4-[2-(2-Benzyloxycarbonylamino-acetylamino)-2-butylcarbamoyl-ethyl]-thiobenzimidic acid methyl ester; hydriodide 在
ammonium acetate 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以65%的产率得到{[1-Butylcarbamoyl-2-(4-carbamimidoyl-phenyl)-ethylcarbamoyl]-methyl}-carbamic acid benzyl ester; hydriodide