3-(4-piperidinyl)-1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one   、                                                                                      
1-[4-amino-3,5-dibromo-N-[(phenoxy)cyanoiminomethyl]-D-phenylalanyl]-4-(1-methyl-4-piperidinyl)piperazine                                                                                                                                                                                                                                                                                                          以15%的产率得到1-[4-amino-3,5-dibromo-N-[[4-(2,3,4,5-tetrahydro-2(1H)-oxo-1,3-benzodiazepin-3-yl)-1-piperidinyl]cyanoiminomethyl]-D-phenylalanyl]-4-(1-methyl-4-piperidinyl)piperazine