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Chemistry in eriocaulaceae
(2008-03-01)
Eriocaulaceae is a pantropical family that comprises about 1100 species distributed in 11 genera. The infrafamilial relationships are still unsatisfactorily resolved, because of the tiny flowers and generalized morphology, ...
Host-guest interactions between xanthones and water: the role of O-H center dot center dot center dot O, C-H center dot center dot center dot O, and pi center dot center dot center dot pi contacts in the channel- and cage-type frameworks
(SPRINGER/PLENUM PUBLISHERSNEW YORK, 2012)
In this article were studied two xanthone derivatives known as 1,5-dihydroxy-8-methoxyxanthone (I) and 1,3,7-trihydroxy-8-methoxyxanthone (II), which show one water molecule into their crystal structures. In xanthone I, ...
Effects of hydroxy-xanthones on dipalmitoylphosphatidylcholine lipid bilayers: A theoretical and experimental study
(Elsevier Ireland, 2017-08)
Xanthones and derivatives are natural active compounds whose interest has been increased due to its several pharmacological effects. In this work, effects of hydroxy-xanthones on the physicochemical properties of ...
Xanthones from Weddellina squamulosa Tul. (Podostemaceae)
(Pergamon-elsevier Science LtdOxfordInglaterra, 2005)
Xanthones and flavonoids from Leiothrix curvifolia and Leiothrix flavescens
(Elsevier B.V., 2001-04-01)
8-Carboxymethyl-1,6-dihydroxy-3,5-dimethoxyxanthone 8-carboxymethyl-1,5,6-trihydroxy-3-methoxyxanthone and 8-carboxy-methyl-1,3,5,6-tetrahydroxyxanthone were isolated from the capitula of Leiothrix curvifolia and Leiothrix ...
One-Step Synthesis of Xanthones Catalyzed by a Highly Efficient Copper-Based Magnetically Recoverable Nanocatalyst
(American Chemical Society, 2014-05)
A versatile and highly efficient strategy to construct a xanthone skeleton via a ligand-free intermolecular catalytic coupling of 2-substituted benzaldehydes and a wide range of phenols has been developed. For this purpose, ...
On the relationships between molecular conformations and intermolecular contacts toward crystal self-assembly of mono-, di-, tri-, and tetra-oxygenated xanthone derivatives
(SPRINGER/PLENUM PUBLISHERS, 2010)
Oxygenated xanthones have been extensively investigated over the years, but there are few reports concerning their crystal structure. Our chemical investigations of Brazilian plants resulted in the isolation of four natural ...
Quantification of Flavonoids, Naphthopyranones and Xanthones in Eriocaulaceae Species by LC-PDA
(2012)
The linearity, stability, accuracy and inter-day precisions of the assay method were evaluated in methanolic aerial-part extracts of Paepalanthus giganteus and Syngontnhus nitens from the Eriocaulaceae family. Their small ...
Increment of Antimycobaterial Activity on Lichexanthone Derivatives
(Bentham Science Publ Ltd, 2013-11-01)
A new dihydropyranexanthone derived from the natural xanthone lichexanthone (1) was synthesised and, together with other 18 derivatives including omega-bromo and omega-aminoalkoxylxanthones (containing methyl, ethyl, propyl, ...
Relationship between electronic structures and antiplasmodial activities of xanthone derivatives: a 2D-QSAR approach
(Springer New York LLC, 2019)
Malaria is an important disease causing many death in several countries of Africa and Asia. In these continents, some plants such as Garcinia cola are used to fight against this disease because they contain xanthone ...