sodium 10-bromo-5-cyano-11-hydroxy-7-hydroxymethyl-8-methoxy-13-methyl-1,2,3,4,5,7,12,12a-octahydro-1,4-iminoazepino<1,2-b>isoquinoline-2-carboxylate   、                                                                                      
原甲酸三甲酯                                                                                                                                                              在
                                                                                                                                                                                 
thallium(III) nitrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以68.7%的产率得到sodium 10-bromo-5-cyano-8,8-dimethoxy-7-hydroxymethyl-13-methyl-11-oxo-1,2,3,4,5,7,8,11,12,12a-decahydro-1,4-iminoazepino<1,2-b>isoquinoline-2-carboxylate