Norabietane diterpenoids and other terpenoids from Salvia recognita

Seven diterpenoids, three of them being new, salvirecognine, salvirecognine, 6 alpha-hydroxy-11,12-dioxo-8,13-abieta-diene, were isolated from the roots of Salvia recognita together with three known triterpenoids. The structures of the known compounds were established by comparing their spectral data to those of authentic samples as well as by TLC comparisons. The structures of the new compounds were deduced by 1D and 2D NMR techniques including APT, DEFT, COSY and HETCOR. (C) 1998 Elsevier Science Ltd. All rights reserved.