ChemInform Abstract: A New and Efficient ZnCl2‐Catalyzed Synthesis and Biological Evaluation of Novel 2‐Amino‐3, 5‐dicyano‐4‐aryl‐6‐aryl‐aminopyridines as Potent Antibacterial Agents Against Helicobacter pylori (HP). Issue 6 (21st January 2016)