[(1R,3S,8R,10S,12S,14R,17S,18R,20S)-17-acetyloxy-12-methoxy-10-methyl-2,7,13,19-tetraoxatetracyclo[10.9.0.03,8.014,20]henicosan-18-yl]methyl acetate 在
三乙基硅烷 、
三氟化硼乙醚 作用下,
以
二氯甲烷 、
乙腈 为溶剂,
以90%的产率得到[(1R,3S,8R,10S,12S,14R,17S,18R,20S)-17-acetyloxy-10-methyl-2,7,13,19-tetraoxatetracyclo[10.9.0.03,8.014,20]henicosan-18-yl]methyl acetate