A New Pentacyclic Triterpene Isolated from Myroxylon balsamum (syn. Myroxylon peruiferum)

Abstract

The new pentacyclic triterpene, 11α-methoxy-β-amyrin (1), was isolated from Myroxylon balsamum (L.) Harms (syn. Myroxylon peruiferum L.f.). Its structure was established on the basis of IR, MS, 1H NMR, 13C NMR. 2D NMR experiments were also used to establish the structure and the hydrogen and carbon chemical shift assignments of the new triterpene.