Hydrophilic modifications in peptide nucleic acid — Synthesis and properties of PNA possessing 5-hydroxymethyluracil and 5-hydroxymethylcytosine
作者:Robert HE Hudson、Yuhong Liu、Filip Wojciechowski
DOI:10.1139/v07-030
日期:2007.4.1
precedent, we prepared a peptide nucleic acid monomer, possessing 5-hydroxymethyuracil, which was compatible with Fmoc-based oligopeptide synthesis. An improved, large-scale synthesis of 5-hydroxymethylcytosine was developed, as a starting point for the synthesis of a monomer containing this nucleobase. In each case, the hydroxyl group was blocked as a t-butyldiphenylsilyl ether, and the exocyclic amino
我们研究了在肽核酸 (PNA) 中掺入 C5-羟甲基-尿嘧啶和 -胞嘧啶的化学过程以及这种修饰对 PNA 杂交行为的后续影响。很大程度上基于文献先例,我们制备了一种肽核酸单体,具有 5-羟基甲氧嘧啶,与基于 Fmoc 的寡肽合成兼容。开发了一种改进的、大规模的 5-羟甲基胞嘧啶合成方法,作为合成含有该核碱基的单体的起点。在每种情况下,羟基被封闭为叔丁基二苯基甲硅烷基醚,胞嘧啶的环外氨基另外被苯甲酰基封闭。使用标准方案将修饰的单体并入寡聚体序列中的分离位置。