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Flavones and isoflavones from the west African Fabaceae Erythrina vogelii |
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| Authors: | Kamdem Waffo Alain F Coombes Philip H Mulholland Dulcie A Nkengfack Augustin E Fomum Zacharias T |
| Institution: | Natural Products Research Group, School of Chemistry, University of KwaZulu-Natal, Howard College Campus, 4041 Durban, South Africa. |
| Abstract: | The CH(2)Cl(2)/MeOH extract of the stem bark of Erythrina vogelii (Fabaceae) from Nigeria has yielded two novel isoflavones, 7,4'-dihydroxy-8-(gamma,gamma-dimethylallyl)-2'zeta-(4'-hydroxyisopropyl)dihydrofurano1',3':5,6]isoflavone (vogelin H) (1) and 7,4'-dihydroxy-8-(2'zeta,3'-dihydroxy-3'-methyl)butyl]-2',2'-dimethyl-3',4'-dehydropyrano1',4':5,6]isoflavone (vogelin I) (2), a novel flavone, 7,4'-dihydroxy-2',2'-dimethyl-3',4'-dehydropyrano1',4':5,6]flavone (vogelin J) (3), and eight known flavonoids. |
| Keywords: | Erythrina vogelii Fabaceae Stem bark Isolation Isoflavones Flavones 7 4′-Dihydroxy-8-(γ γ-dimethylallyl)-2″ξ-(4″-hydroxyisopropyl)dihydrofurano[1″ 3″:5 6]isoflavone (Vogelin H) 7 4′-Dihydroxy-8-[(2?ξ 3?-dihydroxy-3?-methyl)butyl]-2″ 2″-dimethyl-3″ 4″-dehydropyrano[1″ 4″:5 6]isoflavone (Vogelin I) 7 4′-Dihydroxy-2″ 2″-dimethyl-3″ 4″-dehydropyrano[1″ 4″:5 6]flavone (Vogelin J) 6 8-Diprenylgenistein 8-Prenylluteone Warangalone Scandenone Auriculatin 2 3-Dihydroauriculatin Carpachromene |
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