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