Fig. 1
From: Dietary chalcones with chemopreventive and chemotherapeutic potential
Schematic representation of main polyphenol family members. Polyphenols are subdivided into 4 main classes—phenolic acids, flavonoids, stilbenes, and lignans—according to the number of phenol rings they include and the structural elements that bind these rings together [114]. Flavonoids can be further divided into various subclasses of which chalcones, flavonols, flavones, flavanones, anthocyanidins, and isoflavonoids are the most common. The core 1,3-diphenyl-2-propenon chalcone structure is shown