(1
S)-1-(7-amino-2-methyl-2
H-pyrazolo[4,3-
d]pyrimidin-3-yl)-
O5-(hydroxy-trichloromethyl-phosphinoyl)-
D-1,4-anhydro-ribitol; ammonium salt 在
potassium tert-butylate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成
(1S)-1-(7-amino-2-methyl-2H-pyrazolo[4,3-d]pyrimidin-3-yl)-O3,O5-hydroxyphosphoryl-D-1,4-anhydro-ribitol