14-[4-amino-butyl]-6,7,9,10,13,14,15,16,18,19,21,22-dodecahydro-12H-5,8,11,17,20,23-hexaoxa-14-aza-benzocyclohenicosene-2,3-dicarboxylic acid dimethyl ester dihydrochloride 、
N,N'-二环己基碳二亚胺 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
反应 0.5h,
以62%的产率得到14-[4-[2,3-di-cyclohexyl-guanidino]-butyl]-6,7,9,10,13,14,15,16,18,19,21,22-dodecahydro-12H-5,8,11,17,20,23-hexaoxa-14-aza-benzocycloheneicosene-2,3-dicarboxylic acid dimethyl ester