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: In this article, a well-ordered hexagonally arranged mesopores were synthesized by one-pot co-condensation of tetraethoxysilane and aminopropyl-functionalized SBA-15 materials.
46 citations
TL;DR: A new isoflavone, named sophoraflavanone G (I), mp 173-175°C, C25H28O6, and a new is oflavone (II), mp 235-237°C and C20H16O6 were isolated from the root of Sophora moorcroftiana BENTH as discussed by the authors, and the structures of I and II were established to be (2S)-5, 7, 2', 4'-tetrahydroxy-8-lavandulylflavanones and 3-(5
Abstract: A new flavanone, named sophoraflavanone G (I), mp 173-175°C, C25H28O6, and a new isoflavone, named sophoraisoflavone A (II), mp 235-237°C, C20H16O6, were isolated from the root of Sophora moorcroftiana BENTH. ex BAKER (Leguminosae), together with sophoraflavanone B, licoisoflavone B, calycosin, l-maackiain and medicagol. The structures of I and II were established to be (2S)-5, 7, 2', 4'-tetrahydroxy-8-lavandulylflavanone and 3-(5'-hydroxy-2', 2'-dimethyl-2H-benzopyran-8'-yl)-5, 7-dihydroxychromone, respectively, on the basis of chemical and spectral evidence. The revision of the structures of nor-kurarinone and vexibinol is also described.
46 citations
TL;DR: Two new flavanone glucosides were isolated from the branches and leaves of Viscum coloratum NAKAI (Loranthaceae) and showed potent albeit varied degrees of antioxidative activities and the structure-activity relationship is discussed.
Abstract: Two new flavanone glucosides, (2S)-homoeriodictyol 7,4′-di-O-β-D-glucopyranoside (4) and (2R)-eriodictyol 7,4′-di-O-β-D-glucopyranoside (5) were isolated from the branches and leaves of Viscum coloratum (KOMAR) NAKAI (Loranthaceae), along with three known flavanone glucosides: (2S)-homoeriodictyol 7-O-β-D-glucopyranoside (1), (2S)-eriodictyol 7-O-β-D-glucopyranoside (2), and (2S)-naringenin 7-O-β-D-glucopyranoside (3). The structures of these compounds were elucidated using spectroscopic methods. The antioxidant activities of these isolated compounds were evaluated by colorimetric methods based on their scavenging effects on hydroxyl radicals and superoxide anion radicals, respectively. All the compounds showed potent albeit varied degrees of antioxidative activities and the structure–activity relationship is discussed.
46 citations
TL;DR: Three new diterpenoids, excoecarins V1-V3 (1-3) and a new flavanone glycoside (7) were isolated from the fresh stem of Excoecaria agallocha L.
Abstract: Three new diterpenoids, excoecarins V1-V3 (1-3) and a new flavanone glycoside (7) were isolated from the fresh stem of Excoecaria agallocha L. Their structures were elucidated as: 2alpha,3alpha,18-trihydroxy-3beta,20-epoxybeyer-15-ene (1), ent-2,3-secokaur-16-en-2,3-dioic acid (2), ent-3,4-seco-16alpha-hydroxyatis-4(19)-en-3-oic acid (3), and 3,5,7,3',5'-pentahydroxy-2R,3R-flavanonol 3-O-alpha-L-rhamnopyranoside (7) on the basis of spectroscopic data, chemical evidence, and/or X-ray analysis.
46 citations
TL;DR: Four triterpenes and five flavonoids were isolated from the leaves of Bosistoa brasii and identified wing spectroscopic methods and characterized as baurenol and multiflorenol, friedelan-3 β-ol, and D-friedoolean-14-ene-3β,7α-diol.
Abstract: Four triterpenes and five flavonoids were isolated from the leaves of Bosistoa brasii (Rutaceae) and identified wing spectroscopic methods. The triterpenes were characterized as baurenol and multiflorenol (isolated as a mixture), friedelan-3β-ol, and D-friedoolean-14-ene-3β,7α-diol [1]. Four of the flavonoids were identified as kumatakenin (5,4'-dihydroxy-3,7-dimethoxyflavone) [2], 5,7-dihydroxy-3-methoxy-4'-(3-methylbut-2-enyloxy)flavone [3], 5,7-dihydroxy-4'-methoxy-8-(3-methylbut-2-enyl)flavanone [4], and 5,7-dihydroxy-4'-methoxy-8-(2-hydroxy-3-methylbut-3-enyl)flavanone [5]
45 citations