[Synthesis and antitumor activities of pyrimidines].

Objective: To synthesize cyclin-dependent kinase (CDKs) inhibitors and assay their antitumor activities.

Methods: A series of pyrimidines containing different arylamino and 1-(methylsulfonyl)piperidin moieties were designed by combining the segments 1-(methylsulfonyl)piperidin and pyrimidine heterocycles according to the super-position principle of the reinforcement of biological activities.

Results: Their structures were characterized by MS and 1H NMR spectra and all the synthesized compounds were screened for their antimicrobial activity with MTT assay.

Conclusion: The preliminary bioassay showed that compound 3 b displayed good antitumor activity (IC(50)=13.6 µmol/L). The preliminary structure activity relationship analysis of these analogues suggest that the steric factor may have important impact on the anti-tumor activity.