N-[(2R,4aR,6R,7R,8R,8aS)-6-[2-[1-(benzenesulfonyl)indol-3-yl]ethoxy]-8-hydroxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]-2-fluoro-5-nitrobenzamide 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以62%的产率得到(1R,11R,12R,14R,17R,19S,20R,30R,31R,33R,36R,38S)-12,31-bis[2-[1-(benzenesulfonyl)indol-3-yl]ethoxy]-6,25-dinitro-17,36-diphenyl-2,13,16,18,21,32,35,37-octaoxa-10,29-diazaheptacyclo[28.8.0.03,8.011,20.014,19.022,27.033,38]octatriaconta-3(8),4,6,22(27),23,25-hexaene-9,28-dione