Oxidation of 5-Bromo- and 5-Fluoro-1,3-dimethyluracils by Peroxomono- and Peroxodisulfate Ions
作者:Toshio Itahara、Akihiro Nishino
DOI:10.1246/cl.1991.2203
日期:1991.12
Oxidation of 5-bromo-1,3-dimethyluracil by KHSO5 gave 5,5-dibromo-6-hydroxy- and 5,5,6-trihydroxy-1,3-dimethyl-5,6-dihydrouracils and that of 5-fluoro-1,3-dimethyluracil by Na2S2O8 gave a 6,6′-dimeric product.
peroxodisulfate ion in a phosphate buffer solution at pH 7.0 or water at 70—75 °C was investigated. The reaction of thymine and 5-methylcytosine nucleosides and nucleotides resulted in the oxidation of the 5-methyl groups. The oxidation products from 1,3-dimethyluracils and the time-course of the reaction of uracils led to two plausible reaction mechanisms for the oxidation of uracils.
研究了在 pH 7.0 的磷酸盐缓冲溶液或 70-75 °C 的水中用过二硫酸根离子处理核酸碱基、核苷和核苷酸。胸腺嘧啶和 5-甲基胞嘧啶核苷和核苷酸的反应导致 5-甲基基团的氧化。1,3-二甲基尿嘧啶的氧化产物和尿嘧啶反应的时间进程导致了两种可能的尿嘧啶氧化反应机制。