Fluorescent labelling of ribonucleosides at 2'-terminus; comparative fluorescence studies.

A Misra, S Tripathi, K Misra
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Abstract

In case of RNA's, multiple labelling can be achieved by exploiting the available 2'-OH position of sugar moiety of nucleosides. N-protected nucleoside viz. cytidine has been prepared using a selective photolabile group i.e. 2-nitrobenzyloxycarbonyl. After protection of 5',3'-OH with 1,1,3,3,-tetraisopropyl disiloxyl group, 2'-OH was selectively activated by using N,N'-carbonyl diimidazole (CDI) and subsequently condensed with dansyl amide. After usual deprotection step comparative fluorescence studies of the monomer were carried out using different solvents/buffers.

2′端核糖核苷的荧光标记比较荧光研究。
对于RNA,可以利用核苷糖部分的2'-OH位置实现多重标记。利用选择性光催化基团2-硝基氧羰基制备了n保护核苷,即胞苷。在用1,1,3,3,-四异丙基二硅氧基保护5',3'-OH后,2'-OH被N,N'-羰基二咪唑(CDI)选择性活化,随后与丹酰酰胺缩合。在通常的脱保护步骤后,使用不同的溶剂/缓冲液对单体进行比较荧光研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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