Azide−Tetrazole Equilibrium of C-6 Azidopurine Nucleosides and Their Ligation Reactions with Alkynes
作者:Mahesh K. Lakshman、Manish K. Singh、Damon Parrish、Raghavan Balachandran、Billy W. Day
DOI:10.1021/jo902342z
日期:2010.4.16
nucleosides, access to the azido derivatives could be readily attained via displacement of BtO− from the O6-(benzotriazol-1-yl)inosine nucleosides by azide anion. Use of diphenylphosphoryl azide/DBU as a simple route to the acetyl-protected azido nucleosides was also evaluated, but this proved to be inferior. Since these azido nucleosides can exist in an azide·tetrazoleequilibrium, the effect of solvent