Click fleximers: a modular approach to purine base-expanded ribonucleoside analogues
作者:André H. St. Amant、Leslie A. Bean、J. Peter Guthrie、Robert H. E. Hudson
DOI:10.1039/c2ob25678a
日期:——
The synthesis of nucleoside analogues incorporating 4-(5-pyrimidinyl)-1,2,3-triazole aglycons as expanded purine nucleobase mimics were accessed using the copper-catalyzed azide–alkyne Huisgen cycloaddition between a ribosyl azide and 5-alkynylpyrimidines. Depending on the nature of the alkyne employed, other nucleoside analogues that possess fluorescence or potential metal-binding properties were prepared. Computational studies were undertaken on the purine analogues and indicate that the heterocycles of the unfused nucleobase prefer a coplanar arrangement and the anti-glycosidic conformer is favoured in most instances.