AUTHOR=Sülsen Valeria P. , Athanassopoulos Constantinos M. , Padrón José M. , Tamura Rodrigo E. TITLE=Editorial: Natural compounds as scaffolds for the discovery of new anti-cancer drugs: Focus on terpenoids and flavonoids JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.984849 DOI=10.3389/fphar.2022.984849 ISSN=1663-9812