[(1S,3R,4S,5R,6S,8S,9S,11R,12R)-5,6,12-trihydroxy-11-(methoxymethoxy)-9,13,16,16-tetramethyl-8-[(2-methylpropan-2-yl)oxy]-15-oxo-2-oxatetracyclo[10.3.1.01,3.04,9]hexadec-13-en-5-yl]methyl 4-methylbenzenesulfonate                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以98%的产率得到(1S,3R,4S,5R,6S,8S,9S,11R,12R)-6,12-dihydroxy-11-(methoxymethoxy)-9,13,16,16-tetramethyl-8-[(2-methylpropan-2-yl)oxy]spiro[2-oxatetracyclo[10.3.1.01,3.04,9]hexadec-13-ene-5,2'-oxirane]-15-one