Studies on Absorption, Biotransformation and Excretion of Drug.(1). Metabolites of Clofexamide in Rat
作者:OSAMU IRINO、MITSURU TATEISHI、KAZUNAGA FUKAWA
DOI:10.1248/cpb.20.47
日期:——
The metabolites of clofexamide (2-(p-chlorophenoxy)-N-(2-diethylaminoethyl)-acetamide)(I) have been investigated in rat urine and feces. When rats were given a single 200mg/kg dose of clofexamide (I), thirteen metabolites were found in the urine and only unchanged clofexamide in the feces. Twelve metabolites were identified by their spectrometric data (infrared (IR), mass spectrum, ultraviolet (UV) and nuclear magnetic resonance (NMR) spectra) and by thin-layer chromatography (TLC). The following compounds were found to be present in the urine: unchanged clofexamide (I), 2-(p-chlorophenoxy)-N-(2-diethylaminoethyl) acetarnide N-oxide (II), 2-(p-chlorophenoxy)-N-(2-ethylaminoethyl) acetamide (III), 2-(p-chlorophenoxy)-N-(2-aminoethyl) acetamide (IV), p-chlorophenoxyacetic acid (V), p-chlorophenoxyaceturic acid (VI), 2-(4-chloro-3-hydroxyphenoxy)-N-(2-diethylaminoethyl) acetamide (VII), its glucuronide (VIII), 2-(4-chloro-2-hydroxyphenoxy)-N-(2-diethylaminoethyl) acetamide (IX), 2-(4-chloro-3-hydroxyphenoxy)-N-(2-ethylaminoethyl) acetamide (X), its glucuronide (XI) and 2-(4-chloro-2-hydroxyphenoxy)-N-(2-ethylaminoethyl) acetamide (XII).
已在大鼠尿液和粪便中研究了氯苯酰胺 (2-(对氯苯氧基)-N-(2-二乙氨基乙基)-乙酰胺)(I) 的代谢物。当给予大鼠单次200mg/kg剂量的氯苯磺酰胺(I)时,在尿液中发现13种代谢物,而在粪便中仅发现未变化的氯苯磺酰胺。通过光谱数据(红外 (IR)、质谱、紫外 (UV) 和核磁共振 (NMR) 光谱)和薄层色谱 (TLC) 鉴定了 12 种代谢物。尿液中发现以下化合物:未变化的氯苯磺酰胺 (I)、2-(对氯苯氧基)-N-(2-二乙氨基乙基)乙脒 N-氧化物 (II)、2-(对氯苯氧基)-N -(2-乙基氨基乙基)乙酰胺(III)、2-(对氯苯氧基)-N-(2-氨基乙基)乙酰胺(IV)、对氯苯氧基乙酸(V)、对氯苯氧基乙酰酸(VI)、2-( 4-氯-3-羟基苯氧基)-N-(2-二乙氨基乙基)乙酰胺(VII)、其葡糖苷酸(VIII)、2-(4-氯-2-羟基苯氧基)-N-(2-二乙氨基乙基)乙酰胺(IX) 、2-(4-氯-3-羟基苯氧基)-N-(2-乙基氨基乙基)乙酰胺(X)、其葡糖苷酸(XI)和2-(4-氯-2-羟基苯氧基)-N-(2-乙基氨基乙基)乙酰胺(XII)。