Studies in the design of x-ray contrast agents. Synthesis, hydrophobicity, and solubility of some iodoresorcyl bis(.beta.-glucosides)
作者:Frederick L. Weitl、Milos Sovak、Terry M. Williams、Joseph H. Lang
DOI:10.1021/jm00234a001
日期:1976.12
at observed log P octanol approximately 1.5 or lower. Of the new compounds, only 2,4,-6-triiodo-5-N-methylcarboxamidorescorcy bis(beta-glucoside) (6) was highly water soluble. At the physiological pHin dog's plasmia in vitro, compound 6 rapidly hydrolyzed. Poorly water-soluble but more stable compounds of this series were not appreciably absorbed from dog's duodenum.
制备了两个二碘代和两个三碘十二烷基双(β-葡糖苷),并将它们的疏水性(log P octano)和水溶性与三碘苯基β-葡糖苷和几种实验性非离子水溶性X射线造影剂进行了比较。数据表明大体积的亲水性O-β-葡萄糖基取代基与卤素取代基的空间重叠;仅在观察到的log P辛醇约为1.5或更低时才能获得高水溶性。在这些新化合物中,只有2,4,-6-三碘-5-N-甲基羧酰胺基双(β-葡萄糖苷)(6)具有高度水溶性。在体外狗的血浆中的生理pH下,化合物6迅速水解。水溶性差但较稳定的该系列化合物未从狗的十二指肠中明显吸收。