“…Considering that pyridine derivatives exhibited preferable antitumor activities against many cancer cells by inhibiting ATX and EGFR, 170 they attempted to introduce tetrahydropyrido [4,3-d]pyrimidines, such as 6-chloro-5,6,7,8-tetrahydropyrido [4,3d]pyrimidine (51), instead of the cyclopropanecarbonyl moiety, which is unessential for PARP inhibition, to obtain a series of novel dual PARP/EGFR inhibitors, 52a−52j (Figure 26). 168 In addition, A. Abbas's team employed thiadiazine and triazole as twin drugs against PARP-1 and EGFR by considering that some triazole-and thiadiazine-based compounds, such as 53a, exhibited promising EGFR and PARP-1 inhibition. Then, a series of compounds, 53b−53m, were obtained (Figure 26).…”