Esters and lactones of phenolic amino carboxylic acids. Prodrugs for iron chelation
作者:Colin G. Pitt、Y. Bao、J. Thompson、M. C. Wani、H. Rosenkrantz、J. Metterville
DOI:10.1021/jm00157a020
日期:1986.7
The new iron chelator N,N'-bis(2-hydroxyphenyl)ethylenediamine-N,N'-diacetic acid (1), its dilactone 2, N,N'-bis(2-hydroxybenzyl)-2-hydroxypropylene-1,3-diamine-N,N'- diacetic acid (3), and its methyl ester lactone 4 and a series of esters of N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (5) were prepared and their iron chelating efficacy and toxicity determined by using the hypertransfused
新型铁螯合剂N,N'-双(2-羟基苯基)乙二胺-N,N'-二乙酸(1),双内酯2,N,N'-双(2-羟基苄基)-2-羟基丙烯-1, 3-二胺-N,N'-二乙酸(3)及其甲酯内酯4和N,N'-双(2-羟基苄基)乙二胺-N,N'-二乙酸的一系列酯(5)用超输血的铁超负荷小鼠模型制备了它们的铁螯合功效和毒性。将生物学活性与使用高输血大鼠获得的结果进行比较。酯化增强了口服铁螯合活性,但也增加了毒性。5的二异丙酯表现出最高的治疗指数。体外测量表明,在pH 7时酯水解的速率。在5 X 10(-4)M铁离子存在下,5的含量增加10(4)倍,这可能解释了酯和内酯作为前药的效用。筛选了其他十七种螯合剂,但没有腹膜内或口服活性。