This book examines and evaluates the strategies utilized to design and synthesize pharmaceutically active agents.  Significant updates over the last 10 years since the publication of the 1^st edition include synthesis of enantiomerically pure isomers, novel chemical methodologies, and new pharmaceutical agents targeted at novel biological endpoints. Written by an experienced successful author, this book meets the needs of a growing community of researchers in pharmaceutical R &D, as well as medical professionals, by providing a useful guide for designing and synthesizing pharmaceutical agents.  Additionally, it is a useful text for medicinal chemistry students.