(1R,11S,15R)-4,5-dimethoxy-12,12-dimethyl-6-propan-2-yl-16-oxatetracyclo[9.4.1.01,11.03,8]hexadeca-3,5,7,9-tetraen-15-ol   、                                                                                      
N,N'-硫羰基二咪唑                                                                                                                                                                                              以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以1.16 g的产率得到O-[(1R,11S,15R)-4,5-dimethoxy-12,12-dimethyl-6-propan-2-yl-16-oxatetracyclo[9.4.1.01,11.03,8]hexadeca-3,5,7,9-tetraen-15-yl] imidazole-1-carbothioate