| | 1 | Author
| JohnL. Ingham, PaulM. Dewick | Requires cookie* | | | Title
| The Structure of Desmocarpin, a Pterocarpan Phytoalexin from Desmodium gangeticum  | | | | Abstract
| Ethyl acetate extracts o f diffusates from the fungus-inoculated leaflets o f Desm odium gangeti cum have been found to contain six isoflavonoid phytoalexins including the isoflavones genistein and 2'-hydroxygenistein, and the isoflavanones dalbergioidin, dip hysolone and kievitone. These known phytoalexins occur together with a new antifungal isoflavonoid (desm ocarpin) for which the structure (—)-(6a/?; 1 la/?)-l,9-dihydroxy-3-m ethoxypterocarpan is proposed. | | | |
Reference
| Z. Naturforsch. 39c, 531 (1984); received February 27 1984 | | | |
Published
| 1984 | | | |
Keywords
| Leguminosae, Papilionoideae, Desmodium, Isoflavonoids, Phytoalexins | | | |
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| default:Reihe_C/39/ZNC-1984-39c-0531.pdf | | | | Identifier
| ZNC-1984-39c-0531 | | | | Volume
| 39 | |
| 2 | Author
| JohnL. Ingham, SatoshiT. Ah, O. Rn | Requires cookie* | | | Title
| Fungitoxic Isoflavones from Lupinus albus and other Lupinus Species | | | | Abstract
| The constitutive isoflavones genistein, 2'-hydroxygenistein, wighteone and luteone have been isolated in varying amounts from methanolic leaf washings of eight species belonging to the legume genus Lupinus. These four compounds likewise occur in the flower buds, stems, roots and im mature pods o f L. albus, and in stems and roots o f L. angustifolius and L. mutabilis. A m inor isoflavone present in L. albus and L. luteus leaf washings has been identified by chemical and spectroscopic procedures as 5,7,4'-trihydroxy-3-methoxy-6-(3,3-dimethylallyl)isoflavone (lupiso-flavone). Apart from genistein, 2'-hydroxygenistein, wighteone and luteone, the roots of L. albus also contain alpinumisoflavone, licoisoflavone B and 6,3'-di-(3,3-dimethylallyl)genistein (lupalbi-genin). | | | |
Reference
| Z. Naturforsch. 38c, 194—200 (1983); received N ovem ber 3 1982 | | | |
Published
| 1983 | | | |
Keywords
| Leguminosae, Papilionoideae, Lupinus, Lupins, Isoflavonoids, Isoflavones, Phenolic Compounds, Antifungal Activity | | | |
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| default:Reihe_C/38/ZNC-1983-38c-0194.pdf | | | | Identifier
| ZNC-1983-38c-0194 | | | | Volume
| 38 | |
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