Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16
Phytochemical investigation of the leaves and branches of a specimen of Ouratea semiserrata led to the isolation and characterization of ent-16alpha,17-dihydroxykauran-19-oic acid, along with other natural products. This diterpenoid and its derivatives were used to unambiguous ¹H and 13C chemical sh...
| Published in: | Química Nova |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
1998-07-01
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| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000400004&lng=en&tlng=en |
| _version_ | 1856888894684921856 |
|---|---|
| author | Javier Rincón Velandia Mário Geraldo de Carvalho Raimundo Braz-Filho |
| author_facet | Javier Rincón Velandia Mário Geraldo de Carvalho Raimundo Braz-Filho |
| author_sort | Javier Rincón Velandia |
| collection | DOAJ |
| container_title | Química Nova |
| description | Phytochemical investigation of the leaves and branches of a specimen of Ouratea semiserrata led to the isolation and characterization of ent-16alpha,17-dihydroxykauran-19-oic acid, along with other natural products. This diterpenoid and its derivatives were used to unambiguous ¹H and 13C chemical shifts assignments and to indicate some mistake data described in the literature as consequence mainly of the stereochemicals of the chiral carbons C-4 and C-16. The HRMS spectra were also analysed. |
| format | Article |
| id | doaj-art-e4879f9bca4e41428c6f03cdd26c6b87 |
| institution | Directory of Open Access Journals |
| issn | 1678-7064 |
| language | English |
| publishDate | 1998-07-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| spelling | doaj-art-e4879f9bca4e41428c6f03cdd26c6b872025-08-19T20:29:13ZengSociedade Brasileira de QuímicaQuímica Nova1678-70641998-07-0121439740410.1590/S0100-40421998000400004S0100-40421998000400004Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16Javier Rincón Velandia0Mário Geraldo de Carvalho1Raimundo Braz-Filho2Universidade Federal Rural do Rio de JaneiroUniversidade Federal Rural do Rio de JaneiroUniversidade Estadual do Norte FluminensePhytochemical investigation of the leaves and branches of a specimen of Ouratea semiserrata led to the isolation and characterization of ent-16alpha,17-dihydroxykauran-19-oic acid, along with other natural products. This diterpenoid and its derivatives were used to unambiguous ¹H and 13C chemical shifts assignments and to indicate some mistake data described in the literature as consequence mainly of the stereochemicals of the chiral carbons C-4 and C-16. The HRMS spectra were also analysed.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000400004&lng=en&tlng=enOuratea semiserrataOchnaceaeent-16alpha,17-dihydroxykauran-19-oic acid¹H and 13C spectral dataHRMS spectra |
| spellingShingle | Javier Rincón Velandia Mário Geraldo de Carvalho Raimundo Braz-Filho Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 Ouratea semiserrata Ochnaceae ent-16alpha,17-dihydroxykauran-19-oic acid ¹H and 13C spectral data HRMS spectra |
| title | Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 |
| title_full | Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 |
| title_fullStr | Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 |
| title_full_unstemmed | Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 |
| title_short | Ácido ent-16alfa,17-diidroxicauran-19-óico isolado de Ouratea semiserrata e os desafios estereoquímicos dos carbonos quirais C-4 e C-16 |
| title_sort | acido ent 16alfa 17 diidroxicauran 19 oico isolado de ouratea semiserrata e os desafios estereoquimicos dos carbonos quirais c 4 e c 16 |
| topic | Ouratea semiserrata Ochnaceae ent-16alpha,17-dihydroxykauran-19-oic acid ¹H and 13C spectral data HRMS spectra |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000400004&lng=en&tlng=en |
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