np6b00605_si_001.pdf (4.63 MB)
neo-Clerodane Diterpenoids and Other Constituents of Salvia filipes
journal contribution
posted on 2016-09-28, 17:24 authored by Emma Maldonado, Leonel Galicia, Ma. Isabel Chávez, Simón Hernández-OrtegaA series of neo-clerodane-type
diterpenoids were
isolated from the aerial parts of Salvia filipes,
including the new compounds 4-epi-polystachyne A
(1), salvifilines A (3), C (7), and D (8), and salvifiline B, which was isolated
as the 15-O-methyl derivatives 4/5. In addition, the five known diterpenoids (2, 9–12), together with ursolic,
oleanolic, and betulinic acids, and the flavone eupatorin were also
isolated. The structures were determined by analysis of their spectroscopic
data, mainly 1D and 2D NMR. The structure of salvifiline D was confirmed
by X-ray analysis. The cytotoxic activities of the diterpenoids were
evaluated, but all were inactive against a panel of six human cancer
cell lines.