1-[(3-{4-Hydroxy-3,5-bis[(125i)iodo]phenyl}propanoyl)oxy]pyrrolidine-2,5-dione 、 (2S)-3-amino-2-[[2-[2-[carboxymethyl-[2-oxo-2-(4-sulfamoylanilino)ethyl]amino]ethyl-[2-oxo-2-(4-sulfamoylanilino)ethyl]amino]acetyl]amino]propanoic acid 在
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以27%的产率得到(2S)-2-[[2-[2-[carboxymethyl-[2-oxo-2-(4-sulfamoylanilino)ethyl]amino]ethyl-[2-oxo-2-(4-sulfamoylanilino)ethyl]amino]acetyl]amino]-3-[3-(4-hydroxy-3,5-diiodophenyl)propanoylamino]propanoic acid