Studies on the metabolism of atenolol. Characterization and determination of a new urinary metabolite in the rat.
作者:YASUHIKO MATSUKI、TOMIHARU ITO、SAKAE KOMATSU、TOSHIO NAMBARA
DOI:10.1248/cpb.30.196
日期:——
The characterization and quantitation of a new urinary metabolite, M2, from rats orally given atenolol, a β-adrenergic blocking drug, are described. 4-(2-Hydroxy-3-isopropylaminopropoxy) phenylglyoxylic acid amide was synthesized as an authentic sample by an unequivocal route. The structure of M2 was definitively established by direct comparison with the synthetic specimen. Determination of M2 in urine was achieved by means of selected ion monitoring (SIM) using [3H6]-atenolol as an internal standard. The amount of M2 excreted in urine was estimated to be 1.04% of the dose.
本文描述了口服β肾上腺素能阻断药物阿替洛尔的大鼠尿液中一种新代谢物M2的特征和定量。4-(2-Hydroxy-3-isopropylaminopropoxy) phenylglyoxylic acid amide 是通过明确的途径合成的真实样品。通过与合成样本直接比较,最终确定了 M2 的结构。以[3H6]-阿替洛尔为内标,通过选择离子监测(SIM)法测定了尿液中的 M2。尿液中排出的 M2 量估计为剂量的 1.04%。