5-(cyanomethyl)-1-β-D-ribofuranosylimidazole-4-carboxamide 5'-phosphate ammonium salt 在
吡啶 、 N,N'-dicyclohexylmorpholinecarboxamidine 、 Dowex 50-X
8 resin Na-form 、
N,N'-二环己基碳二亚胺 作用下,
生成
5-(cyanomethyl)-1-β-D-ribofuranosylimidazole-4-carboxamide 3',5'-cyclic phosphate