“…The benzimidazole fragment is a frequent motif in recent publications devoted to drug design and molecular diversity oriented synthesis [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. Fused polycyclic derivatives of benzimidazo[1,2- a ] pyrimidines are often cited as anti-cancer and cytotoxic agents [ 10 , 11 , 12 , 13 , 14 ].…”