A new diterpene acid, 3-/3-hydroxy-8,ll,13(14),15-abietatetraen-18-oic acid, along with dehydroabietic acid, three triterpenes, namely, ursolic, oleanolic and crateagolic acids, and the steroidal glycoside sitosteryl 3-d-glucoside, were isolated from leaves of A. tomentosa Mill. All of the compounds were characterized by chemical and spectral methods.Many diterpenoids are known from species of Salvia (Family Labiatae). For example, the diterpene carnosol was found in 5. officinalis (1, 2) and S. triloba (3). Later ferruginol was obtained from 5. officinalis (4). Both carnasol and ferruginol have the 8,11,13-abietatrien skeleton. Salvin, one of the antibacterial diterpenes from 5. officinalis, is 11,12-dihydroxy-8,11,13( 14)-abietatrien-20-oic acid (5). In addition, naphthaquinones, namely tanshinone I and II and cryptotanshinone, were isolated from S. miltiorrhizza (6, 7). Several diterpene quiñones (8,9) and diterpene alcohols (10,11) were obtained from different Salvia species.We report here the isolation and structure determination of a new diterpene acid and several known compounds including three triterpenes, a diterpene acid, and a steroidal glycoside from Salvia tomentosa collected in the Mediterranean section of Turkey. The new acid is of the abietane-type common for species of Pinus (12, 13), Agathis (14) and Picea (15) as well as Salvia (3-5).Although the flavonoids in S. tomentosa were described previously (16), this is the first report of terpenoids from this species.
