Medicinal Chemistry for Pharmacy Students

Medicinal Chemistry for Pharmacy Students

Volume: 1

Fundamentals of Medicinal Chemistry and Drug Metabolism

The primary objective of this 4-volume book series is to educate PharmD students on the subject of medicinal chemistry. The book set serves as a reference guide to pharmacists on aspects of chemical ...
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Drug Metabolism

Pp. 188-280 (93)

Rahmat Talukder, Ashok Philip and M. O. Faruk Khan


This chapter is a detailed account of drug metabolism, prodrugs and related terminology that are critical knowledge base for pharmacist and pharmacy education. After study of this chapter, students will be able to: • Comprehend the fundamental concepts of drug metabolism • Describe the significance of drug metabolism • Identify key enzymes involved and the sites of drug metabolism • Explain phase I and phase II metabolic pathways, including: ♦ Phase I (Functionalization) - Oxidation of aromatic moieties, olefins, benzylic & allylic C atoms and α-C of C=O and C=N, aliphatic and alicyclic C, C-heteroatom system, C-N (N-dealkylation, Noxide formation, N-hydroxylation), C-O (O-dealkylation), C-S (S-dealkylation, Soxidation, desulfuration), alcohols and aldehydes, and miscellaneous oxidative reactions - Reduction of aldehydes and ketones, Nitro and azo compounds, and miscellaneous reductive metabolisms - Hydrolytic reactions of esters and amides, epoxides and arene oxides by epoxide hydrase ♦ Phase II (Conjugation) - Glucuronic acid conjugation, sulfate conjugation, glycine and other amino acid, glutathione or mercapturic acid, acetylation, methylation - Define and differentiate between prodrug, soft drug and antedrugs - Discuss metabolic routes of some individual drugs


Antedrug, Conjugation, Drug interactions, Drug metabolism, Enterohepatic circulation, First pass effect, Phase I metabolism, Phase II metabolism, Prodrug, Soft drug.


Department of Pharmaceutical Sciences and Research, Marshall University School of Pharmacy, Huntington, WV, USA.