代谢
Avanafil广泛代谢,主要由CYP3A4代谢,其次由CYP2C9代谢。形成了两种主要代谢物,M4和M16,它们在血浆中的浓度分别达到母体化合物的23%和29%。M16代谢物没有药理效果,而M4代谢物对PDE5的抑制效力为Avanafil的18%,约占总观察到的Avanafil药理活性的4%。
Avanafil is extensively metabolized, primarily by CYP3A4 and to a lesser extent by CYP2C9. There are two major metabolites formed, M4 and M16, which exist in the plasma at concentrations 23% and 29% that of the parent compound, respectively. The M16 metabolite lacks pharmacologic effect, but the M4 metabolite has an inhibitory potency for PDE5 18% that of avanafil and accounts for approximately 4% of the observed pharmacologic activity of avanafil.
来源:DrugBank