Synthesis of Oligonucleotides Containing Fapy·dG (<i>N</i><sup>6</sup>-(2-Deoxy-α,β-<scp>d</scp>-erythropentofuranosyl)-2,6-diamino-4-hydroxy-5-formamidopyrimidine) Using a 5‘-Dimethoxytrityl Dinucleotide Phosphoramidite
作者:Yu Lin Jiang、Carissa J. Wiederholt、Jennifer N. Patro、Kazuhiro Haraguchi、Marc M. Greenberg
DOI:10.1021/jo048253o
日期:2005.1.1
phosphoramidites. An improved method for synthesizing oligonucleotides containing Fapy·dG, which does not require reverse phosphoramidites, is described. Fapy·dG containing dinucleotide phosphoramidites containing 5‘-thymidine (11a) or 5‘-deoxycytidine (15) are prepared and employed in oligonucleotide synthesis. Oligonucleotide purity is assayed using the DNA repair enzyme formamidopyrimidine DNA glycosylase
Fapy·dG(N 6-(2-脱氧-α,β- d-赤型呋喃呋喃糖基)-2,6-二氨基-4-羟基-5-甲酰胺基嘧啶)是一种由多种DNA破坏剂产生的修饰的嘌呤病变,显示出令人感兴趣的生化特性。先前的用于合成包含Fapy·dG的寡核苷酸的方法使用了反向二核苷酸亚磷酰胺,这也需要合成适当的反向亚磷酰胺。描述了一种合成不需要Fapy·dG的寡核苷酸的改进方法,该方法不需要反向亚磷酰胺。含有Fapy·dG的含有5'-胸苷(11a)或5'-脱氧胞苷(15制备)并将其用于寡核苷酸合成中。使用DNA修复酶甲酰嘧啶DNA糖基化酶和ESI-MS测定寡核苷酸的纯度。