11β,19-oxido-9β,10α-androsta-5,7-dien-3β,17β,19-triol-3-acetate 17-trimethylacetate                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 0.33h,
                                                                                                                以0.9 mg的产率得到[(1R,4S,6S,7S,10S,16S,19R)-16-hydroxy-6-methyl-3-oxapentacyclo[9.7.1.01,14.04,19.06,10]nonadeca-11,13-dien-7-yl] 2,2-dimethylpropanoate