Nine new triterpenes were isolated from Mayternus amazonica. Their structures were determined by means of 1H and 13C NMR spectroscopic studies, including 1H-13C heteronuclear correlation (HETCOR), and long range correlation with inverse detection (HMBC). Some of them showed cytotoxic activity.
Nota bibliográficaFunding Information:
GobiemoA ut6nomod e Canarias( projectC AC246/125/96a)n d ITC. H.C. thanks the Agencia Espaftolad e Cooperaci6nIb eroamericanfao r a grant.B IOMAR S.A. (Dr. D. Gr/lvalosa ndDr. I. Raymundo)c arried out the antitumora nd the aldoser eductasea ssays.W e thank Prof. L Ruiz for gatheringo f the plant.