Results 191 to 200 of about 2,920 (220)
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Tetrahedron, 1999
Abstract The structure and stereochemistry of (2 R ,3 S )-naringenin-(3 α →5)-(2 R )-maesopsin, its isoflavanone analogue, (2 S ,3 R )-dihydrogenistein-(2 α →7)-(2 R )-maesopsin, and the 2S (F-ring) diastereomers of both compounds from the heartwood of Berchemia zeyheri were established by 1 H NMR and CD data.
Riaan Bekker +2 more
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Abstract The structure and stereochemistry of (2 R ,3 S )-naringenin-(3 α →5)-(2 R )-maesopsin, its isoflavanone analogue, (2 S ,3 R )-dihydrogenistein-(2 α →7)-(2 R )-maesopsin, and the 2S (F-ring) diastereomers of both compounds from the heartwood of Berchemia zeyheri were established by 1 H NMR and CD data.
Riaan Bekker +2 more
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A biflavonoid from Garcinia nervosa
Phytochemistry, 1988Abstract A new biflavonoid has been isolated from the leaves of Garcinia nervosa . Its structure I-5, II-5, I-7, II-7, I-3′, I-4′, II-4′-heptahydroxy-[I-3, II-8]-flavanonylflavone was elucidated with the help of chemical and spectral methods.
Vikas Babu +3 more
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Abiesin, a biflavonoid of abies webbiana
Phytochemistry, 1984Abstract Abiesin, a new biflavonoid, has been isolated from the leaves of Abies webbiana and identified as 5,3″,7″- trihydroxy-7,4′,4‴-trimethoxy-(3′,6″)-biflavone.
A. Chatterjee +4 more
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Synthesis of structurally diverse biflavonoids
Tetrahedron, 2018Abstract Synthetic biflavonoids are associated with interesting biological activities, yet they remain poorly explored within drug discovery. Recent years have witnessed a growing interest in synthetic approaches that can provide access to structurally novel biflavonoids so that the biological usefulness of this compound class can be more fully ...
Tze Jing Sum +5 more
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ChemInform Abstract: Biflavonoids and Triflavonoids
ChemInform, 1995AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Journal of the Chemical Society, Perkin Transactions 1, 1994
Arylation of 3-(phenylsulfonyl)chroman-4-one 1 with simple aryllead triacetates affords the corresponding 3-aryl-3-(phenylsulfonyl)chroman-4-one in 64–74% yield. However, no reaction took place with the hindered 2,4,6-trimethoxyphenyllead triacetate 9. Reaction of the 8-triacetoxyplumbylflavane derivative 10 with 4′-methoxy-3-(phenylsulfanyl)flavanone ...
Dervilla M. X. Donnelly +3 more
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Arylation of 3-(phenylsulfonyl)chroman-4-one 1 with simple aryllead triacetates affords the corresponding 3-aryl-3-(phenylsulfonyl)chroman-4-one in 64–74% yield. However, no reaction took place with the hindered 2,4,6-trimethoxyphenyllead triacetate 9. Reaction of the 8-triacetoxyplumbylflavane derivative 10 with 4′-methoxy-3-(phenylsulfanyl)flavanone ...
Dervilla M. X. Donnelly +3 more
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A biflavonoid from Semecarpus anacardium
Phytochemistry, 1983Abstract A new biflavanone, galluflavanone, has been isolated from the alcoholic extract of the nut shells of Semecarpus anacardium .
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Biflavonoids from Selaginella trichoclada
Chemistry of Natural Compounds, 2023P. Yang, L. H. Tan, Y. Xie
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