Tannins and related compounds. LXXII. Isolation and characterization of mongolicanin (procyanidino-ellagitannin), mongolinin A, acutissimin C and vescalagin carboxylic acid, novel tannins from Quercus mongolica var. grosseserrata.

Abstract

A novel procyanidino-ellagitannin, mongolicanin (1), has been isolated, together with three new tannins, mongolinin A (4), acutissimin C (7) and vescalagin carboxilic acid (8), from the bark of Quercus mongolica var. grosseserrata (Fagaceae), and the structure of these compounds were established on the basis of physicochemical data.