Abstract:
The vast number of compounds based on the three-membered flavan ring and
possessing vitamin P activity requires a specific systematization of flavanoids. Existing
classifications, unfortunately, do not take into account the full diversity of these compounds,
including their biogenesis.
We have proposed a classification of flavonoids with P-vitamin activity that takes into
account their biosynthesis and interconversions. This so-called biosynthetic classification
divides all flavonoids into 11 classes: 1 – chalcones, 2 – flavanones, 3 – flavanols, 4 –
flavones, 5 – isoflavones, 6 – dihydroflavanol, 7 – flavon-3-ols, 8 – flavandiols
(leucoanthocyanidins), 9 – anthocyanidins, 10 – flavan-lignans, 11 – atypical and modified
flavanoids.
