping analysis of GS•.
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影响因子:
4.3
作者:
Bardelang, David;Charles, Laurence;Tordo, Paul
通讯作者:
Tordo, Paul
影响因子:
15
作者:
Goldstein, S;Merenyi, G;Samuni, A
通讯作者:
Samuni, A
影响因子:
16.6
作者:
Amar, Michal;Bar, Sukanta;Szpilman, Alex M.
通讯作者:
Szpilman, Alex M.
影响因子:
1.8
作者:
JOSEPHY, PD;REHOREK, D;JANZEN, EG
通讯作者:
JANZEN, EG
DOI:
10.1039/j29700000401
发表时间:
1970-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY B-PHYSICAL ORGANIC
影响因子:
--
作者:
CHALFONT, GR;PERKINS, MJ;HORSFIEL.A
通讯作者:
HORSFIEL.A