[(1R,2S)-9-acetyloxy-11-diazo-2-ethyl-1,2-dihydroxy-5,10-dimethoxy-4-oxo-1,3-dihydrobenzo[b]fluoren-6-yl] acetate 在
ammonium cerium (IV) nitrate 作用下,
以
乙腈 为溶剂,
反应 0.33h,
以96%的产率得到(1R,2S)-11-diazo-2-ethyl-1,2-dihydroxy-4,5,10-trioxo-2,3,4,5,10,11-hexahydro-1H-benzo[b]fluorene-6,9-diyl diacetate