(R)-3-(4-amino-3,5-dibromo-phenyl)-2-{[4-(2-oxo-1,2,4,5-tetrahydro-benzo[d][1,3]diazepin-3-yl)-piperidin-1-carbonyl]-amino}-propionic acid 、
4,5-dichloro-N-(3-dimethylaminopropyl)-benzene-1,2-diamine 在
对甲苯磺酸 作用下,
以18%的产率得到4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidin-1-carboxylic acid {(R)-2-(4-amino-3,5-dibromo-phenyl)-1-[5,6-dichloro-1-(3-dimethylaminopropyl)-1H-benzimidazol-2-yl]-ethyl}-amide p-toluenesulphonic acid salt