代谢
Piperaquine 经历 N-脱烷基化,将其脂肪族桥从一个含氮环上分离。产生的醛然后被氧化成羧酸,形成代谢物 1(M1)。同一个含氮环也可以在两个位点之一发生羟基化,形成 M3 或 M4。M2 是通过分子两侧喹啉组中一个氮的 N-氧化形成的。当这两个氮都被氧化时,形成 M5。M1 和 M2 是主要的代谢产物。这些代谢物都在尿液中观察到。
Piperaquine undergoes N-dealkylation, separating its aliphatic bridge from one of the nitrogen-containing rings. The resulting aldehyde is then oxidized to a carboxylic acid to form metabolite 1 (M1). The same nitrogen-containing rings can also undergo hydroxylation at one of two sites to form M3 or M4. M2 is formed via N-oxidation of one of the nitrogens in the quinoline groups at either side of the molecule. M5 results when both of these nitrogens are oxidized. M1 and M2 are the major metabolism products. Each of these metabolites were observed in the urine.
来源:DrugBank