diphenylmethyl 7-acetoxymethyl-5-cyano-8,11-dioxo-10-methoxy-13-methyl-1,2,3,4,5,7,8,11,12,12a-decahydro-1,4-iminoazepino<1,2-b>isoquinoline-2-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 
苯甲醚   、                                                                                                  
三氟乙酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以77.3%的产率得到7-acetoxymethyl-5-cyano-8,11-dioxo-10-methoxy-13-methyl-1,2,3,4,5,7,8,11,12,12a-decahydro-1,4-iminoazepino<1,2-b>isoquinoline-2-carboxylic acid