在
                                                                                                                                                                                 
三乙基硼氢化锂                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以42%的产率得到(4E,6E,14Z,16E,19E)-(1R,9S,11S,13S,21S,23S,24S)-11-(tert-Butyl-dimethyl-silanyloxy)-24-(tert-butyl-dimethyl-silanyloxymethyl)-23-(2-hydroxy-ethyl)-15,24-dimethyl-2,22,26-trioxa-tricyclo[19.3.1.1
9,13]hexacosa-4,6,14,16,19-pentaen-3-one