(S)-1-{5-[(E)-2-(2,6-Dimethoxy-5-nitro-pyrimidin-4-yl)-vinyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-trityloxy-ethanol

(S)-1-{5-[(Z)-2-(2,6-Dimethoxy-5-nitro-pyrimidin-4-yl)-vinyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-trityloxy-ethanol

6-C-[(2,5:3,4-di-O-isopropylidene-D-ribityl)methyl]-2,4-dimethoxy-5-nitropyrimidine

(1R,2S)-1-(2,6-dimethoxy-5-nitropyrimidin-4-yl)-2-(2,2,2',2'-tetramethyl[4,4/]bi[1,3'dioxolanyl]-5-yl)ethane-1,2-diol