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Flavones, dimerization

Ramirez, I. et al., Cissampeloflavone, a chalcone-flavone dimer from Cissampelos pareira. Phytochemistry, 64, 654, 1421 (Frratum), 2003. [Pg.1064]

Moreira, I.C. et al., A flavone dimer from Ouratea hexasperma. Phytochemistry, 51, 833, 1999. [Pg.1126]

Geiger, H., Stein, W., Mues, R. and Zinsmeister, H. D. Bryoflavone and Heterobryoflavone, TWo New Isoflavone- Flavone Dimers from Bryum capillare. Z. Naturforsch. 42c, 1987, pp 863-7 (name, i3C-NMR)... [Pg.59]

Figure 3. SIMPLE BIFLAVONOIDS (I-3, n-8)-Biflavones, (I-3, II-8)-Flavone-flavonol dimers, (I-3, II-8)-Flavanone-flavone dimers, (I-3, II-8)-Flavone-flavanone dimer, (1-3, 11-8 )-Flavone-flavanonol dimer, (I-3, II-8)-Biflavanones, (1-3, 11-8)-Pyranobiflavones. Figure 3. SIMPLE BIFLAVONOIDS (I-3, n-8)-Biflavones, (I-3, II-8)-Flavone-flavonol dimers, (I-3, II-8)-Flavanone-flavone dimers, (I-3, II-8)-Flavone-flavanone dimer, (1-3, 11-8 )-Flavone-flavanonol dimer, (I-3, II-8)-Biflavanones, (1-3, 11-8)-Pyranobiflavones.
Agathisflavone series contains biflavonoids linked by a (1-6,11-8) bond. The series is further divided into structures with two flavone imits (100-110), two flavonol imits (111) flavanone-flavone dimers (112) and two flavanone units (113-114a). Succedaneaflavone series comprises (1-6, II-6)-biflavones (115-116b) (1-6, II-6)-biflavanones (117-118) and a (I-6,II-6)-benzofuran-naphthopyranobiflavone (119). Afzelone series includes (I-6,II-3)-biflavanone (120). Two flavonoid units linked by a (1-3,11-3) bond were included in the Chamaejasmin series. The subdivision of this series is as follow (1-3,11-3)-biflavones (121) a (I-3,II-3)-flavone-flavanone dimer (122), and (1-3,11-3)-biflavanones that have different stereochemistry (123-144). [Pg.18]

Philonotisflavone series is made by biflavonoids linked by a (1-2, II-8) bond. This series is divided into (I-2, II-8)-brflavones (202-205) a (I-2, II-8)-flavanone-flavone dimer (206) a (I-2, II-8)-flavone-flavanone dimer (207) and a (I-2, II-8 I-8,II-2 )-doubly linked flavone-flavanone dimer (208). [Pg.33]

The Bi-isoflavonoid series is formed by (I-2,II-2)-bi-isoflavanones (270-273) a (I-3 ,II-6)-isoflavone-flavone dimer (274) a (I-3 ,II-8)-isoflavone-flavone dimer (275) (I-2,II-5)-isoflavanone-auronol dimers (276, 277) (1-2,11-7)-isoflavanone-am onol dimers (278, 279). [Pg.47]

The (I-8,II-6)-coiuuarin-flavone dimer (280) and the (I-6,II-8)-comnarin-flavone dimer (281) are shown in the Coumarin-Flavone series. The Bineoflavonoid series include five (I-3,II-3)-bi-4-aryldihydrocoumarins (282-286). [Pg.49]

Furobenzo-y-pyrone (furochromen-4-one) derivatives are shown in the chalcone-flavone and flavone-chalcone series. These series includes (I-P,0,II-7 I-a, II-6)-chalcone-flavone dimers (310,311) (1-6,0,Il-a I-7,II-P)-flavone-chalcone dimers (312-314) and (I-6,0,II-P I-7,II-a)-flavone-chalcone dimers (315). Fm-o[2,3-/]chromanone derivatives comprise a (I-6,II-a I-5,0,II-P)-flavanone-chalcone dimer (316) dihydrofuro[3,2-g]chromanone derivatives comprise (I-7,0,II-P I-6,II-a)-flavanone-dihydrochalcone dimers (317) and furo[2,3-/ ]benzopyran derivatives (I-a,II-8 I-p,0,II-7)-chalcone-flavan dimers (318,319). [Pg.58]

Aristolochia ridicula H.B.K. (leaves) (I-3,II-6)-Biflavones Ridiculuflavone A (145) ridiculuflavone B (146) ridiculuflavone C (149) ridiculuflavone D (147) (I-fi,0,II-7 I-a, II-6)-Chalcone-flavone dimers Ridiculuflavonylchalcone B (310). Used in Brazilian traditional medicine as antiinflammatory, antiasthmatic and abortifacient, as well as an antidote for snakebite, to cure several types of cancer. Machado and Lopes, 2005[159], 2008[160]. [Pg.105]

Gnidia socotrana (Balf. f.) Gilg (leaves and twigs) Coumarin-flavone dimers (1-8,11-6)-Umbelliferyl-apigenin (280) (1-5,11-8)- umbelliferylapigenin (281). Yemenian plant. Applications as molluscicidal agent, arrow and fish poison. Franke et ah, 2002[345]. [Pg.138]

Bryum capillare Hedw. Isoflavone-flavone dimers. Bryoflavone (275) heterobryoflavone (274). Geiger et al., 1987[383]. [Pg.144]

The cupressuflavones (1-8,11-8 biflavonoids) (3) are also a small group of compounds compared to the amentoflavones, and usually co-occur with them (Table 7.6.2). Cupressuflavone and its variously C-4 and C-7 methylated derivatives are prominent constituents of the Araucariaceae and Cupressaceae (125). Curiously they have not yet been found in the Thxodiaceae. All of these compounds carry a 5,7,4 -substitution pattern. One flavanone-flavone dimer, mesuferrone-B (307), and a biflavanone, mesuferrone-A (308), have been described from Mesuaferrea,... [Pg.576]

See other pages where Flavones, dimerization is mentioned: [Pg.194]    [Pg.1029]    [Pg.1035]    [Pg.908]    [Pg.14]    [Pg.19]    [Pg.24]    [Pg.26]    [Pg.30]    [Pg.31]    [Pg.34]    [Pg.35]    [Pg.37]    [Pg.39]    [Pg.41]    [Pg.48]    [Pg.48]    [Pg.50]    [Pg.50]    [Pg.58]    [Pg.104]    [Pg.214]    [Pg.219]    [Pg.946]   
See also in sourсe #XX -- [ Pg.194 ]



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