2′-Fluorinated Northern methanocarbacyclic (2′-F-NMC) nucleosides and phosphoramidites, based on a bicyclo[3.1.0]hexane scaffold bearing all four natural nucleobases (U, C, A, and G), were synthesized to enable exploration of this novel nucleotide modification related to the clinically validated 2′-deoxy-2′-fluororibonucleotides (2′-F-RNA). Biophysical properties of the 2′-F-NMC-containing oligonucleotides
2′-
氟化北基于带有所有四个天然核碱基(U,C,A和G)的
双环[3.1.0]己烷骨架,合成了甲碳环(2'-F-NMC)核苷和亚
磷酰胺,从而能够探索这种新颖的核苷酸修饰与临床验证的
2'-脱氧-2'-氟核糖核苷酸(2'-F-RNA)有关。评价了含有2'-F-NMC的寡核苷酸的
生物物理特性。2'-F-NMC修饰的寡核苷酸与RNA的双链体显示出与亲本RNA双链体相似的热稳定性,2'-F-NMC修饰的寡核苷酸对5'-和3'-核酸外切的降解具有更高的稳定性。相应的用2'-F-RNA修饰的寡核苷酸和2'-F-NMC修饰的寡核苷酸显示出比相应的RNA寡核苷酸以及用2'-F-RNA修饰的寡核苷酸更高的亲脂性。