5-(2,6-dichloro-phenylcarbamoyl)-6,6-dimethyl-3-[4-(4-methyl-piperazin-1-yl)-benzoylamino]-5,6-dihydro-4H-pyrrolo [3,4-c]pyrazole-2-carboxylic acid ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
甲醇   、                                                                                                  
三乙胺                                                                                                                                  作用下,
                                                                                                                                                                                                                            以76%的产率得到N-(2,6-dichlorophenyl)-6,6-dimethyl-3-{[4-(4-methylpiperazin-1-yl)benzoyl]amino}-2,6-dihydropyrrolo[3,4-c]pyrazole-5(4H)-carboxamide