{6-[2-(3-Methoxy-bicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)-ethyl]-7-vinyl-1,4-dioxa-spiro[4.4]non-6-yl}-methanol                                                                                                                                                                                              以
                                                                                         
邻二氯苯                                                                                  为溶剂,
                                                                                                                                                                                        以75%的产率得到((8R,9S,13S,14S)-3-methoxy-6,8,9,11,12,14,15,16-octahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-13(7H)-yl)methanol