Nucleosides, XL1Synthesis and Properties of lin-Naphthamidazole-Ribonucleosides

Abstract
The fusion reaction between 1-trimethylsilylnaphth[2,3-d]imidazole (3) and its 2-methyl derivative (4) with 2,3,5-tri-O-benzoyl-1-bromo-D-ribofuranose (6) leads to anomeric mixtures of the corresponding 2'',3'',5''-tri-O-benzoyl-1.alpha.- and .beta.-D-ribofuranosylnaphth[2,3-d]imidazoles (7,11 and 9,13). Separation of the anomers was achieved by chromatographical means and debenzoylation yielded the corresponding nucleosides (8,12 and 10,14). Structural proofs are based on elementary analysis, UV- and 1H-NMR spectra.