36 new compounds with the typical skeleton of 4-anilino-5-vinyl/ethynyl pyrimidine, 4-anilino- 3-cyano-5-vinyl/ethynyl/phenyl pyridine, and m-amino-N-phenylbenzamide, are designed, synthesized and selectively tested on EGFR, ErbB-2 kinases, and A-549, HL60 cells growth inhibition. Results from the bioactivity and chemical structures yield preliminary structure– activity relationships (SARs). The most potent 5-ethynylpyrimidine derivative 20a has an ...