Chemistry and Biodiversity 2017-Aug
New Eudesmane Sesquiterpenoids from Salvia plebeia R. Br.
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Three new sesquiterpenoids, salplebeones A - C (1 - 3), were isolated from the ethanol-soluble extract of the aerial part of Salvia plebeia R. Br. Their structures were established by detailed analysis of NMR and MS spectra. Salplebeone A was an eudesmane lactone, while salplebeones B and C were rare eudesmane sesquiterpenoids, containing 12,8-lactam groups. Antiproliferative activities of salplebeones A - C to myeloid leukemia cell lines were evaluated.