代谢
Trimebutine 在肝脏中经历广泛的一级代谢。Nortrimebutine(或N-单脱甲基三甲丁)是主要保留对结肠药理活性的代谢物。这种代谢物可以经历第二次N-脱甲基化,形成N-双脱甲基三甲丁。其他主要的尿液代谢物(2-氨基、2-甲基氨基或2-二甲基氨基-2-苯基丁醇)可以通过脱甲基代谢物或三甲丁的酯键的初始水解后的连续N-脱甲基化形成。Trimebutine 也容易发生硫酸盐和/或葡萄糖醛酸结合反应。
Trimebutine undergoes extensive hepatic first-pass metabolism. Nortrimebutine, or N-monodesmethyltrimebutine, is the main metabolite that retains pharmacological activity on the colon. This metabolite can undergo second N-demethylation to form N-didesmethyltrimebutine. Other main urinary metabolites (2-amino, 2-methylamino or 2-dimethylamino-2-phenylbutan-1-ol) can be formed via hydrolysis of the ester bond of desmethylated metabolites or initial hydrolysis of the ester bond of trimebutine followed by sequential N-demethylation. Trimebutine is also prone to sulphate and/or glucuronic acid conjugation.
来源:DrugBank