This book provides an update on heterocyclic compounds that serve as key components of anti-cancer agents administered in pre-clinical settings. Many of the compounds highlighted in the book are being actively investigated for the bioactive properties against a range of cancer cell lines. There is potential for heterocyclic compounds to design agents that can target specific molecules to treat different types of cancers. Chapters are contributed by experts in pharmaceutical chemistry and are written to give a general overview of the topic to readers involved in all levels of research and decision-making in pharmaceutical chemistry and anti-cancer drug design. Part 2 of the book set covers these topics: - Anticancer targets for heterocyclic lead compounds - Coumarin hybrids for cancer treatments - Progress in nitrogen and sulphur-based heterocyclic compounds for their anticancer activity - Imidazole as an anticancer heterocyclic ring - Morpholine for profiling anticancer lead compounds - Natural products as anticancer agents