Chemical examination of Terminalia species: part XII - Isolation and structure determination of arjunic acid, a new trihydroxytriterpene carboxylic acid from Terminalia arjuna bark. - Row,L.R.; Murty,P.S.; Subbarao,G.SR.; Sastry,C.SP.; Rao,K.VJ. (Indian J Chem, 1970)