2-Fluoro-N-((4aR,6R,7R,8R,8aS)-8-hydroxy-6-methoxy-2,2-dimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl)-5-nitro-benzamide                                                                                                                                                              在
                                                                                                                                                                                 cesium fluoride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以55%的产率得到(1R,11R,12R,14R,19S)-12-methoxy-17,17-dimethyl-6-nitro-2,13,16,18-tetraoxa-10-azatetracyclo[9.8.0.03,8.014,19]nonadeca-3(8),4,6-trien-9-one