代谢
硫酸化似乎是这种药物的主要代谢途径。其他代谢途径包括还原、甲基化和葡萄糖醛酸化。奥皮卡朋经历N-氧化物还原生成BIA 9-1079,这是一种活性代谢物,在猴子中是主要的代谢物,但在大鼠和小鼠中则不那么重要。在人类中,这种代谢物是不可检测的。然而,人类的代谢产生了一种无活性的代谢物_BIA 9-1103_,这是3-O-硫酸化的结果,以及BIA 9-1104,这是4-O-甲基化的结果。BIA 9-1103已在小鼠、大鼠和猴子的样本中测量,而BIA 9-1104在微型猪、大鼠和小鼠样本中以微不足道的量检测到,因此没有独特的 human 代谢物存在,而且所有代谢物至少可以在一种非临床物种中检测到。有两种代谢物被研究认为具有显著性,即BIA 9-1079和BIA 9-1103。
Sulphation appears to be the main metabolic pathway for this drug. Other metabolic pathways include reduction, methylation, and glucuronidation. Opicapone undergoes N-oxide reduction to BIA 9-1079, an active metabolite, and this is the main metabolite in monkeys, and is less significant in rats and mice however. In humans, this metabolite is not detectable. However, human metabolism results in an an inactive metabolite _BIA 9-1103_, the result of 3-O-sulphation, and BIA 9-1104, the result of 4-O-methylation. BIA 9-1103 has been measured in mouse, rat and monkey samples, and BIA 9-1104 detected in negligible amounts in the mini-pig, rat and mouse samples, and therefore no unique human metabolites are present and all can be detected in at least one of the non-clinical species. Two have been examined with significance, BIA 9-1079 and BIA 9-1103.
来源:DrugBank