Characterization of Spiroiminodihydantoin as a Product of One-Electron Oxidation of 8-Oxo-7,8-dihydroguanosine
作者:Wenchen Luo、James G. Muller、Elliot M. Rachlin、Cynthia J. Burrows
DOI:10.1021/ol9913643
日期:2000.3.1
[GRAPHICS]Further oxidation of the common DNA lesion 8-oxo-7,8-dihydroguanosine by one-electron oxidants such as IrCl62-, Fe(CN)(6)(3-), or SO4- leads to two major products, depending upon reaction conditions. In nucleosides at pH 7, 22 degrees C, the principal product is shown herein to be a spiroiminodihydantoin nucleoside, as a diastereomeric mixture, that can be characterized by NMR, ESI-MS/MS, and independent synthesis.