14 research outputs found

    Manoyloxide sesterterpenoids from Salvia mirzayanii

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    Manoyloxide Sesterterpenoids from <i>Salvia mirzayanii</i>

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    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
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