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Principles of Organic Medicinal Chemistry is concerned with chemistry, synthesis, structure activity relationships, properties and uses of drugs of carbon compounds. This book has primarily been written with the aim of meeting the needs and interests of undergraduate and graduate pharmacy course according to syllabi of various Indian Universities. The book is a concise form covering all newer drugs will help the readers to a great extent.
Though several books are available on medicinal chemistry, the material in most of them is present in a diffused form or highly specialized. In the ever expanding knowledge of the chemistry of drugs it is very difficult to go through the various textbooks, journals, and pharmacopoeias. The major objective of writing this book is to present the information in a lucid, condensed and cohesive form, to cater specially the needs of undergraduate and graduate students of pharmacy.

It is impossible to express my indebtedness to those authors of various books, articles and monographs mentioned in bibliography, which became a major source of information for writing this text. I wish to recall my gratitude to Sri Y.V. Anjaneyulu, Chairman, Chalapathi Education Society, Guntur, members of Siddhartha Academy, Vijayawada, staff members of Chalapathi Institute of Pharmaceutical Sciences, Guntur, and Principal and staff members of KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada for their kind cooperation. I am also wish to acknowledge indebtedness to all who have assisted with the completion of the book.

The cooperation of publishers, Messrs New Age International (P) Limited and publishers is very much appreciated in bringing out this book. The contribution that I received by sustained cooperation of my wife and daughter cann’t be ignored. I have made every effort to avoid printing errors. However, despite best efforts, some might have crept in inadvertently. I shall be oblished if these are brought to my notice. Constructive suggestions, comments and criticism on the subject matter of the book will be gratefully acknowledged, as they will certainly help to improve future editions of the book.

It is hoped that the book will be received favorably as an effective text book by both students and teachers of pharmacy, science and medical scientists. The subject of medicinal chemistry explains the design and production of compounds that can be used for the prevention, treatment or cure of human and animal diseases. Medicinal chemistry includes the study of already existing drugs, of their biological properties and their structure-activity relationships. Medicinal chemistry was defined by IUPAC specified commission as “it concerns the discovery, the development, the identification and the interpretation of the mode of action of biologically active compounds at the molecular level”. Medicinal chemistry is the application of chemical research techniques to the synthesis of pharmaceuticals.

During the early stages of medicinal chemistry development, scientists were primarily concerned with the isolation of medicinal agents found in plants. Today, scientists in this field are also equally concerned with the creation of new synthetic compounds as drugs. Medicinal chemistry is almost always geared toward drug discovery and development. Medicinal chemists apply their chemistry training to the process of synthesizing new pharmaceuticals. They also work on improving the process by which other pharmaceuticals are made. Most chemists work with a team of scientists from different disciplines, including biologists, toxicologists, pharmacologists, theoretical chemists, microbiologists, and biopharmacists.