Es wird ein Verfahren zur Herstellung von Oligoribonucleotiden der Formel
worin n, L, BB, W, T, Y', U, C¹ und C² wie in der Beschreibung definiert sind, mittels Festphasensynthese beschrieben sowie Zwischenprodukte der Formeln
und
Nucleosides. Part LXIII. Acetals as new 2?-O-protecting functions for the synthesis of oligoribonucleotides: Synthesis of uridine building blocks and evaluation of their relative acid stability
A broad variety of new acyclic vinyl ethers (see 6–41) have been synthesized via the vinyl-interchange reaction of ethyl vinyl ether at room temperature using mercury(II) trifluoroacetate as a highly efficient catalyst. The appropriate vinyl ethers were reacted under acidic conditions with 3′,5′-O-silyl-protected uridine 42 to the corresponding 2′-O-(1-alkoxyethyl) derivatives 43–83 which gave, on