[(1R,4S,8R,9R,10R,12S,13S,16S,18S)-10-acetyloxy-6-formyl-7,9,13-trimethyl-8-trimethylsilyloxy-5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosa-2,6-dien-16-yl] acetate 、 在
potassium fluoride 作用下,
以
异丙醇 为溶剂,
反应 12.0h,
以68%的产率得到acetic acid 2-acetoxy-8-[1-hydroxy-2-nitro-2-(2,2,4-trimethyl-[1,3]dioxolan-4-yl)-ethyl]-4a,6a,7-trimethyl-6b-trimethylsilanyloxy-2,3,4,4a,4b,5,6,6a,6b,9a,10b,11,12,12a-tetradecahydro-1H-9-oxa-pentaleno[2,1-a]phenanthren-6-yl ester