2'-C-methylguanosine-5'-[2-[(3-trityloxy-2,2-dimethyl-1-oxopropyl)thio]ethyl-N-benzylphosphoramidate] 、
N,N'-羰基二咪唑 以
N,N-二甲基甲酰胺 为溶剂,
反应 4.5h,
以26%的产率得到S-(2-(((((3aR,4R,6R,6aR)-6-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-6a-methyl-2-oxotetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methoxy)(benzylamino)phosphoryl)oxy)ethyl) 2,2-dimethyl-3-(trityloxy)propanethioate