ethyl 6-methyl-2-oxo-4-[4-[(2S,3R,4R,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxyphenyl]-3,4-dihydro-1H-pyrimidine-5-carboxylate 在
甲醇 、
sodium methylate 作用下,
反应 5.0h,
以91%的产率得到5-ethoxycarbonyl-4-(4-(β-D-allopyranosyloxy)phenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one