Bicyclo[3.2.1]octane and 6-Oxabicyclo[3.2.2]nonane Type Neolignans from Magnolia denudata.
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چکیده
منابع مشابه
Bicyclo[3.2.1]octane and 6-oxabicyclo[3.2.2]nonane type neolignans from Magnolia denudata.
From the ethyl acetate soluble fraction of twigs of Magnolia denudata (Magnoliaceae), seven new neolignan derivatives, 1-7, were isolated along with eighteen known lignan and neolignan derivatives, 8-25. The structures of the new neolignans were elucidated by means of spectral methods, especially by 1H-NMR and 13C-NMR spectra, and two dimensional NMR methods such as 1H-detected heteronuculear m...
متن کاملMachilin G and four neolignans from young fruits of Magnolia denudata show various degrees of inhibitory activity on nitric oxide (NO) production.
Denudatin A and B, denudadione B, fargesone A and machilin G were isolated from Magnolia denudata. These compounds showed inhibitory effects on nitric oxide (NO) production in the lipopolysaccharide plus interferon-gamma activated-murine macrophage cell line, J774.1. Some but not all of the inhibition of NO production by machilin G, and denudatin A and B was apparently through the decreased exp...
متن کاملAntioxidative and Anticanceric Activities of Magnolia (Magnolia denudata) Flower Petal Extract Fermented by Pediococcus acidilactici KCCM 11614.
In this study, the effects of magnolia (Magnolia (M.) denudata) extract fermentation in increasing the extract's antioxidative and anticancer activities were investigated. Magnolia was fermented by Pediococcus acidilactici KCCM 11614. The total phenolic content was determined by the Folin-Ciocalteu's method and the antioxidative effects by 1,1-diphenyl-2-picrylhydrazy (DPPH) and ferric reducing...
متن کاملTemporal Petal Closure Benefits Reproductive Development of Magnolia denudata (Magnoliaceae) in Early Spring
The Magnoliaceae shows strong phylogenetic niche conservatism, in which temporal petal closure has been extensively reported. However, it is yet elusive whether temporal petal closure is an idle floral character inherited from their ancestors or an adaptive trait to their habitats. Here, we monitored the process of temporal floral closure and re-opening in a thermogenic plant, Magnolia denudata...
متن کاملLignans and neolignans from Stelleropsis antoninae
BACKGROUND AND THE PURPOSE OF THE STUDY Stelleropsis antoninae Pobed. (Family: Thymelaeaceae) grows wildly as an herbaceous plant in Iran. Most of the Thymelaeaceous plants contain lignans and neolignans, which have important pharmacologically properties. In the present study, the isolation and identification of the main lignans and neolignans of S. antoninae, which has not been previously repo...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 2000
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.48.832