The original work of the present book consists of three research projects: The first project entitled: Application of Mannich and Michael reactions in synthesis of pyridopyrimido 2,1-b] 1,3,5]thiadiazinones and pyridopyrimido 2,1-b] 1,3] thiazinones as anticancer agents.The second project entitled: Synthesis of pyridotriazolopyrimidines as antitumor agents. The third project entitled: Synthesis of Novel Thiadiazole and Pyrazoline Derivatives Bearing...