Tetrahedron

Influerce of chemical structure of nitroxyl spin labels on their reduction by ascorbic acid

WR Couet, RC Brasch, C Sosnovsky, J Lukszo…

Index: Couet, W. R.; Brasch, R. C.; Sosnovsky, G.; Lukszo, J.; Prakash, I.; et. al. Tetrahedron, 1985 , vol. 41, # 7 p. 1165 - 1172

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Citation Number: 83

Abstract

The Influence of structure on the reduction of nitroxyl spin labels by ascorbic acid was examined using both piperidine and pyrrolidine nitroxyls. A five-fold molar excess of ascorbic acid and pH of 7.4 were used. The nitroxyl concentration was measured by electron spin resonance spectrometry. The five-membered (pyrrolidine) nitroxyls were more stable than the six-meabered derivatives. Ring substituents also influenced the reaction. The ...