3β-acetoxy-dammara-20,24-diene 在
间氯过氧苯甲酸 作用下,
以
二氯甲烷 为溶剂,
生成
Acetic acid (3S,5R,8R,9R,10R,13R,14R,17S)-17-[3-((S)-3,3-dimethyl-oxiranyl)-1-methylene-propyl]-4,4,8,10,14-pentamethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 、 [(3S,5R,8R,9R,10R,13R,14R,17S)-17-[4-[(2R)-3,3-dimethyloxiran-2-yl]but-1-en-2-yl]-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,12,13,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate