5’-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-2’,3’-O-isopropylideneguanosine-8-methyl-(81→5’-S)-2’,3’-O-isopropylidene-5’-thiocytidine-6-methyl-(61→5’-S)-2’,3’-O-isopropylidene-5’-thiouridine-6-methyl-(61→5’-S)-2’,3’-O-isopropylidene-5’-thioadenosine-8-methyl-(81→5’-S)-2’,3’-O-isopropylidene-5’-thiouridine-6-methyl-(61→5’-S)-2’,3’-O-isopropylidene-5’-thioadenosine-8-methyl-(81→5’-S)-2’,3’-O-isopropylidene-5’-thioguanosine-8-methyl-(81→5’-S)-6-(hydroxymethyl)-2’,3’-O-isopropylidene-5’-thiocytidine 在
甲酸 作用下,
以
水 为溶剂,
反应 18.0h,
以60%的产率得到guanosine-8-methyl-(8
1→5’-S)-5’-thiocytidine-6-methyl-(6
1→5’-S)-5’-thiouridine-6-methyl-(6
1→5’-S)-5’-thioadenosine-8-methyl-(8
1→5’-S)-5’-thiouridine-6-methyl-(6
1→5’-S)-5’-thioadenosine-8-methyl-(8
1→5’-S)-5’-thioguanosine-8-methyl-(8
1→5’-S)-6-(hydroxymethyl)-5’-thiocytidine