methyl (1S,2S,3R,6R,8R,13S,14R,16R,17S)-10-[tert-butyl(dimethyl)silyl]oxy-16-hydroxy-9,13-dimethyl-3-(3-methylbut-2-enoyloxy)-4,11,15-trioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-9-ene-17-carboxylate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 0.25h,
以46%的产率得到methyl (1S,2S,3R,6R,8R,13S,14R,16R,17S)-10,16-dihydroxy-9,13-dimethyl-3-(3-methylbut-2-enoyloxy)-4,11,15-trioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-9-ene-17-carboxylate