Flavonoids from Lonchocarpus muehlbergianus
The light petroleum extract from the roots of Lonchocarpus muehlbergianus Hassl contained nine flavonoids, including six new ones. These are 2,4-cis-2,4,5,8-tetramethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-4-hydroxy-2,5,8-trimethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4,5,8-trimethoxy-(2,3:6,7)-...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Academia Brasileira de Ciências
2004-01-01
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| Series: | Anais da Academia Brasileira de Ciências |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000400004 |
| _version_ | 1828221957781323776 |
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| author | Magalhães Aderbal F. Tozzi Ana M.G.A. Magalhães Eva G. Blanco Ivani S. Soriano Maria-Del-Pilar C. |
| author_facet | Magalhães Aderbal F. Tozzi Ana M.G.A. Magalhães Eva G. Blanco Ivani S. Soriano Maria-Del-Pilar C. |
| author_sort | Magalhães Aderbal F. |
| collection | DOAJ |
| description | The light petroleum extract from the roots of Lonchocarpus muehlbergianus Hassl contained nine flavonoids, including six new ones. These are 2,4-cis-2,4,5,8-tetramethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-4-hydroxy-2,5,8-trimethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4,5,8-trimethoxy-(2,3:6,7)-fu-ranoflavan; 2,4-cis-2-prenyloxy-4-hydroxy-5,8-dimethoxy-(2,3:6,7)-furanoflavan; 2',5',6'-trimethoxy-9-(1,1-dimethylallyoxy)-[2,3:3,4]-furanochalcone; 5,6-dimethoxy-(2,3:7,8)-furanoflavone, identi-fied by analysis of their spectral data (UV, IR, ¹H and 13C NMR, 2D-NMR, NOE and MS). The natural occurrence of 2,4-dioxygenated flavan derivatives is being reported for the first time. Quantitative analysis of the petrol extract, by using reversed-phase HPLC, showed that the most abundant flavonoid in the extract is 2,4-cis-2,4,5,8- tetramethoxy-(2,3:6,7)-furanoflavan. |
| first_indexed | 2024-04-12T16:48:34Z |
| format | Article |
| id | doaj.art-055e2de6f00c49f3b76952ec457b97b6 |
| institution | Directory Open Access Journal |
| issn | 0001-3765 1678-2690 |
| language | English |
| last_indexed | 2024-04-12T16:48:34Z |
| publishDate | 2004-01-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-055e2de6f00c49f3b76952ec457b97b62022-12-22T03:24:29ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências0001-37651678-26902004-01-01764651661Flavonoids from Lonchocarpus muehlbergianusMagalhães Aderbal F.Tozzi Ana M.G.A.Magalhães Eva G.Blanco Ivani S.Soriano Maria-Del-Pilar C.The light petroleum extract from the roots of Lonchocarpus muehlbergianus Hassl contained nine flavonoids, including six new ones. These are 2,4-cis-2,4,5,8-tetramethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-4-hydroxy-2,5,8-trimethoxy-(2,3:6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4,5,8-trimethoxy-(2,3:6,7)-fu-ranoflavan; 2,4-cis-2-prenyloxy-4-hydroxy-5,8-dimethoxy-(2,3:6,7)-furanoflavan; 2',5',6'-trimethoxy-9-(1,1-dimethylallyoxy)-[2,3:3,4]-furanochalcone; 5,6-dimethoxy-(2,3:7,8)-furanoflavone, identi-fied by analysis of their spectral data (UV, IR, ¹H and 13C NMR, 2D-NMR, NOE and MS). The natural occurrence of 2,4-dioxygenated flavan derivatives is being reported for the first time. Quantitative analysis of the petrol extract, by using reversed-phase HPLC, showed that the most abundant flavonoid in the extract is 2,4-cis-2,4,5,8- tetramethoxy-(2,3:6,7)-furanoflavan.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000400004Lonchocarpus muehlbergianusLeguminosaeflavonoidsflavans |
| spellingShingle | Magalhães Aderbal F. Tozzi Ana M.G.A. Magalhães Eva G. Blanco Ivani S. Soriano Maria-Del-Pilar C. Flavonoids from Lonchocarpus muehlbergianus Anais da Academia Brasileira de Ciências Lonchocarpus muehlbergianus Leguminosae flavonoids flavans |
| title | Flavonoids from Lonchocarpus muehlbergianus |
| title_full | Flavonoids from Lonchocarpus muehlbergianus |
| title_fullStr | Flavonoids from Lonchocarpus muehlbergianus |
| title_full_unstemmed | Flavonoids from Lonchocarpus muehlbergianus |
| title_short | Flavonoids from Lonchocarpus muehlbergianus |
| title_sort | flavonoids from lonchocarpus muehlbergianus |
| topic | Lonchocarpus muehlbergianus Leguminosae flavonoids flavans |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000400004 |
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