Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative
Chromatographic fractionation of the hexane extract from the wood of Ouratea floribunda (Ochnaceae) afforded friedelin (1), friedelanol (2), lupeol (3) and the depside atranorin (4). The structure elucidation of the isolated compounds was performed by spectrometric analysis involving comparison with...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2000-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000200007 |
| _version_ | 1828921419440848896 |
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| author | Carvalho Mário G. de Carvalho Geizi J. A. de Braz-Filho Raimundo |
| author_facet | Carvalho Mário G. de Carvalho Geizi J. A. de Braz-Filho Raimundo |
| author_sort | Carvalho Mário G. de |
| collection | DOAJ |
| description | Chromatographic fractionation of the hexane extract from the wood of Ouratea floribunda (Ochnaceae) afforded friedelin (1), friedelanol (2), lupeol (3) and the depside atranorin (4). The structure elucidation of the isolated compounds was performed by spectrometric analysis involving comparison with literature data. The unambiguous assignments of ¹H and 13C NMR data of atranorin 4 and its acetyl derivative 4a are reported for the first time and involved ¹H-¹H homonuclear (COSY and NOESY) and ¹H-13C heteronuclear (HMQC and HMBC) NMR experiments. |
| first_indexed | 2024-12-13T22:02:17Z |
| format | Article |
| id | doaj.art-d64f3cc155b447898761551848eb852a |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-13T22:02:17Z |
| publishDate | 2000-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-d64f3cc155b447898761551848eb852a2022-12-21T23:29:59ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532000-01-01112143147Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivativeCarvalho Mário G. deCarvalho Geizi J. A. deBraz-Filho RaimundoChromatographic fractionation of the hexane extract from the wood of Ouratea floribunda (Ochnaceae) afforded friedelin (1), friedelanol (2), lupeol (3) and the depside atranorin (4). The structure elucidation of the isolated compounds was performed by spectrometric analysis involving comparison with literature data. The unambiguous assignments of ¹H and 13C NMR data of atranorin 4 and its acetyl derivative 4a are reported for the first time and involved ¹H-¹H homonuclear (COSY and NOESY) and ¹H-13C heteronuclear (HMQC and HMBC) NMR experiments.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000200007Ouratea floribundaOchnaceaeatranorinmonoacetylatranorin |
| spellingShingle | Carvalho Mário G. de Carvalho Geizi J. A. de Braz-Filho Raimundo Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative Journal of the Brazilian Chemical Society Ouratea floribunda Ochnaceae atranorin monoacetylatranorin |
| title | Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative |
| title_full | Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative |
| title_fullStr | Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative |
| title_full_unstemmed | Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative |
| title_short | Chemical constituents from Ouratea floribunda: complete 1H and 13C NMR assignments of atranorin and its new acetyl derivative |
| title_sort | chemical constituents from ouratea floribunda complete 1h and 13c nmr assignments of atranorin and its new acetyl derivative |
| topic | Ouratea floribunda Ochnaceae atranorin monoacetylatranorin |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000200007 |
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