(1R,3Z,7S,9E,11S,17R)-11-hydroxy-7-[(E,1S)-1-hydroxy-3-(2-methyl-1,3-thiazol-4-yl)prop-2-enyl]-13-methylidene-6,21-dioxabicyclo[15.3.1]henicosa-3,9,19-trien-5-one                                                                                                                                                              在
                                                                                                                                                                                 
titanium(IV) isopropylate   、                                                                                                  
叔丁基过氧化氢   、                                                                                                  
L-(+)-酒石酸二异丙酯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以83%的产率得到(1R,7S,8S,10S,12S,15Z,18R)-7-hydroxy-12-[(E,1S)-1-hydroxy-3-(2-methyl-1,3-thiazol-4-yl)prop-2-enyl]-5-methylidene-9,13,22-trioxatricyclo[16.3.1.08,10]docosa-15,19-dien-14-one