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. 2020 Dec 16;25(24):5971. doi: 10.3390/molecules25245971

Table 1.

The basic structure of flavonoid, its main subclasses, and the majority of proanthocyanidins (PAs).

Compound Basic Structure
Flavonoid graphic file with name molecules-25-05971-i001.jpg
Flavonol graphic file with name molecules-25-05971-i002.jpg
Flavone graphic file with name molecules-25-05971-i003.jpg
Flavan-3-ol graphic file with name molecules-25-05971-i004.jpg
Anthocyanidin graphic file with name molecules-25-05971-i005.jpg
Flavanone graphic file with name molecules-25-05971-i006.jpg
Isoflavone graphic file with name molecules-25-05971-i007.jpg
(+)-Catechin graphic file with name molecules-25-05971-i008.jpg
(−)-Epicatechin graphic file with name molecules-25-05971-i009.jpg
Proanthocyanidin A1 graphic file with name molecules-25-05971-i010.jpg
Proanthocyanidin A2 graphic file with name molecules-25-05971-i011.jpg
Proanthocyanidin B1 graphic file with name molecules-25-05971-i012.jpg
Proanthocyanidin B2 graphic file with name molecules-25-05971-i013.jpg
Proanthocyanidin B3 graphic file with name molecules-25-05971-i014.jpg
Proanthocyanidin B4 graphic file with name molecules-25-05971-i015.jpg
Proanthocyanidin B5 graphic file with name molecules-25-05971-i016.jpg
Proanthocyanidin B6 graphic file with name molecules-25-05971-i017.jpg
Proanthocyanidin B7 graphic file with name molecules-25-05971-i018.jpg
Proanthocyanidin B8 graphic file with name molecules-25-05971-i019.jpg