*2.12.5. Plectranthus ernstii*

Two pimaranes rel-15(ζ),16-epoxy-7*α*-hydroxypimar-8,14-ene (**118**): rel-15(ζ),16-epoxy-7-oxopimar-8,14-ene (**119**) and a labdane 1*R*,11*S*-dihydroxy-8*R*,13*R*-epoxylabd-14-ene (**120**) were isolated. The three compounds showed activity against *M. tuberculosis* and different strains of *S. aureus* [57].
