This book is designed for undergraduate, postgraduate and researchers of organic chemistry to provide them ready reference regarding the natural abundance and biological importance of azoles i.e. benzoxazoles, benzoxazolones and 1,2,4-triazoles and cyclic amines i.e. piperizines and piperidines. This book contains systematic detailed information regarding the natural abundance of biologically relevant scaffolds i.e. benzoxazoles, benzoxazolones, 1,2,4-triazoles and piperidines. It also includes detailed information about the biological profiles of benzoxazoles, benzoxazolones, 1,2,4-triazoles, and piperidines. I hope this book will be helpful to the students studying the chemistry of these heterocycles as well researcher interested in synthesis and medicinal applications of these scaffolds.