作者:Wayne T. Stolle、Lindsay S. Stelzer、Jackson B. Hester、Salvatore C. Perricone、Richard S. P. Hsi
DOI:10.1002/jlcr.2580341006
日期:1994.10
Ibutilide fumarate, racemic N-[4-[4-(ethyl-n-heptylamino)-1-hydroxybutyl]phenyl]methanesulfonamide hemifumarate, and artilide, the R-(+)-enantiomer of N-[4-[4-(di-n-butylalmino)-1-hydroxybutyl]-phenyl]methanesulfonamide hemifumerate, are under clinical investigation as Class III antiarrhythmic agents. For conducting drug disposition studies, we synthesized carbon-14 labeled ibutilide, as well as its two enantiomeric forms. In addition, high specific activity tritium labeled ibutilide was also prepared to facilitate development of a radioimmunoassay and for studying receptor site characteristics of this agent. Results of metabolism studies with [14C]ibutilide led us to prepare tritium labeled artilide, which is more readily accessible than the C-14 labeled drug. The optical antipode of artilide was also labeled with tritium for comparative drug disposition investigations on the two enantiomers.
富马酸伊布利特、外消旋 N-[4-[4-(乙基-正庚氨基)-1-羟基丁基]苯基]甲磺酰胺半富马酸盐和阿替利特,N-[4-[4-(二正丁基氨基)-1-羟基丁基]-苯基]甲磺酰胺半富马酸盐,作为 III 类抗心律失常药物正在进行临床研究。为了进行药物处置研究,我们合成了碳 14 标记的伊布利特及其两种对映体形式。此外,还制备了高比活性氚标记的伊布利特,以促进放射免疫测定的开发和研究该药物的受体位点特征。 [14C]伊布利特的代谢研究结果使我们制备了氚标记的阿替利特,它比 C-14 标记的药物更容易获得。阿替利特的光学对映体也用氚标记,用于两种对映体的比较药物分布研究。