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ID: ALA4266039
Journal: J Med Chem
Title: Overcoming Time-Dependent Inhibition (TDI) of Cytochrome P450 3A4 (CYP3A4) Resulting from Bioactivation of a Fluoropyrimidine Moiety.
Authors: Mandal M, Mitra K, Grotz D, Lin X, Palamanda J, Kumari P, Buevich A, Caldwell JP, Chen X, Cox K, Favreau L, Hyde L, Kennedy ME, Kuvelkar R, Liu X, Mazzola RD, Parker E, Rindgen D, Sherer E, Wang H, Zhu Z, Stamford AW, Cumming JN.
Abstract: 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 for the observed TDI. We discovered that substitution at both the 4- and 6-positions of the 5-fluoropyrimidine of 1 was necessary to ameliorate this TDI as exemplified by compound 19.
CiteXplore: 30388368