14-[((4-aminomethyl)phenyl)methyl-amino]-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 dihydrochloride 、
tert-butyl (acetamido(methylthio)methylene)carbamate 在
三乙胺 作用下,
以
氯仿 为溶剂,
反应 0.33h,
以73%的产率得到14-[4-[2-(tert-butyloxycarbonyl)-3-acetyl-guanidino-methyl]-benzyl]-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