4-Amino-2-Aryl-3-Cyano-1,2-Dihydropyrimido-[1,2-a]Benzimidazoles AND their Pyrimidine Analogs as New Anticancer Agents
A multicomponent condensation between 2-aminobenzimidazole, malononitrile, and an aryl or heteroaryl aldehyde was used for the synthesis of 4-amino-2-aryl-3-cyano-1,2-dihydropyrimido-[1,2-a]benzimidazoles. In addition, a new method of synthesis of the corresponding pyrimido-[2,1-a]benzimidazole derivatives was developed. These syntheses were used to prepare a library of 4-amino-2-aryl-3-cyano-1,2-dihydropyrimido[1,2-a]benzimidazoles and their corresponding pyrimido-[2,1-a]benzimidazole derivatives. This library of compounds was then tested against pancreatic and breast cancer cell lines. A number of compounds were found to possess notable anticancer activity.