From the root bark of Salacia prinoides DC. (Celastraceae), six closely related triterpenes, P, Q, R, S, T and V have been isolated. These have been shown to be 1,3-diketofriedelane derivatives. The structures of these compounds, 1, 10, 39, 33, 11 and 12, have been established on the basis of spectroscopic as well as degradative evidence.