Fully modified oligonucleotides containing 2′-O-cyanomethylribonucleotides were synthesised on automated DNA synthesisers using protected 2′-O-cyanomethylribonucleoside-3′-O-phosphoramidite building blocks. The 2′-O-cyanomethyloligoribonucleotides were post-synthetically converted into 2′-O-carbamoylmethyloligoribonucleotides during standard deprotection conditions with aqueous ammonia. The complete
使用受保护的2' - O-氰基甲基核糖核苷-3'- O-亚磷酰胺基结构单元,在自动化DNA合成仪上合成了包含2'- O-氰基甲基核糖核苷酸的完全修饰寡核苷酸。2'- Ô -cyanomethyloligoribonucleotides进行合成后变换成2'- ö期间用氨水标准的脱保护条件-carbamoylmethyloligoribonucleotides。使用最终低聚物的离子交换HPLC和MALDI质谱法证明了完全转化。2′- O-氨基甲酰基甲基核糖核苷酸显示,相对于相应的RNA同双链体,具有互补RNA的双链体的解链温度(Tm)大大提高。因此,这些类似物应被证明可用于多种反义应用。