Isolation and identification of two new diterpenoid from Rubus corchorifolius L.f

To study the constituents of Rubus corchorifolius L.f, the constituents were separated by using various chromatographies and the structures were identified on the basis of chemical and spectral analysis. Two compounds were isolated from Rubus corchorifolius L.f. Their structures were identified as ent-kauran-3β,16β,17,19-tetrol (1), ent-2-carbonyl-16β-hydroxy-kauran-17-β-D-glucoside (2). Compounds 1 and 2 are new compounds.