Acetic acid (2R,3S,5R)-2-acetoxymethyl-5-(6-methyl-3-oxo-5-thioxo-4,5-dihydro-3H-[1,2,4]triazin-2-yl)-tetrahydro-thiophen-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
氨                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 72.0h,
                                                                                                                以93%的产率得到5-Amino-2-((2R,4S,5R)-4-hydroxy-5-hydroxymethyl-tetrahydro-thiophen-2-yl)-6-methyl-2H-[1,2,4]triazin-3-one