Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
From the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2002-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005 |
| _version_ | 1818420655857598464 |
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| author | Branco Alexsandro Pinto Ângelo C. Ifa Demian R. Braz-Filho Raimundo |
| author_facet | Branco Alexsandro Pinto Ângelo C. Ifa Demian R. Braz-Filho Raimundo |
| author_sort | Branco Alexsandro |
| collection | DOAJ |
| description | From the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane. |
| first_indexed | 2024-12-14T12:57:55Z |
| format | Article |
| id | doaj.art-2737d11960a64902b2ffb51810ed40d2 |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-14T12:57:55Z |
| publishDate | 2002-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-2737d11960a64902b2ffb51810ed40d22022-12-21T23:00:30ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532002-01-01133318323Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)Branco AlexsandroPinto Ângelo C.Ifa Demian R.Braz-Filho RaimundoFrom the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005VelloziaceaeVellozia candidaflavonoidsESI-MS/MS |
| spellingShingle | Branco Alexsandro Pinto Ângelo C. Ifa Demian R. Braz-Filho Raimundo Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) Journal of the Brazilian Chemical Society Velloziaceae Vellozia candida flavonoids ESI-MS/MS |
| title | Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) |
| title_full | Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) |
| title_fullStr | Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) |
| title_full_unstemmed | Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) |
| title_short | Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae) |
| title_sort | two 8c methylated flavonols from the leaves of vellozia candida mikan velloziaceae |
| topic | Velloziaceae Vellozia candida flavonoids ESI-MS/MS |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005 |
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