Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone
The flavone 5-hydroxy-3,6,7,8,4'-pentamethoxyflavone (1) and the triterpenes lupenone, 9,19-cyclolanost-23-ene-3beta,25-diol (2), (24R)-9,19-cyclolanost-25-ene-3beta,24-diol (3) and (24S)-9,19-cyclolanost-25-ene-3beta,24-diol (4) were isolated from the hexane extract of the stem bark of Bombaco...
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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=S0103-50532002000200022 |
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| author | Paula Vanderlúcia F. Barbosa Luiz C. A . Errington William Howarth Oliver W. Cruz Mariluze P. |
| author_facet | Paula Vanderlúcia F. Barbosa Luiz C. A . Errington William Howarth Oliver W. Cruz Mariluze P. |
| author_sort | Paula Vanderlúcia F. |
| collection | DOAJ |
| description | The flavone 5-hydroxy-3,6,7,8,4'-pentamethoxyflavone (1) and the triterpenes lupenone, 9,19-cyclolanost-23-ene-3beta,25-diol (2), (24R)-9,19-cyclolanost-25-ene-3beta,24-diol (3) and (24S)-9,19-cyclolanost-25-ene-3beta,24-diol (4) were isolated from the hexane extract of the stem bark of Bombacopsis glabra (Bombacaceae). The structures were determined by 13C and ¹H NMR (1D and 2D) and mass spectrometry, and by comparison with literature data for triterpenes. The structure of the flavone 1 was unambiguously confirmed by a X-ray diffraction study. The five substances were isolated for the first time from Bombacaceae species. |
| first_indexed | 2024-04-12T03:04:08Z |
| format | Article |
| id | doaj.art-9bc05b9e22a0499dbfb6265c634a2a3f |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-04-12T03:04:08Z |
| publishDate | 2002-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-9bc05b9e22a0499dbfb6265c634a2a3f2022-12-22T03:50:34ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532002-01-01132276280Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavonePaula Vanderlúcia F.Barbosa Luiz C. A .Errington WilliamHowarth Oliver W.Cruz Mariluze P.The flavone 5-hydroxy-3,6,7,8,4'-pentamethoxyflavone (1) and the triterpenes lupenone, 9,19-cyclolanost-23-ene-3beta,25-diol (2), (24R)-9,19-cyclolanost-25-ene-3beta,24-diol (3) and (24S)-9,19-cyclolanost-25-ene-3beta,24-diol (4) were isolated from the hexane extract of the stem bark of Bombacopsis glabra (Bombacaceae). The structures were determined by 13C and ¹H NMR (1D and 2D) and mass spectrometry, and by comparison with literature data for triterpenes. The structure of the flavone 1 was unambiguously confirmed by a X-ray diffraction study. The five substances were isolated for the first time from Bombacaceae species.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200022Bombacopsis glabraBombacaceaetriterpenes5-hydroxy-36784'-pentamethoxyflavoneX-ray diffraction study |
| spellingShingle | Paula Vanderlúcia F. Barbosa Luiz C. A . Errington William Howarth Oliver W. Cruz Mariluze P. Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone Journal of the Brazilian Chemical Society Bombacopsis glabra Bombacaceae triterpenes 5-hydroxy-3 6 7 8 4'-pentamethoxyflavone X-ray diffraction study |
| title | Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone |
| title_full | Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone |
| title_fullStr | Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone |
| title_full_unstemmed | Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone |
| title_short | Chemical Constituents from Bombacopsis glabra (Pasq.) A. Robyns: Complete 1H and 13C NMR Assignments and X Ray Structure of 5-Hydroxy-3,6,7,8,4'-pentamethoxyflavone |
| title_sort | chemical constituents from bombacopsis glabra pasq a robyns complete 1h and 13c nmr assignments and x ray structure of 5 hydroxy 3 6 7 8 4 pentamethoxyflavone |
| topic | Bombacopsis glabra Bombacaceae triterpenes 5-hydroxy-3 6 7 8 4'-pentamethoxyflavone X-ray diffraction study |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200022 |
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