Isolation and Structure Elucidation of New Pentacyclic Triterpene Acid from the Leaves of Rubus ellipticus

A new pentacyclic triterpene acid, elliptic acid was isolated from the ethanolic extract of the leaves of Rubus ellipticus. On the basis of physical evidences coupled with chemical investigations, the structure of elliptic acid was given as, 3,7, 11-trihydroxy ursolic acid.