Discovery of novel 2,4-diarylaminopyrimidine hydrazone derivatives as potent anti-thyroid cancer agents capable of inhibiting FAK
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In this work, thirty 2,4-diarylaminopyrimidine-based hydrazones were designed, synthesised, and their anti-thyroid cancer activity were explored. The majority of compounds exhibit moderate to excellent cytotoxic activity against FAK overexpressing TPC-1 cells, with IC<sub>50</sub> values ranging from 0.113 to 1.460 μM. Among them, compound <b>14f</b> displayed exceptional anti-proliferative effect against TPC-1 cells (IC<sub>50</sub> = 0.113 μM) and potent FAK inhibitory potency (IC<sub>50</sub> = 35 nM). In <i>silico</i> studies indicated that compound <b>14f</b> could well bind to FAK (Focal Adhesion Kinase) and have favourable pharmacokinetic profiles. In addition, compound <b>14f</b> could inhibit the phosphorylation of FAK at Tyr397, Tyr576/577 and Tyr925, and did not affect the expression level of FAK in TPC-1 cells. Compound <b>14f</b> was also effective in inhibiting the proliferation and migration of thyroid cancer cells TPC-1. Thus, these novel 4-arylaminopyrimidine hydrazone derivatives exhibited potent anti-thyroid cancer activities through the inhibition of FAK.
