柔红酮 、
[(2S,3R,4S,6S)-6-bromo-2-methyl-4-[(2,2,2-trifluoroacetyl)amino]oxan-3-yl] acetate 在
mercury dibromide 、
mercury(II) oxide 作用下,
以
二氯甲烷 为溶剂,
以84%的产率得到[(2S,3R,4S,6R)-6-[[(1S,3S)-3-acetyl-3,5,12-trihydroxy-10-methoxy-6,11-dioxo-2,4-dihydro-1H-tetracen-1-yl]oxy]-2-methyl-4-[(2,2,2-trifluoroacetyl)amino]oxan-3-yl] acetate