(2E,8Z)-(4R,5R,10S,11S,12R)-5,11-Bis-(4-methoxy-benzyloxy)-4,10,12-trimethyl-13-oxo-trideca-2,8-dienoic acid ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium hexamethyldisilazane   、                                                                                                  
二异丁基氢化铝                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 (2E,8Z,13Z,21Z)-(4R,5R,10S,11S,12S,17R,18S,19S,20S)-19-(tert-Butyl-dimethyl-silanyloxy)-5,11,17-tris-(4-methoxy-benzyloxy)-4,10,12,18,20-pentamethyl-tetracosa-2,8,13,21,23-pentaen-1-ol