14 research outputs found
Manoyloxide Sesterterpenoids from <i>Salvia mirzayanii</i>
Five
new manoyloxide-type sesterterpenes were isolated from aerial parts
of <i>Salvia mirzayanii,</i> a species endemic to Iran.
The planar structures were established by means of 1D and 2D NMR and
HRESIMS. Compounds <b>1</b>–<b>3</b> differed only
in their configurations at C-13 and C-14. Assignment of relative and
absolute configurations was achieved by NOESY experiments and by comparison
of experimental and simulated ECD spectra of possible stereoisomers.
The absolute configurations of <b>4</b> and <b>5</b> were
established in a similar manner