Punicalin

Punicalin is an ellagitannin. It can be found in "Punica granatum" (pomegranate) or in the leaves of "Terminalia catappa", a plant used to treat dermatitis and hepatitis. It is also reported in "Combretum glutinosum", all three species being Myrtales, the two last being Combretaceae.
It is a highly active carbonic anhydrase inhibitor.
Chemistry.
The molecule contains a gallagic acid component linked to a glucose.