Terpenoids represent the largest family of natural products (NPs) with dramatically chemical and structural diversity, which makes terpenoids the important compound resources of drug discovery. However, comprehensive understanding on the structure− function features for terpenoid NPs is limited. In this work, we have systematically explored the chemical and biological space of terpenoid NPs, including their distribution, physicochemical properties, scaffold features, and functional applications, by utilizing various cheminformatics and bioinformatics approaches. We have not only confirmed that terpenoid NPs have good drug-likeness and great potential for drug discovery but, more importantly, illuminated the uniqueness of cyclic scaffold diversity in different species (plants, fungi, bacteria, and animals) and the specificity of biological function for the dominant fused-ring scaffolds of terpenoids. The present work supplies a valuable reference for identifying the new structure and unknown function of terpenoid NPs.
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