Abstract

Natural products are in the form of primary and secondary metabolites and are isolated chemical compounds or substances from living organisms. Terpenes, Phenolic compounds, and Nitrogen-containing compounds are secondary metabolites. The biosyntheses of secondary metabolites are derived from primary metabolism pathways, which consist of a tricarboxylic acid cycle (TCA), methylerythritol phosphate pathway (MEP), mevalonic and shikimic acid pathway. This chapter provides an overview of the diversity of secondary metabolites in plants, their multiple biological functions, and multi-faceted cultural history.

Highlights

  • Natural products are lead compounds, which are frequently produced by plants and microbes as their secondary metabolites, and securing large quantities of such compounds for industrial and clinical applications has been a persisting problem [1]

  • Chemistry of natural product is produced by the pathway of primary or secondary metabolism [3]

  • Monoterpenes originate from one molecule DMAPP and one molecule IPP that are joined in most cases head-to-tail, yielding all- trans geranyl diphosphate (GPP) (Figure 3)

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Summary

Introduction

Natural products are lead compounds, which are frequently produced by plants and microbes as their secondary metabolites, and securing large quantities of such compounds for industrial and clinical applications has been a persisting problem [1]. Natural products (chemical compounds or substances) are isolated from living organisms [2]. Chemistry of natural product is produced by the pathway of primary or secondary metabolism [3]. Metabolism is used to describe all chemical reactions which include maintaining the living state of cells of an organism [4]. The leaf, stem, root, or bark of the plant has plant secondary metabolites that have been produced, for example Alkaloids, Tannins, Flavonoids, and Phenolic compounds [6]. Plant secondary metabolites are exclusively produced by more than 30,000 different plants. They serve as defense compounds against pathogens and herbivores, as flower pigments that attract pollinators. Natural products have a strong impact on human culture and are used throughout human history as pigments, condiments, and pharmaceuticals [8]. We provide an overview of the biosynthesis of natural products, their multiple biological functions and multi-faceted cultural history

Classification of plants secondary metabolite
Monoterpenes
Sesquiterpenes
Diterpenes
Saponins
Tetraterpenes
Alkaloids
Glucosinolates
Cyanogenic glycosides
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