4-amino-5-(aminocarbonyl)-6-(methylthio)-7-<(2-hydroxyethoxy)methyl>pyrrolo<2,3-d>pyrimidine 、
氨基磺酰氯 、
calcium carbonate 以
N,N-二甲基甲酰胺 为溶剂,
以to provide sulfamic acid 2-((4-amino-5-carbamoyl-6-(methylthio)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methoxy)ethyl ester的产率得到sulfamic acid 2-((4-amino-5-carbamoyl-6-(methylthio)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methoxy)ethyl ester