2-methyl-5-oxo-5,6,7,8-tetrahydroimidazo<1,5-c>pyrimidinium iodide 、
二乙烯三胺 以
N,N-二甲基甲酰胺 为溶剂,
以80%的产率得到1-[2-(1-Methyl-1H-imidazol-4-yl)-ethyl]-3-{2-[3-[2-(1-methyl-1H-imidazol-4-yl)-ethyl]-1-(2-{3-[2-(1-methyl-1H-imidazol-4-yl)-ethyl]-ureido}-ethyl)-ureido]-ethyl}-urea