Novel phosphorylation reagents for improved processes to convert terminal hydroxyl groups of oligonucleotides into phosphate monoesters
申请人:Proligo, LLC
公开号:US20040230047A1
公开(公告)日:2004-11-18
The present invention discloses novel phosphoramidite reagents for use in oligonucleotide synthesis. The present invention further discloses novel methods for the conversion of terminal hydroxyl groups of oligonucleotides into phosphate monoesters. By employing novel reagents, as also disclosed herein, the methods are fully compatible with standard procedures for solid phase oligonucleotide synthesis and do not require additional processing steps. The inventive reagents to phosphorylate terminal hydroxyl groups of oligonucleotides are superior to the prior art in that they for the first time combine the desired attributes of being a solid compound for facile handling, comprising two &bgr;-eliminating protective groups removable as fast or faster than the standard cyanoethyl group, providing a DMT-group for easy monitoring of the coupling efficiency, and enabling a fast final deprotection of the phosphorylated oligonucleotide without any extra manipulation steps.
本发明揭示了用于寡核苷酸合成的新型磷酰胺酯试剂。本发明进一步揭示了将寡核苷酸的末端羟基转化为磷酸单酯的新方法。通过采用本文中还披露的新型试剂,这些方法与固相寡核苷酸合成的标准程序完全兼容,不需要额外的处理步骤。本发明的试剂用于磷酸化寡核苷酸的末端羟基,优于先前的技术,因为它们首次结合了以下所需特性:作为固体化合物便于处理,包括两个可快速去除的β-消除保护基,这些基团的去除速度快于标准的氰乙基基团,提供一个DMT基团便于监测偶联效率,并且使磷酸化寡核苷酸的最终去保护过程快速进行,无需任何额外的操作步骤。