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Four diterpenoids (1–4), together with four known ones (5–8), were isolated from the ethanolic extract of the whole plant of Gaultheria yunnanensis. Their structures were determined by extensive NMR and MS analysis. All 8 compounds were assayed for inhibitory effects against nitric oxide (NO) and pro-inflammatory cytokines TNF-α and IL-6 release in LPS-induced RAW 246.7 macrophages. 18-Hydroxyferruginol...
Bioassay guided fractionation and chemical investigation of the ethanolic extract of the aerial parts of Dodonaea viscosa Linn. from Egypt, resulted in the isolation and identification of three new compounds, including two new clerodane diterpenoids 1 and 2 and a new myo-inositol derivative 3, along with nine known compounds 4–12. The structures of the isolated compounds were elucidated using 1D and...
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