代谢
尿液中发现的主要代谢物是活性4'-O-单脱甲基异特拉菲林(M1)。异特拉菲林主要通过CYP1A1、CYP3A4和CYP3A5代谢。CYP1A2、CYP2B6、CYP2C8、CYP2C9、CYP2C18和CYP2D6也在一定程度上参与了异特拉菲林的代谢。其他已识别的代谢物包括1-β-羟基化-4'-O-脱甲基异特拉菲林(M2)、3',4'-O-二脱甲基异特拉菲林(M3)、M1硫酸结合物(M4)、M1葡萄糖苷酸(M5)、1-β-羟基化异特拉菲林(M8)和氢化M3(M10)。
The primary metabolite found in urine is the active 4'-O-monodesmethyl istradefylline (M1). Istradefylline is metabolized mainly by CYP1A1, CYP3A4, and CYP3A5. CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C18, and CYP2D6 also partly contribute the the metabolism of istradefylline. Other identified metabolites are 1-β-hydroxylated-4’-O-demethyl istradefylline (M2), 3’,4’-O-didemethyl istradefylline (M3), M1 sulfate conjugate (M4), M1 glucuronide (M5), 1-β-hydroxylated istradefylline (M8) and hydrogenated M3 (M10).
来源:DrugBank