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Title: | Structural determination of 3beta-stearyloxy-urs-12-ene from Maytenus salicifolia by 1D and 2D NMR and quantitative 13C NMR spectroscopy. |
Authors: | Miranda, Roqueline Rodrigues Silva de Silva, Gracia Divina de Fátima Duarte, Lucienir Pains Fortes, Isabel Cristina Pereira Vieira Filho, Sidney Augusto |
Keywords: | Celastraceae |
Issue Date: | 2006 |
Citation: | MIRANDA, R. R. S. et al. Structural determination of 3beta-stearyloxy-urs-12-ene from Maytenus salicifolia by 1D and 2D NMR and quantitative 13C NMR spectroscopy. Magnetic Resonance in Chemistry, v. 44, p. 127-131, 2006. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/mrc.1734/abstract>. Acesso em: 20 jan. 2017. |
Abstract: | Six pentacyclic triterpenoids, 3b-stearyloxy-urs-12-ene (1), friedelin (2), 3b-friedelinol (3), a-amyrin (4), b-amyrin (5), and lupeol (6), have been isolated from the hexane extract of Maytenus salicifolia Reissek (Celastraceae) leaves. The molecular and structural formula as well as the stereochemistry of a new pentacyclic triterpene (1) were determined using data obtained from 1H and 13C NMR spectra, DEPT135 and by 2D HSQC, HMBC, COSY and NOESY experiments. The molecular formula C48H84O2 was established using quantitative 13C NMR, and the molecular weight (692 Da) was confirmed by elemental analysis and mass spectrometry (GC-MS). |
URI: | http://www.repositorio.ufop.br/handle/123456789/7635 |
metadata.dc.identifier.uri2: | http://onlinelibrary.wiley.com/doi/10.1002/mrc.1734/abstract |
metadata.dc.identifier.doi: | https://doi.org/10.1002/mrc.1734 |
ISSN: | 1097-458X |
Appears in Collections: | DEFAR - Artigos publicados em periódicos |
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ARTIGO_StructuralDeterminationStearyloxy.pdf Restricted Access | 121,1 kB | Adobe PDF | View/Open |
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