نتایج جستجو برای: cembrane diterpene
تعداد نتایج: 1398 فیلتر نتایج به سال:
An overview of the chemistry and biology of the diterpene natural products known as the furanocembranoids, pseudopteranes, and gersolanes is provided; 85 references are cited.
A newly reErranged 2(3.20)abeotaxane diterpenoid with a unique 6/1016 skeleton was isolated from the bark of the Chillese yew, Taxus mairei. The structure was established as being 7fi,13(M-diacetoxy-2or,5a,10fi-trihydrexy-9keto-2(3 -20)abeotaxane on the basis of 1-D and 2-D N"M data. The relative stereochemistry was defined from the results of a NOESY experiment. This is the first reported isol...
Diterpene resin acids, together with monoterpenes and sesquiterpenes, are the most prominent defence chemicals in conifers. These compounds belong to the large group of structurally diverse terpenoids formed by enzymes known as terpenoid synthases. CYPs (cytochrome P450-dependent mono-oxygenases) can further increase the structural diversity of these terpenoids. While most terpenoids are charac...
In flammability assessment, the terpene effect is usually studied using their total or subgroup content, missing, therefore, information that could be provided by molecules themselves. this study, specific role of terpenes on leaf was sought comparing different levels identification—total, (i.e. mono-, sesqui-, and diterpene), single compound—as well as interactions with fuel moisture content (...
Dendritic cells (DCs) are antigen presenting cells, which can present antigens to T-cells and play an important role in linking innate and adaptive immunity. DC maturation can be induced by many stimuli, including pro-inflammatory cytokines and bacterial products, such as lipopolysaccharides (LPS). Here, we examined the immunomodulatory effects of marine cembrane compounds, (9E,13E)-5-acetoxy-6...
Several phytochemicals were shown to interfere with redox biology in the human system. Moreover, redox biochemistry is crucially involved in the orchestration of immunological cascades. When screening for immunomodulatory compounds, the two interferon gamma- (IFN-γ-) dependent immunometabolic pathways of tryptophan breakdown via indoleamine 2,3-dioxygenase-1 (IDO-1) and neopterin formation by G...
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