Jg. Luis et al., TILIFOLIDIONE, A CYCLOHEPTANENAPHTHOQUINONE-TYPE DITERPENOID OF ABIETANIC ORIGIN FROM THE ROOTS OF SALVIA-TILIAEFOLIA, Phytochemistry, 36(1), 1994, pp. 115-117
A new diterpenequinone, which possesses a hitherto unknown cycloheptan
enaphthoquinone skeleton, together with the known compound ferruginol,
was isolated from the roots of Salvia tiliaefolia. The structure of t
he new diterpene was established from its spectral data and by exhaust
ive 1D and 2D NMR experiments.