guaiane/palina

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Two new guaiane sesquiterpene lactones from the aerial parts of Artemisia vulgaris.

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Two new guaiane sesquiterpene lactones, vulgarolides A and B (1 and 2), were isolated from Artemisia vulgaris aerial parts using various chromatographic separations. The structure elucidation was performed by combination of spectroscopic experiments including 1D and 2D NMR, HR ESI MS, and CD. Their

Guaiane dimers and germacranolide from Artemisia caruifolia.

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One new germacranolide (named caruifolin A) and three new guaiane dimers (caruifolins B-D), together with six known compounds, were isolated from the aerial parts of Artemisia caruifolia. The structures were determined by chemical and spectroscopic methods.

Dehydro-leucodin: a guaiane-type sesquiterpene lactone.

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Dehydro-leucodin [systematic name: (1S,6S,2R)-9,13-dimeth-yl-5-methyl-ene-3-oxatricyclo-[8.3.0.0(2,6)]trideca-9,12-diene-4,11-dione], C(15)H(16)O(3), is a guanolide isolated from Artemisia douglasiana. The fused-ring system contains a seven-membered ring that adopts a chair conformation, a fused

New guaiane sesquiterpenes from Artemisia rupestris and their inhibitory effects on nitric oxide production.

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Phytochemical investigation of the ethanol extract of the aerial parts of Artemisia rupestris resulted in the isolation of three new guaiane sesquiterpenes, (1R,7R,10S)-1-hydroxy-3-oxoguaia-4,11(13)-dien-12-oic acid (1), (1R,7R,10S)-10-hydroxy-3-oxoguaia-4,11(13)-dien-12-oic acid (2), pechueloic

Sesquiterpene lactones and scopoletins from Artemisia scoparia Waldst. & Kit. and their angiotensin I-converting enzyme inhibitory activities.

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Ten compounds, including a new guaiane-type sesquiterpene lactone, were isolated from the aerial parts of Artemisia scoparia. The structure of the new compound was determined to be 5-hydroxyguaia-3(4),11(13),10(14)-trien-6α,12-olide, named scoparanolide. Six known sesquiterpene lactones

Artemlavanins A and B from Artemisia lavandulaefolia and Their Cytotoxicity Against Hepatic Stellate Cell Line LX2

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Two new sesquiterpenoids, artemlavanins A (1) and B (3), together with fifteen known compounds (2 and 4-17) were isolated from the EtOH extract of Artemisia lavandulaefolia. The structures of new compounds were elucidated by extensive spectroscopic analyses (HRESIMS, 1D and 2D NMR) and ECD

Highly oxygenated sesquiterpenes in Artemisia alba Turra.

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Ten new sesquiterpene alcohols of which seven germacranes, a eudesmane, a guaiane and an oplopane were isolated from the aerial parts of Artemisia alba Turra. Their structures and relative stereochemistry were elucidated by spectral methods ((1)H and (13)C NMR, COSY, HSQC, HMBC, NOESY, and MS). In

Sesquiterpene Lactones with COX-2 Inhibition Activity from Artemisia lavandulaefolia.

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Two new sesquiterpene lactones, artelavanolides A (1) and B (2), and four known sesquiterpene lactones (3 - 6) were isolated from the leaves of Artemisia lavandulaefolia. Their structures were elucidated based on the analysis of spectroscopic data (1D, 2D-NMR and HR-ESI-MS). The absolute

Characterization and identification of chemical compositions in the extract of Artemisia rupestris L. by liquid chromatography coupled to quadrupole time-of-flight tandem mass spectrometry.

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Liquid chromatography coupled to negative electrospray ionization (ESI) tandem mass spectrometry (MS/MS) employing a time-of-flight tandem mass spectrometer was used in the structural determination of phenolic compounds and sesquiterpenoids occurring in the extract from Artemisia rupestris L. A

Rupestonic acids B-G, NO inhibitory sesquiterpenoids from Artemisia rupestris.

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Six new guaiane sesquiterpenoids, rupestonic acids B-G (1-6), have been isolated from the whole plants of Artemisia rupestris together with six known compounds (7-12). The structures of the new isolates (1-6) were elucidated on the basis of extensive 1D and 2D NMR analysis, and the absolute

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