Cancer is a dangerous disease spreading word wide causing damage to human beings from head to toe. Research work is on full swing with respect to the curing and control of this disease.. An attempt has been made in this book to resolve the problems created by the disease. In this book synthesis of three novel nitrogen heterocyclic compounds has been discussed. Their formula have been characterized using NMR, Mass and IR spectroscopy. DNA cleavage with respect to the synthesized compounds was verified. Partial cleavage of DNA was identified.