(4-Hydroxy-1,3-benzodioxol-5-yl) 4-methylbenzenesulfonate   、                                                                                      
(1R,2R,7R,8R,9S)-12-bromo-8-hydroxy-14,15-dimethoxy-13-methyl-17-(4-methylphenyl)sulfonyl-6-oxa-3,17-diazatetracyclo[7.7.1.02,7.011,16]heptadeca-3,11,13,15-tetraen-5-one                                                                                                                                                              在
                                                                                                                                                                                 
三氟乙酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以89%的产率得到[7-[(1R,2R,4R,7R,8R,9S)-12-bromo-8-hydroxy-14,15-dimethoxy-13-methyl-17-(4-methylphenyl)sulfonyl-5-oxo-6-oxa-3,17-diazatetracyclo[7.7.1.02,7.011,16]heptadeca-11,13,15-trien-4-yl]-4-hydroxy-1,3-benzodioxol-5-yl] 4-methylbenzenesulfonate