This document discusses the nomenclature rules for naming heterocyclic compounds. It covers the IUPAC rules for naming heterocycles, including the Hantzsch-Widman system which names compounds based on the heteroatom, ring size, and degree of unsaturation. Examples of heterocyclic compound names are provided to illustrate the nomenclature systems.

1. NOMENCLATURE OF
HETEROCYCLIC COMPOUNDS
Lecture by
S. Mathivanan .,
M.Pharm
Asst Professor
Pharmacy

2. Introduction

6. Classification

7. The IUPAC rules allow Three
nomenclature

8. Hantzsch - Widman
Nomenclature

9. Type of the Hetero-atom

10. Ring size (n)

14. Examples

18. Partial unsaturation