1-(
O5-acetyl-
O2,
O3-isopropylidene-β-
D-ribofuranosyl)-5-amino-1
H-imidazole-4-carboxylic acid amide 、
methoxyacetyl isothiocyanate 生成 1-(5'-O-acetyl-2',3'-O-isopropylidene-β-D-ribofuranosyl)-5-<3-(methoxyacetyl)thioureido>imidazole-4-carboxamide