Topic
Flavanone
About: Flavanone is a research topic. Over the lifetime, 1965 publications have been published within this topic receiving 54729 citations. The topic is also known as: flavanones.
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TL;DR: The structures of two new isoflavonoids from the combined ethyl acetate/methanolic extracts of the stem bark of Bolusanthus speciosus have been established as 4,7,2' -trihydroxy-4' -methoxyisoflavanol.
Abstract: . The structures of two new isoflavonoids from the combined ethyl acetate/methanolic extracts of the stem bark of Bolusanthus speciosus have been established as 4,7,2' -trihydroxy-4' -methoxyisoflavanol (1) and 5,7,3' ,4' -tetrahydroxy-5' -(2-epoxy-3-methylbutyl)isoflavanone (2). Five other known isoflavonoids, 5,7,3' -trihydroxy-4' -methoxy-5' -γγ; -dimethylallylisoflavanone, 5,7,2' -trihydroxy-4' -methoxy-6,5' -di)(γγ -dimethylallyl)isoflavanone, 5,7,2' ,4'-tetrahydroxy-8,5'2; -di(γγ -dimethylallyl)flavanone, 5,7,2' ,4' -tetrahydroxy-8,3' -di(γγ -dimethylallyl)-isoflavanone, and derrone were also isolated. Compound 2 showed moderate activity against gram positive bacteria and weak activity against gram negative bacteria, while compound 1 was weakly active against both organisms in a TLC bioautography assay.
(Received March 22, 2001; revised August 13 2001)
Bull.Chem.Soc.Ethiop. 2001, 15(2), 131-136
16 citations
16 citations
TL;DR: A new aurone named (2Z)-2-[(4'-hydroxyphenyl) methylene]-6-hydroxy-7-prenyl-3(2H)-benzofurane, two new flavonoids, together with eleven known compounds, were isolated from the seeds of Psoralea corylifolia by spectroscopic and physico-chemical analyses.
16 citations
TL;DR: In this article, the synthesis of pyrano[2,3-c]pyrazole derivatives 4, 5, and 7 starting from (E)-(1, 3-dimethyl-5-hydroxy-4-pyrazolyl)-3-phenyl-2-propen-1-one (2) is reported.
16 citations
TL;DR: The qualitative and quantitative patterns of several flavonoid glucosides in the phloem of shoots and stems of Prunus avium during ageing were determined and increasing levels of prunin and sakuranin were related to advancing age of the branch sections within the crown.
16 citations