Punicacortein A is an

ellagitannin The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl ...

, a polyphenol compound. It is found in the bark of ''

Punica granatum The pomegranate (''Punica granatum'') is a fruit-bearing deciduous shrub in the family Lythraceae, subfamily Punicoideae, that grows between tall. The pomegranate was originally described throughout the Mediterranean Basin, Mediterranean re ...

'' (pomegranate) and in '' Osbeckia chinensis''.Tannin antioxidants from Osbeckia chinensis. Jeng-De Su, Toshihiko Osawa, Shunro Kawakishi and Mitsuo Namiki, Phytochemistry, Volume 27, Issue 5, 1988, Pages 1315–1319,

References

Pomegranate ellagitannins Heterocyclic compounds with 4 rings Oxygen heterocycles {{aromatic-stub