[(2S,3S,4E,6S)-6-[(2R)-2-[(3R)-5-[(1S,3S)-1-(4-bromophenyl)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]pentoxy]-3-[tert-butyl(dimethyl)silyl]oxypentanoyl]oxy-3-[tert-butyl(dimethyl)silyl]oxypropyl]-2-hydroxy-4-(2-methoxy-2-oxoethylidene)-2-[(E)-2-methyl-5-oxopent-3-en-2-yl]oxan-3-yl] octanoate 在
氟化氢吡啶 作用下,
以
四氢呋喃 为溶剂,
反应 5.5h,
以83%的产率得到[(1S,3E,5S,9S,11S,15R,19R,21S,23E,24S)-11-(4-bromophenyl)-1,15-dihydroxy-19-(hydroxymethyl)-23-(2-methoxy-2-oxoethylidene)-2,2-dimethyl-17-oxo-6,12,18,25,26-pentaoxatricyclo[19.3.1.15,9]hexacos-3-en-24-yl] octanoate