Reinvestigation into the Synthesis of Oligonucleotides Containing 5-(β-D-Glucopyranosyloxymethyl)-2′-deoxyuridine
作者:John J. Turner、Nico J. Meeuwenoord、Anita Rood、Piet Borst、Gijs A. van der Marel、Jacques H. van Boom
DOI:10.1002/ejoc.200300218
日期:2003.10
A reinvestigation into the synthesis of oligonucleotides containing 5-(β-D-glucopyranosyloxymethyl)-2′-deoxyuridine revealed that existing procedures for the preparation of these DNA fragments suffered from decomposition at the final deprotection step. The decomposition product was identified as the corresponding 5-(aminomethyl)-2′deoxyuridyl derivative arising from amino substitution of the β-D-glucosyl
对含有 5-(β-D-吡喃葡萄糖基氧基甲基)-2'-脱氧尿苷的寡核苷酸合成的重新研究表明,现有的制备这些 DNA 片段的程序在最后的脱保护步骤中受到分解。分解产物被鉴定为相应的 5-(氨基甲基)-2'脱氧尿苷基衍生物,由氨解过程中 β-D-葡萄糖基部分的氨基取代产生。这表明通过使用亚磷酰胺 21 代替 12 进行固相寡核苷酸合成,并结合室温下的短氨处理,可以抑制这种情况。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)