Phosphoramidites and solid supports based on N-substituted 2,4-dihydroxybutyramides: universal reagents for synthesis of modified oligonucleotides
作者:Natalia N. Dioubankova、Andrei D. Malakhov、Dmitry A. Stetsenko、Michael J. Gait、Vladimir A. Korshun
DOI:10.1016/j.tet.2006.05.008
日期:2006.7
convenient method for synthesis of modified oligonucleotides by use of new non-nucleoside phosphoramidites is reported. A chiral 1,3-diol backbone of the modifying reagents is generated either from (R)-(+)-α-hydroxy-γ-butyrolactone or (R)-(−)-pantolactone. Aliphatic amines were acylated with the lactones to give the corresponding N-substituted 2,4-dihydroxybutyramides. After protection of a side chain,
报道了通过使用新的非核苷亚磷酰胺合成修饰的寡核苷酸的通用且方便的方法。改性剂的手性1,3-二醇主链由(R)-(+)-α-羟基-γ-丁内酯或(R)-(-)-泛内酯产生。脂肪胺与内酯酰化,得到相应的N-取代的2,4-二羟基丁酰胺。在保护侧链之后,如果需要,将二醇转化为亚磷酰胺或适合用于寡核苷酸合成的固体支持物。所述试剂允许将各种功能(例如,烷基胺,咪唑和pyr残基)单个,多个或组合引入合成的寡核苷酸中。缀合物的结构通过MALDI-TOF质谱法确认。