乙醇溶液中维生素K1还原的脉冲辐解研究。

Pulse radiolysis study of vitamin K1 reduction in ethanolic solution.

作者信息

Fackir L, Jore D, Gardès-Albert M, Acher F, Azerad R, Hickel B

机构信息

Laboratoire de Chimie Physique, URA 400 CNRS, Paris, France.

出版信息

Radiat Res. 1995 Jan;141(1):86-90.

PMID:7997519

Abstract

A pulse radiolysis study of vitamin K1 reduction was carried out in argon-saturated ethanolic solutions. The alpha-hydroxyethyl radicals CH3C.HOH (R.) and the solvated electrons (e-solv) reduce vitamin K1, leading to the semiquinone transient K1H.. This species, characterized by its absorption spectrum, decays by disproportionation and leads to the formation of the hydroquinone K1H2. The rate constants of the monoelectronic exchanges involved in this reduction have been determined.

摘要

在氩气饱和的乙醇溶液中进行了维生素K1还原的脉冲辐解研究。α-羟乙基自由基CH3C.HOH（R.）和溶剂化电子（e-solv）还原维生素K1，生成半醌瞬态K1H..。该物种通过其吸收光谱表征，通过歧化反应衰变并导致对苯二酚K1H2的形成。已经确定了该还原过程中涉及的单电子交换的速率常数。