methyl 17-methyl-4,6-dioxo-5,8-diphenyl-5,16,17-triazapentacyclo[7.6.1.12,8.03,7.012,16]heptadeca-1(15),9,11,13-tetraene-11-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 
对甲苯磺酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                                                        以81%的产率得到methyl 4,6-dioxo-5,8-diphenyl-5,16-diazatetracyclo[7.6.1.03,7.012,16]hexadeca-1(15),2,7,9,11,13-hexaene-11-carboxylate