A. Ulubelen et al., NORDITERPENOIDS AND DITERPENOIDS FROM SALVIA-MULTICAULIS WITH ANTITUBERCULOUS ACTIVITY, Journal of natural products, 60(12), 1997, pp. 1275-1280
From the roots of Salvia multicaulis, four new aromatic norditerpenoid
s, multicaulin (1), 12-demethylmulticauline (2), multiorthoquinone (3)
, and 12-demethylmultiorthoquinone (4), two new abietane diterpenoids,
12-methyl-5-dehydrohorminone (5) and 12-methyl-5-dehydroacetylhormino
ne (6), as well as a new pimarane diterpenoid, salvipimarone (7), were
isolated. Also obtained in this investigation were the known compound
s alpha-amyrin, hinokione, horminone, lupeol, manool, 1-oxoferruginol,
18-oxoferruginol, pisiferal, and sempervirol. The structures of compo
unds 1-7 were established by 1D and 2D NMR techniques and by chemical
methods. The antituberculous activity of 1-7 was tested against Mycoba
cterium tuberculosis strain H37Rv, and all compounds were found to be
significantly active, with 2 and 4-6 being the most potent substances.
Six of these novel compounds were evaluated against a number of addit
ional bacterial cultures.