O7-(
tert-butyl-dimethyl-silanyl)-
O4,
O5-isopropylidene-
D-
allo-3,6-anhydro-[2]heptulosonic acid methyl ester semicarbazone                                                                                                                                                              在
                                                                                                                                                                                 
sodium ethanolate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
6-<2,3-O-isopropylidene-5-O-(t-butyldimethylsilyl-β-D-ribofuranosyl)>-1,2,4-triazine-3,5(2H,4H)-dione