(2aR,4R,4aR,8R,11S,12S,12aR,12bS,Z)-12b-acetoxy-4-fluoro-11-hydroxy-4a,8,13,13-tetramethyl-5,9-dioxo-2a,3,4,4a,5,8,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate 在
双(三甲基硅烷基)氨基钾 、 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octanebis(tetrafluoroborate) 作用下,
以
甲苯 、
N,N-二甲基甲酰胺 为溶剂,
以17%的产率得到(2aR,4R,4aR,6S,11S,12S,12aR,12bS)-12b-acetoxy-4,6-difluoro-11-hydroxy-4a,8,13,13-tetramethyl-5,9-dioxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate