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Flavones as a Privileged Scaffold in Drug Discovery: Current Developments.
Current Organic Synthesis, 2019BACKGROUND Flavones are one of the main subclasses of flavonoids with diverse pharmacological properties. They have been reported to possess antimalarial, antimicrobial, anti-tuberculosis, anti-allergic, antioxidant, anti-inflammatory activities, among ...
P. K. Boniface, Ferreira Igne Elizabeth
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Flavones from Andrographis viscosula
Phytochemistry, 2002Two new 2'-oxygenated flavones, 5,7,2'-trimethoxyflavone (1). and 5,7,2',4',6'-pentamethoxyflavone (2). were isolated from the whole plant of Andrographis viscosula along with three known flavones, echioidinin (3). 5,2',6'-trihydroxy-7-methoxyflavone (4). and echioidin (5). The structures of these compounds were elucidated on the basis of 1D and 2D NMR
Rao, Y.K. +5 more
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Flavones: A direct synthesis of 6-hydroxy-flavones
Proceedings of the Indian Academy of Sciences - Section A, 19516-Hydroxy-flavones have been synthesised by the Venkataraman oxidation of 2:5-dihydroxy-, 2:5:2′-trihydroxy-, 2:5:4′-trihydroxy chalkones as well as 6:3′-dihydroxy-flavanone by selenium dioxide. Thus the polyhydroxy-chalkones can be oxidised to the corresponding hydroxy-flavones in one step.
G. N. Vyas, N. M. Shah
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Phosphorus, Sulfur, and Silicon and the Related Elements, 1998
Abstract The chlorosulfonation of flavone and 4′-methoxyflavone with chlorosulfonic acid occurs regioselectively in ring B. The chlorosulfonyl flavones were converted into their corresponding sulfonamides and sulfonates by reaction with alkylamines, anilines, isopropyl alcohol and p−chlorophenol.
Ana M.G. Silva +3 more
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Abstract The chlorosulfonation of flavone and 4′-methoxyflavone with chlorosulfonic acid occurs regioselectively in ring B. The chlorosulfonyl flavones were converted into their corresponding sulfonamides and sulfonates by reaction with alkylamines, anilines, isopropyl alcohol and p−chlorophenol.
Ana M.G. Silva +3 more
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HYDROXYMETHYLATION OF FLAVONES
Organic Preparations and Procedures International, 1991(1991). HYDROXYMETHYLATION OF FLAVONES. Organic Preparations and Procedures International: Vol. 23, No. 6, pp. 741-747.
György Litkei +3 more
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1982
Most reports on the identification of known flavonoids in new plant sources as well as those on novel flavonoids naturally deal with the two most abundant classes, the flavones and flavonols. For this chapter we have listed all references to the occurrence of flavone and flavonol aglycones which have appeared from 1975 to 1980, and also include such ...
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Most reports on the identification of known flavonoids in new plant sources as well as those on novel flavonoids naturally deal with the two most abundant classes, the flavones and flavonols. For this chapter we have listed all references to the occurrence of flavone and flavonol aglycones which have appeared from 1975 to 1980, and also include such ...
openaire +1 more source