tert-butyl N-[(5S,9R,10R,13R,14S)-18-[tert-butyl(dimethyl)silyl]oxy-10-hydroxy-7,7,13,14-tetramethyl-16-oxo-6,8,15-trioxatricyclo[15.4.0.05,9]henicosa-1(17),2,11,18,20-pentaen-20-yl]-N-[(2,2-dimethyl-1,3-dioxolan-4-yl)methyl]carbamate 在
吡啶 、
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以94%的产率得到tert-butyl N-[(5S,9S,13R,14S)-18-[tert-butyl(dimethyl)silyl]oxy-7,7,13,14-tetramethyl-10,16-dioxo-6,8,15-trioxatricyclo[15.4.0.05,9]henicosa-1(17),2,11,18,20-pentaen-20-yl]-N-[(2,2-dimethyl-1,3-dioxolan-4-yl)methyl]carbamate