[(2R,6S,7S,8S,10R,13S,14R,15S,16S,18S)-13-acetyloxy-8,16,18-trihydroxy-4-(4-methoxyphenyl)-7,19,20,20-tetramethyl-3,5,11-trioxapentacyclo[14.3.1.02,6.07,14.010,13]icos-1(19)-en-15-yl] benzoate 在
吡啶 、
氢氟酸 、
sodium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
生成 [(2R,6S,7S,8S,10R,13S,14R,15S,16S,18S)-13-acetyloxy-18-[(2R,3R)-3-(furan-2-yl)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]oxy-8,16-dihydroxy-4-(4-methoxyphenyl)-7,19,20,20-tetramethyl-3,5,11-trioxapentacyclo[14.3.1.02,6.07,14.010,13]icos-1(19)-en-15-yl] benzoate