3β-acetoxy-7α-hydroxy-14α,15α-epoxy-apotirucallane 在
disodium hydrogenphosphate 、
单过氧邻苯二甲酸 作用下,
以
乙醚 为溶剂,
生成 Acetic acid (3S,5R,7R,8R,9R,10S,13S,17S)-17-((S)-1,5-dimethyl-hexyl)-7-hydroxy-4,4,8,10,13-pentamethyl-15-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester