乙酸酐   、                                                                                      
rac-(1R,2R,3S,4R,4aS,14aR)-1-((benzyloxy)methyl)-2-bromo-3-hydroxy-2,3,4,4a,7,8,13,13b,14,14a-decahydro-1,4-epoxyindolo[2',3':3,4]pyrido[1,2-b]isoquinolin-5(1H)-one                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 5.0h,
                                                                                                                以5 mg的产率得到rac-(1R,2R,3S,4R,4aS,14aR)-1-((benzyloxy)methyl)-2-bromo-5-oxo-1,2,3,4,4a,5,7,8,13,13b,14,14a-dodecahydro-1,4-epoxyindolo[2',3':3,4]pyrido[1,2-b]isoquinolin-3-yl acetate