5-(4-methylphenylazo)-3-cyano-4-methyl-6-phenylpyridine-2-(1H)-thione 、
2,3,4,6-四乙酰氧基-alpha-D-吡喃糖溴化物 在
氢氧化钾 作用下,
以
丙酮 为溶剂,
以66%的产率得到[(2R,3S,4S,5R,6R)-3,4,5-triacetoxy-6-[5-cyano-4-methyl-2-phenyl-3-[(E)-p-tolylazo]-6-thioxo-1-pyridyl]tetrahydropyran-2-yl]methyl acetate