(E)-5,6-Bis-[4-(tert-butyl-dimethyl-silanyloxy)-phenyl]-oct-5-enoic acid [(2S,3S,4S,6R)-6-((1S,3S)-3-acetyl-3,5,12-trihydroxy-10-methoxy-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacen-1-yloxy)-3-hydroxy-2-methyl-tetrahydro-pyran-4-yl]-amide 在
甲醇 、 potassium fluoride 、
18-冠醚-6 作用下,
以
四氢呋喃 为溶剂,
以98%的产率得到(E)-5,6-Bis-(4-hydroxy-phenyl)-oct-5-enoic acid [(2S,3S,4S,6R)-6-((1S,3S)-3-acetyl-3,5,12-trihydroxy-10-methoxy-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacen-1-yloxy)-3-hydroxy-2-methyl-tetrahydro-pyran-4-yl]-amide