(2R,3R,4R,5R)-2-(2-benzoylhydrazine-1-carbothioamido)-5-((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate 在
磷酸 、
乙酸酐 作用下,
以95%的产率得到(2R,3R,4R,5R)-2-((benzoyloxy)methyl)-5-(3-phenyl-5-thioxo-1,5-dihydro-4H-1,2,4-triazol-4-yl)tetrahydrofuran-3,4-diyl dibenzoate