Acetic acid (E)-(2S,5S,6S,13S)-13-(tert-butyl-dimethyl-silanyloxy)-17-(tert-butyl-dimethyl-silanyloxymethyl)-6-methyl-tricyclo[13.2.2.02,6]nonadeca-1(18),9,15(19),16-tetraen-5-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
臭氧   、                                                                                                  sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
二氯甲烷   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.05h,
                                                                                                                以82%的产率得到Acetic acid (1S,2S,3S)-3-[4-[(S)-2-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-pentyl]-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-2-(3-hydroxy-propyl)-2-methyl-cyclopentyl ester