2-[4-(4-aminobutyl)phenoxy]-N,N-dimethylacetamide 、
methyl 3,5-diamino-6-chloropyrazine-2-carbonylcarbamimidothioate hydroiodic acid salt 在
crude residue 、
水 、 silica gel 、
methanol-dichloromethane 作用下,
以
乙醇 为溶剂,
反应 3.5h,
以v/v) to give 2-(4-{4-[N′-(3,5-diamino-6-chloropyrazine-2-carbonyl)guanidino]butyl}-phenoxy)-N,N-dimethylacetamide as a yellow solid (35 mg, 28% yield)的产率得到2-(4-{4-[N'-(3,5-diamino-6-chloropyrazine-2-carbonyl)guanidino]-butyl}phenoxy)-N,N-dimethylacetamide