A series of acylthioureas were designed and synthesized as Plk1 inhibitors.
Compounds with halogen in sulfamoylphenyl group showed better binding affinities.
The best compound 3v binds to Plk1 PBD with a Kd of 2.3 ± 0.1 μM.
Compound 3v also inhibits the kinase activity of full-length Plk1.