Inhibition of DNA topoisomerase I and growth inhibition of human cancer cell lines by an oleanane from Junellia aspera (Verbenaceae)

1. Pungitore, C.R.
2. Padrón, J.M.
3. Leon, L.G.
4. García, C.
5. Ciuffo, G.M.
6. Martin, V.S.
7. Tonn, C.E.