Terpenoids, also known as isoprenoids, are a large and diverse class of naturally occurring organic chemicals derived from five-carbon
isoprene units assembled in a variety of ways. Most are multicyclic structures with oxygen-containing functional groups.
They constitute one of the largest families of plant metabolites and are found in all classes of living things.
Terpenoids play several crucial roles in plants. They are involved in growth and development, and are important for plants'
interactions with their environment, such as attracting pollinators, deterring herbivores, and protecting against pathogens.
From a structural perspective, terpenoids are grouped according to the number of isoprene units in the molecule.
The different groups are listed below: