diterpenóides com esqueleto cleistantano de vellozia aff. carunculares martius ex seubert (velloziaceae)
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ID: 241017
2001
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Abstract
From the hexane extract of leaves, stem and roots, of Vellozia aff. carunculares, fourteen cleistanthane diterpenoids were detected by HRGC-MS, through the analysis of their fragmentation patterns. Comparison of their MS spectra with those of authentic standards previously isolated from other species of the family Velloziaceae allowed the identification, with a high degree of confidence, of eigth known cleistanthane diterpenoids. Of these, four were isolated and identified from their MS, IR and ¹H and 13C NMR spectra, as the known cleistantha-8,11,13-trien-7-one, cleistantha-8,11,13-trien-3,7-dione, cleistantha-1,8,11,13-tetraen-3,7-dione and the first reported 6-alpha-hydroxy-cleistantha-8,11,13-trien-7-one. The triterpenoid beta-amyrin was also isolated.
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| Authors | ;Silva Gilson Cruz da;Valente Ligia Maria Marino;Patitucci Maria Lucia;Pinto Angelo da Cunha;Menezes Nanuza Luíza de |
| Journal | greece and rome |
| Year | 2001 |
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