A process for the preparation of iosimenol comprising reacting 5,5′-[(1,3-dioxo-1,3-propanediyl)diimino]bis[N-(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxamide] (C-VI) with a 3-halo-1,2-propanediol in an aqueous solvent. A process for the preparation of C-VI comprising reacting 3,3′4(1,3-dioxo-1,3-propanediyl)diimino]bis[5-(aminocarbonyl)-2,4,6-triiodobenzoyl chloride] (C-V) with 3-amino-1,2-propanediol in the presence of an inorganic base and a suitable non-aqueous polar solvent. A process for the preparation of C-V comprising reacting 3-amino-5-(aminocarbonyl)-2,4,6-triiodobenzoyl chloride (C-IV) with malonyl dichloride in a solvent comprising a suitable ester solvent, a suitable nitrile solvent or mixtures thereof.
                            一种制备伊欧西米诺尔的方法,包括将5,5'-[(1,3-二氧代-
1,3-丙二醇基)二
亚胺基]双[N-(2,3-二羟基丙基)-2,4,6-三
碘-1,3-苯二甲酰胺](C-VI)与3-卤代-
1,2-丙二醇在
水溶剂中反应。一种制备C-VI的方法,包括在
无机碱和适宜的非
水极性溶剂存在下,将3,3'-[4-(1,3-二氧代-
1,3-丙二醇基)二
亚胺基]双[5-(
氨基甲酰基)-2,4,6-三
碘苯甲酰氯](C-V)与
3-氨基-1,2-丙二醇反应。一种制备C-V的方法,包括在适宜的酯溶剂、适宜的腈溶剂或其混合物溶剂中,将3-
氨基-5-(
氨基甲酰基)-2,4,6-三
碘苯甲酰氯(C-IV)与丙二酰二
氯在一起反应。