Discovery of a Novel Class of Potent Human Deoxyuridine Triphosphatase Inhibitors Remarkably Enhancing the Antitumor Activity of Thymidylate Synthase Inhibitors
(dUTPase) has been identified as a promising approach to enhance the efficacy of 5-fluorouracil (5-FU)-based chemotherapy. This study describes the development of a novel class of dUTPase inhibitors based on the structure–activity relationship (SAR) studies of uracil derivatives. Starting from the weak inhibitor 7 (IC50 = 100 μM), we developed compound 26, which is the most potent human dUTPase inhibitor