Herein we describe structure–activity relationship (SAR) and metabolite identification (Met-ID) studies that provided insight into the origin of time-dependent inhibition (TDI) of cytochrome P450 3A4 (CYP3A4) by compound 1. Collectively, these efforts revealed that bioactivation of the fluoropyrimidine moiety of 1 led to reactive metabolite formation via oxidative defluorination and was responsible
本文中,我们描述了结构-活性关系(
SAR)和代谢物鉴定(Met-ID)研究,这些研究为化合物1对细胞色素P450 3A4(CYP3A4)的时间依赖性抑制(TDI)的起源提供了见识。总的来说,这些努力揭示了1的
氟嘧啶部分的
生物活化导致经由氧化脱
氟的反应性代谢产物形成,并且是观察到的TDI的原因。我们发现,在1的5-
氟嘧啶的4和6位上进行取代对于改善该TDI是必要的,如化合物19所示。